68 results match your criteria 3D printing in medicine[Journal]


A design process for a 3D printed patient-specific applicator for HDR brachytherapy of the orbit.

3D Print Med 2020 Jun 29;6(1):15. Epub 2020 Jun 29.

Department of Radiation Oncology, Duke University Medical Center, Durham, NC, USA.

Background: This report describes a process for designing a 3D printed patient-specific applicator for HDR brachytherapy of the orbit.

Case Presentation: A 34-year-old man with recurrent melanoma of the orbit was referred for consideration of re-irradiation. An applicator for HDR brachytherapy was designed based on the computed tomography (CT) of patient anatomy. Read More

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http://dx.doi.org/10.1186/s41205-020-00068-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7322888PMC

A retrospective descriptive study of cranioplasty failure rates and contributing factors in novel 3D printed calcium phosphate implants compared to traditional materials.

3D Print Med 2020 Jun 17;6(1):14. Epub 2020 Jun 17.

Department of Bioinformatics and Computational Biology, University of Minnesota, 101 Pleasant Street Southeast, Minneapolis, MN, 55455, USA.

Background: Failure rates with cranioplasty procedures have driven efforts to improve graft material and reduce reoperation. One promising allograft source is a 3D-printed titanium mesh with calcium phosphate filler. This study evaluated failure rates and pertinent characteristics of these novel 3D-grafts compared to traditional materials. Read More

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http://dx.doi.org/10.1186/s41205-020-00066-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7298748PMC

Radiological Society of North America (RSNA) 3D Printing Special Interest Group (SIG) clinical situations for which 3D printing is considered an appropriate representation or extension of data contained in a medical imaging examination: abdominal, hepatobiliary, and gastrointestinal conditions.

3D Print Med 2020 Jun 8;6(1):13. Epub 2020 Jun 8.

Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada.

Background: Medical 3D printing has demonstrated value in anatomic models for abdominal, hepatobiliary, and gastrointestinal conditions. A writing group composed of the Radiological Society of North America (RSNA) Special Interest Group on 3D Printing (SIG) provides appropriateness criteria for abdominal, hepatobiliary, and gastrointestinal 3D printing indications.

Methods: A literature search was conducted to identify all relevant articles using 3D printing technology associated with a number of abdominal pathologic processes. Read More

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http://dx.doi.org/10.1186/s41205-020-00065-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7278118PMC

Development of a dynamic Chest Wall and operating table simulator to enhance congenital heart surgery simulation.

3D Print Med 2020 Jun 1;6(1):12. Epub 2020 Jun 1.

Division of Cardiology, Department of Paediatrics and Division of Cardiovascular Surgery, Department of Surgery, Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G1X8, Canada.

Background: The Hands-On Surgical Training in Congenital Heart Surgery (HOST-CHS) program using 3D printed heart models has received positive feedback from attendees. However, improvements were necessary in the simulator set up to replicate the ergonomics experienced in the operating room. This paper illustrates the development of a dynamic chest wall and operating table simulator to enhance the simulation experience. Read More

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http://dx.doi.org/10.1186/s41205-020-00067-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7268747PMC

COVID-19 and the role of 3D printing in medicine.

3D Print Med 2020 Apr 27;6(1):11. Epub 2020 Apr 27.

Department of Radiology, University of Ottawa School of Medicine, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada.

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http://dx.doi.org/10.1186/s41205-020-00064-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7183817PMC

Understanding the relationship between slicing and measured fill density in material extrusion 3D printing towards precision porosity constructs for biomedical and pharmaceutical applications.

Authors:
Prashanth Ravi

3D Print Med 2020 Apr 25;6(1):10. Epub 2020 Apr 25.

, Cincinnati, OH, USA.

Background: Fill density is a critical parameter affecting the functional performance of 3D printed porous constructs in the biomedical and pharmaceutical domain. Numerous studies have reported the impact of fill density on the mechanical properties, diffusion characteristics and content release rates of constructs. However, due to the way in which slicing toolpath calculations are performed, there is substantial deviation between the measured and slicing fill density for relatively small sized constructs printed at low fill densities (high porosities). Read More

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http://dx.doi.org/10.1186/s41205-020-00063-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7183729PMC

Identifying a commercially-available 3D printing process that minimizes model distortion after annealing and autoclaving and the effect of steam sterilization on mechanical strength.

3D Print Med 2020 Apr 15;6(1). Epub 2020 Apr 15.

Department of Orthopaedic Surgery, University of California, San Francisco, CA, USA.

Background: Fused deposition modeling 3D printing is used in medicine for diverse purposes such as creating patient-specific anatomical models and surgical instruments. For use in the sterile surgical field, it is necessary to understand the mechanical behavior of these prints across 3D printing materials and after autoclaving. It has been previously understood that steam sterilization weakens polylactic acid, however, annealing heat treatment of polylactic acid increases its crystallinity and mechanical strength. Read More

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http://dx.doi.org/10.1186/s41205-020-00062-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7161250PMC

Low-cost FDM 3D-printed modular electrospray/electrospinning setup for biomedical applications.

3D Print Med 2020 Apr 14;6(1). Epub 2020 Apr 14.

School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, UK.

Here, we report on the inexpensive fabrication of an electrospray/electrospinning setup by fused deposition modelling (FDM) 3D printing and provide the files and parameters needed to print this versatile device. Both electrospray and electrospinning technologies are widely used for pharmaceutical, healthcare and bioengineering applications. The setup was designed to be modular, thus its parts can be exchanged easily. Read More

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http://dx.doi.org/10.1186/s41205-020-00060-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7333274PMC

A review of the manufacturing process and infection rate of 3D-printed models and guides sterilized by hydrogen peroxide plasma and utilized intra-operatively.

3D Print Med 2020 Mar 30;6(1). Epub 2020 Mar 30.

Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, Hong Kong.

3D printing in the context of medical application can allow for visualization of patient-specific anatomy to facilitate surgical planning and execution. Intra-operative usage of models and guides allows for real time feedback but ensuring sterility is essential to prevent infection. The additive manufacturing process restricts options for sterilisation owing to temperature sensitivity of thermoplastics utilised for fabrication. Read More

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http://dx.doi.org/10.1186/s41205-020-00061-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7106677PMC

Non-contact visual control of personalized hand prostheses/exoskeletons by tracking using augmented reality glasses.

3D Print Med 2020 Feb 24;6(1). Epub 2020 Feb 24.

Laboratory of NeuroScience, Division of Medical Engineering, Department of Electrical Engineering, Medical Engineering and Computer Science, Offenburg University, Badstr. 24, D-77652, Offenburg, Germany.

A new concept for robust non-invasive optical activation of motorized hand prostheses by simple and non-contact commands is presented. In addition, a novel approach for aiding hand amputees is shown, outlining significant progress in thinking worth testing. In this, personalized 3D-printed artificial flexible hands are combined with commercially available motorized exoskeletons, as they are used e. Read More

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http://dx.doi.org/10.1186/s41205-020-00059-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7041263PMC
February 2020

Imaging properties of 3D printed breast phantoms for lesion localization and Core needle biopsy training.

3D Print Med 2020 Feb 18;6(1). Epub 2020 Feb 18.

Department of Radiology, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH, 45267, USA.

Background: Breast cancer is the most commonly diagnosed malignancy in females and frequently requires core needle biopsy (CNB) to guide management. Adequate training resources for CNB suffer tremendous limitations in reusability, accurate simulation of breast tissue, and cost. The relatively recent advent of 3D printing offers an alternative for the development of breast phantoms for training purposes. Read More

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http://dx.doi.org/10.1186/s41205-020-00058-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7027021PMC
February 2020

3D printed CT-based abdominal structure mannequin for enabling research.

3D Print Med 2020 Feb 5;6(1). Epub 2020 Feb 5.

Joint Department of Medical Imaging, University Health Network, Toronto, Ontario, Canada.

An anthropomorphic phantom is a radiologically accurate, tissue realistic model of the human body that can be used for research into innovative imaging and interventional techniques, education simulation and calibration of medical imaging equipment. Currently available CT phantoms are appropriate tools for calibration of medical imaging equipment but have major disadvantages for research and educational simulation. They are expensive, lacking the realistic appearance and characteristics of anatomical organs when visualized during X-ray based image scanning. Read More

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http://dx.doi.org/10.1186/s41205-020-0056-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7003364PMC
February 2020

Simulation of semilunar valve function: computer-aided design, 3D printing and flow assessment with MR.

3D Print Med 2020 Feb 3;6(1). Epub 2020 Feb 3.

Department of Diagnostic Imaging and Division of Cardiology, Department of Paediatrics Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, M5G1X8, Canada.

Background: The structure of the valve leaflets and sinuses are crucial in supporting the proper function of the semilunar valve and ensuring leaflet durability. Therefore, an enhanced understanding of the structural characteristics of the semilunar valves is fundamental to the evaluation and staging of semilunar valve pathology, as well as the development of prosthetic or bioprosthetic valves. This paper illustrates the process of combining computer-aided design (CAD), 3D printing and flow assessment with 4-dimensional flow magnetic resonance imaging (MRI) to provide detailed assessment of the structural and hemodynamic characteristics of the normal semilunar valve. Read More

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http://dx.doi.org/10.1186/s41205-020-0057-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6998846PMC
February 2020

Custom-made 3D printed subperiosteal titanium implants for the prosthetic restoration of the atrophic posterior mandible of elderly patients: a case series.

3D Print Med 2020 Jan 8;6(1). Epub 2020 Jan 8.

Department of Prevention and Communal Dentistry, Sechenov First Moscow State Medical University, 119991, Moscow, Russia.

Purpose: To present the application of custom-made 3D-printed subperiosteal implants for fixed prosthetic restoration of the atrophic posterior mandible of elderly patients.

Methods: Between January 2017 and June 2018, all partially edentulous patients aged over 65 years, with two or more missing teeth in the posterior atrophic mandible, and who did not want to undergo bone regenerative procedures, were included in this study. These patients were rehabilitated with custom-made subperiosteal implants, designed from cone beam computed tomography (CBCT) and fabricated in titanium by means of direct metal laser sintering (DMLS). Read More

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http://dx.doi.org/10.1186/s41205-019-0055-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6950914PMC
January 2020

Creating patient-specific anatomical models for 3D printing and AR/VR: a supplement for the 2018 Radiological Society of North America (RSNA) hands-on course.

3D Print Med 2019 Dec 30;5(1):17. Epub 2019 Dec 30.

Department of Radiology, Mayo Clinic, Rochester, MN, USA.

Advanced visualization of medical image data in the form of three-dimensional (3D) printing continues to expand in clinical settings and many hospitals have started to adapt 3D technologies to aid in patient care. It is imperative that radiologists and other medical professionals understand the multi-step process of converting medical imaging data to digital files. To educate health care professionals about the steps required to prepare DICOM data for 3D printing anatomical models, hands-on courses have been delivered at the Radiological Society of North America (RSNA) annual meeting since 2014. Read More

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http://dx.doi.org/10.1186/s41205-019-0054-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6937827PMC
December 2019

3D printed PLA Army-Navy retractors when used as linear retractors yield clinically acceptable tolerances.

3D Print Med 2019 Nov 21;5(1):16. Epub 2019 Nov 21.

Department of Orthopaedic Surgery, University of California, San Francisco, CA, USA.

Background: Modern low-cost 3D printing technologies offer the promise of access to surgical tools in resource scarce areas, however optimal designs for manufacturing have not yet been established. We explore how the optimization of 3D printing parameters when manufacturing polylactic acid filament based Army-Navy retractors vastly increases the strength of retractors, and investigate sources of variability in retractor strength, material cost, printing time, and parameter limitations.

Methods: Standard retractors were printed from various polylactic acid filament spools intra-manufacturer and inter-manufacturer to measure variability in retractor strength. Read More

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http://dx.doi.org/10.1186/s41205-019-0053-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6873412PMC
November 2019

Comparative analysis of current 3D printed acetabular titanium implants.

3D Print Med 2019 Nov 6;5(1):15. Epub 2019 Nov 6.

Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, HA7 4LP, UK.

Background: The design freedom allowed by three-dimensional (3D) printing enables the production of acetabular off-the-shelf cups with complex porous structures. The only studies on these designs are limited to clinical outcomes. Our aim was to analyse and compare the designs of different 3D printed cups from multiple manufacturers (Delta TT, Trident II Tritanium and Mpact 3D Metal). Read More

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http://dx.doi.org/10.1186/s41205-019-0052-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6836391PMC
November 2019

Customized tracheal design using 3D printing of a polymer hydrogel: influence of UV laser cross-linking on mechanical properties.

3D Print Med 2019 Aug 2;5(1):12. Epub 2019 Aug 2.

i3N/CENIMAT, Department of Materials Science, Lisbon, Portugal.

Background: The use of 3D printing of hydrogels as a cell support in bio-printing of cartilage, organs and tissue has attracted much research interest. For cartilage applications, hydrogels as soft materials must show some degree of rigidity, which can be achieved by photo- or chemical polymerization. In this work, we combined chemical and UV laser polymeric cross-linkage to control the mechanical properties of 3D printed hydrogel blends. Read More

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http://dx.doi.org/10.1186/s41205-019-0049-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743139PMC
August 2019
1 Read

Comparative assessment of anatomical details of thoracic limb bones of a horse to that of models produced via scanning and 3D printing.

3D Print Med 2019 Aug 2;5(1):13. Epub 2019 Aug 2.

Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques, 77, ZC, São Paulo, SP, 05508-270, Brazil.

Background: Three-dimensional (3D) scanning and printing for the production of models is an innovative tool that can be used in veterinary anatomy practical classes. Ease of access to this teaching material can be an important aspect of learning the anatomy of domestic animals. In this study, a scanner was used to capture 3D images and a 3D printer that performs die-cast printing was used to produce skeletal models of the thoracic limb of a horse. Read More

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http://dx.doi.org/10.1186/s41205-019-0050-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743042PMC
August 2019
1 Read

Advanced 3D printed model of middle cerebral artery aneurysms for neurosurgery simulation.

3D Print Med 2019 Aug 1;5(1):11. Epub 2019 Aug 1.

Monash Institute of Medical Engineering, Monash University, Clayton, VIC, Australia.

Background: Neurosurgical residents are finding it more difficult to obtain experience as the primary operator in aneurysm surgery. The present study aimed to replicate patient-derived cranial anatomy, pathology and human tissue properties relevant to cerebral aneurysm intervention through 3D printing and 3D print-driven casting techniques. The final simulator was designed to provide accurate simulation of a human head with a middle cerebral artery (MCA) aneurysm. Read More

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http://dx.doi.org/10.1186/s41205-019-0048-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743137PMC
August 2019
2 Reads

Novel design and development of a 3D-printed conformal superficial brachytherapy device for the treatment of non-melanoma skin cancer and keloids.

3D Print Med 2019 Jul 22;5(1):10. Epub 2019 Jul 22.

Department of Radiation Oncology, University of Minnesota Medical School, Minneapolis, MN, USA.

Background: Skin tumors are the most predominant form of cancer in the United States. Radiation therapy, particularly high dose-rate (HDR) brachytherapy, provides an effective form of cancer control when surgery is not possible or when surgical margins are incomplete. The treatment of superficial skin cancers on irregular surfaces, such as the nose, lips or ears, present challenges for treatment. Read More

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http://dx.doi.org/10.1186/s41205-019-0045-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743259PMC
July 2019
5 Reads

A digital workflow for modeling of custom dental implants.

Authors:
Andrejus Surovas

3D Print Med 2019 Jun 6;5(1). Epub 2019 Jun 6.

Private practice, "Dantu Implantacijos Klinika", Kalnieciu 100, LT50184, Kaunas, Lithuania.

Modern dental treatment with standard screw-type implants leave some cases unaddressed in patients with extreme jaw bone resorption. Custom-made subperiosteal dental implant could be an alternative treatment modality to sinus lift, nerve lateralization or zygomatic implant techniques. Subperiosteal dental implants were utilized for many years to treat such patients. Read More

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http://dx.doi.org/10.1186/s41205-019-0046-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743136PMC
June 2019
4 Reads

MRI-driven design of customised 3D printed gynaecological brachytherapy applicators with curved needle channels.

3D Print Med 2019 May 16;5(1). Epub 2019 May 16.

BioMechanical Engineering, Delft University of Technology, Delft, The Netherlands.

Background: Brachytherapy involves placement of radioactive sources inside or near the tumour. For gynaecological cancer, recent developments, including 3D imaging and image-guided adaptive brachytherapy, have improved treatment quality and outcomes. However, for large or complex tumours, target coverage and local control with commercially available applicators remain suboptimal. Read More

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http://dx.doi.org/10.1186/s41205-019-0047-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743135PMC
May 2019
2 Reads

Assessment of body-powered 3D printed partial finger prostheses: a case study.

3D Print Med 2019 May 2;5(1). Epub 2019 May 2.

Department of Biomechanics, University of Nebraska at Omaha, 6001 Dodge Street Omaha, Nebraska, NE, 68182, USA.

Background: Traditional prosthetic fabrication relies heavily on plaster casting and 3D models for the accurate production of prosthetics to allow patients to begin rehabilitation and participate in daily activities. Recent technological advancements allow for the use of 2D photographs to fabricate individualized prosthetics based on patient anthropometrics. Additive manufacturing (i. Read More

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http://dx.doi.org/10.1186/s41205-019-0044-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743133PMC
May 2019
9 Reads

Methods for verification of 3D printed anatomic model accuracy using cardiac models as an example.

3D Print Med 2019 Mar 29;5(1). Epub 2019 Mar 29.

VA Puget Sound Health Care System, Seattle, WA, USA.

Background: Medical 3D printing has brought the manufacturing world closer to the patient's bedside than ever before. This requires hospitals and their personnel to update their quality assurance program to more appropriately accommodate the 3D printing fabrication process and the challenges that come along with it.

Results: In this paper, we explored different methods for verifying the accuracy of a 3D printed anatomical model. Read More

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http://dx.doi.org/10.1186/s41205-019-0043-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743141PMC
March 2019
3 Reads

Analysis of biomechanical behavior of 3D printed mandibular graft with porous scaffold structure designed by topological optimization.

3D Print Med 2019 Mar 14;5(1). Epub 2019 Mar 14.

Department of Maxillofacial Surgery, Case Western Reserve University School of Dental Medicine, Cleveland, OH, 44106, USA.

Background: Our long-term goal is to design and manufacture a customized graft with porous scaffold structure for repairing large mandibular defects using topological optimization and 3D printing technology. The purpose of this study is to characterize the mechanical behavior of 3D printed anisotropic scaffolds as bone analogs by fused deposition modeling (FDM).

Methods: Cone beam computed tomography (CBCT) images were used to reconstruct a 3D mandible and finite element models. Read More

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http://dx.doi.org/10.1186/s41205-019-0042-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743138PMC
March 2019
14 Reads

Patient-specific 3D printed and augmented reality kidney and prostate cancer models: impact on patient education.

3D Print Med 2019 Feb 19;5(1). Epub 2019 Feb 19.

Center for Advanced Imaging Innovation and Research (CAI2R) and Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, NYU Langone Health, NYU School of Medicine, 660 First Avenue, Fourth Floor, New York, NY, 10016, USA.

Background: Patient-specific 3D models are being used increasingly in medicine for many applications including surgical planning, procedure rehearsal, trainee education, and patient education. To date, experiences on the use of 3D models to facilitate patient understanding of their disease and surgical plan are limited. The purpose of this study was to investigate in the context of renal and prostate cancer the impact of using 3D printed and augmented reality models for patient education. Read More

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http://dx.doi.org/10.1186/s41205-019-0041-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743040PMC
February 2019
8 Reads

Dose calibration of Gafchromic EBT3 film for Ir-192 brachytherapy source using 3D-printed PLA and ABS plastics.

3D Print Med 2019 Feb 6;5(1). Epub 2019 Feb 6.

University of Minnesota Medical School, 420 Delaware St SE, Minneapolis, MN 55414, USA.

3D printing technology has allowed the creation of custom applicators for high dose rate (HDR) brachytherapy, especially for complex anatomy. With conformal therapy comes the need for advanced dosimetric verification. It is important to demonstrate how dose to 3D printed materials can be related to dose to water. Read More

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http://dx.doi.org/10.1186/s41205-019-0040-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6676362PMC
February 2019
2 Reads

Low cost additive manufacturing of microneedle masters.

3D Print Med 2019 Feb 4;5(1). Epub 2019 Feb 4.

Merck & Co., Inc, Kenilworth, NJ, USA.

Purpose: Microneedle patches are arrays of tiny needles that painlessly pierce the skin to deliver medication into the body. Biocompatible microneedles are usually fabricated via molding of a master structure. Microfabrication techniques used for fabricating these master structures are costly, time intensive, and require extensive expertise to control the structure's geometry of the structure, despite evidence that microneedle geometry is a key design parameter. Read More

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http://dx.doi.org/10.1186/s41205-019-0039-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6676342PMC
February 2019
19 Reads

Utility of virtual monoenergetic images from spectral detector computed tomography in improving image segmentation for purposes of 3D printing and modeling.

3D Print Med 2019 Jan 18;5(1). Epub 2019 Jan 18.

Department of Radiology, University Hospitals Cleveland Medical Center/Case Western Reserve University, 11100 Euclid Ave, Cleveland, OH, 44106, USA.

Background: One of the key steps in generating three-dimensional (3D) printed models in medicine is segmentation of radiologic imaging. The software tools used for segmentation may be automated, semi-automated, or manual which rely on differences in material density, attenuation characteristics, and/or advanced software algorithms. Spectral Detector Computed Tomography (SDCT) is a form of dual energy computed tomography that works at the detector level to generate virtual monoenergetic images (VMI) at different energies/ kilo-electron volts (keV). Read More

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https://threedmedprint.springeropen.com/articles/10.1186/s41
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http://dx.doi.org/10.1186/s41205-019-0038-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6505638PMC
January 2019
31 Reads

Radiological Society of North America (RSNA) 3D printing Special Interest Group (SIG): guidelines for medical 3D printing and appropriateness for clinical scenarios.

3D Print Med 2018 Nov 21;4(1):11. Epub 2018 Nov 21.

Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada.

Medical three-dimensional (3D) printing has expanded dramatically over the past three decades with growth in both facility adoption and the variety of medical applications. Consideration for each step required to create accurate 3D printed models from medical imaging data impacts patient care and management. In this paper, a writing group representing the Radiological Society of North America Special Interest Group on 3D Printing (SIG) provides recommendations that have been vetted and voted on by the SIG active membership. Read More

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https://threedmedprint.springeropen.com/articles/10.1186/s41
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http://dx.doi.org/10.1186/s41205-018-0030-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6251945PMC
November 2018
25 Reads

3D printing of surgical hernia meshes impregnated with contrast agents: in vitro proof of concept with imaging characteristics on computed tomography.

3D Print Med 2018 Dec 7;4(1):13. Epub 2018 Dec 7.

Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 S. Kingshighway Blvd, Campus Box 8131, St. Louis, MO, 63110, USA.

Background: Selected medical implants and other 3D printed constructs could potentially benefit from the ability to incorporate contrast agents into their structure. The purpose of the present study is to create 3D printed surgical meshes impregnated with iodinated, gadolinium, and barium contrast agents and characterize their computed tomography (CT) imaging characteristics. Commercial fused deposition layering 3D printing was used to construct surgical meshes impregnated with imaging contrast agents in an in vitro model. Read More

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http://dx.doi.org/10.1186/s41205-018-0037-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6283811PMC
December 2018
10 Reads

Exploration of time sequential, patient specific 3D heart unlocks clinical understanding.

3D Print Med 2018 Dec 6;4(1):15. Epub 2018 Dec 6.

University of Illinois College of Medicine, 1 Illini Drive, Peoria, IL, 61605, USA.

Objectives: The purpose was to create a time sequential three-dimensional virtual reality model, also referred to as a four-dimensional model, to explore its possible benefit and clinical applications. We hypothesized that this novel solution allows for the visuospatial benefits of the 3D model and the dynamic benefits of other existing imaging modalities.

Background: We have seen how 3D models hold great value in medical decision making by eliminating the variable visuospatial skills of practitioners. Read More

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https://threedmedprint.springeropen.com/articles/10.1186/s41
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http://dx.doi.org/10.1186/s41205-018-0034-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6283805PMC
December 2018
27 Reads

Efficacy of using a 3D printed lumbosacral spine phantom in improving trainee proficiency and confidence in CT-guided spine procedures.

3D Print Med 2018 Oct 10;4(1). Epub 2018 Oct 10.

Department of Radiology and Biomedical Imaging, University of California, San Francisco, 505 Parnassus Avenue, M-391, San Francisco, CA, 94143-0628, USA.

Background: Minimally-invasive spine procedures provide targeted, individualized diagnosis and pain management for patients. Competence in these procedures is acquired through experience and training. We created a 3D printed model of a degenerative lumbosacral spine with scoliosis and spondylosis, using materials that mimic bone and soft tissue density under CT. Read More

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https://threedmedprint.springeropen.com/articles/10.1186/s41
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http://dx.doi.org/10.1186/s41205-018-0031-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6179970PMC
October 2018
38 Reads

3D printing for congenital heart disease: a single site's initial three-yearexperience.

3D Print Med 2018 Nov 8;4(1):10. Epub 2018 Nov 8.

Arizona State University, Tempe, AZ, USA.

Background: 3D printing is an ideal manufacturing process for creating patient-matched models (anatomical models) for surgical and interventional planning. Cardiac anatomical models have been described in numerous case studies and journal publications. However, few studies attempt to describe wider impact of the novel planning augmentation tool. Read More

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http://dx.doi.org/10.1186/s41205-018-0033-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6223396PMC
November 2018
2 Reads

Material characterization and selection for 3D-printed spine models.

3D Print Med 2018 Oct 19;4(1). Epub 2018 Oct 19.

Carnegie Mellon University, Carnegie Institute of Technology, CERLAB, 3000 Forbes Ave., Pittsburgh, PA, 15213, USA.

The two most popular models used in anatomical training for residents, clinicians, or surgeons are cadavers and sawbones. The former is extremely costly and difficult to attain due to cost, ethical implications, and availability, while the latter is said to not have the same tactile fidelity or mechanical properties as human bone. This study examined the potential use of 3D-printed phantoms to emulate cadaveric, human vertebrae, in hopes of acting as a future use over cadavers. Read More

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http://dx.doi.org/10.1186/s41205-018-0032-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195498PMC
October 2018
7 Reads

High-throughput scaffold-free microtissues through 3D printing.

3D Print Med 2018 Nov 22;4(1). Epub 2018 Nov 22.

Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA.

Background: Three-dimensional (3D) cell cultures and 3D bioprinting have recently gained attention based on their multiple advantages over two-dimensional (2D) cell cultures, which have less translational potential to recapitulate human physiology. 3D scaffold supports, cell aggregate systems and hydrogels have been shown to accurately mimic native tissues and support more relevant cell-cell interactions for studying effects of drugs and bioactive agents on cells in 3D. The development of cost-effective, high-throughput and scaffold-free microtissue assays remains challenging. Read More

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https://threedmedprint.springeropen.com/articles/10.1186/s41
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http://dx.doi.org/10.1186/s41205-018-0029-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6197341PMC
November 2018
4 Reads

Using 3D models in orthopedic oncology: presenting personalized advantages in surgical planning and intraoperative outcomes.

3D Print Med 2018 Nov 26;4(1):12. Epub 2018 Nov 26.

Department of Orthopaedics, Phramongkutklao Hospital and College of Medicine, Bangkok, Thailand.

Background: Three Dimensional (3D) printed models can aid in effective pre-operative planning by defining the geometry of tumor mass, bone loss, and nearby vessels to help determine the most accurate osteotomy site and the most appropriate prosthesis, especially in the case of complex acetabular deficiency, resulting in decreased operative time and decreased blood loss.

Methods: Four complicated cases were selected, reconstructed and printed. These 4 cases were divided in 3 groups of 3D printed models. Read More

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http://dx.doi.org/10.1186/s41205-018-0035-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6261090PMC
November 2018
2 Reads

Utilizing a low-cost desktop 3D printer to develop a "one-stop 3D printing lab" for oral and maxillofacial surgery and dentistry fields.

3D Print Med 2018 Dec 13;4(1). Epub 2018 Aug 13.

4Department of Endodontics, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba 261-8502 Japan.

Background: In the oral and maxillofacial surgery and dentistry fields, the use of three-dimensional (3D) patient-specific organ models is increasing, which has increased the cost of obtaining them. We developed an environment in our facility in which we can design, fabricate, and use 3D models called the "One-stop 3D printing lab". The lab made it possible to quickly and inexpensively produce the 3D models that are indispensable for oral and maxillofacial surgery. Read More

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https://threedmedprint.springeropen.com/articles/10.1186/s41
Publisher Site
http://dx.doi.org/10.1186/s41205-018-0028-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6097791PMC
December 2018
13 Reads

Rapid customization system for 3D-printed splint using programmable modeling technique - a practical approach.

3D Print Med 2018 25;4(1). Epub 2018 May 25.

Graduate School of Governance and Media, Keio University, 5322 Endo, Fujisawa-shi, Kanagawa 252-0882 Japan.

Background: Traditional splinting processes are skill dependent and irreversible, and patient satisfaction levels during rehabilitation are invariably lowered by the heavy structure and poor ventilation of splints. To overcome this drawback, use of the 3D-printing technology has been proposed in recent years, and there has been an increase in public awareness. However, application of 3D-printing technologies is limited by the low CAD proficiency of clinicians as well as unforeseen scan flaws within anatomic models. Read More

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http://dx.doi.org/10.1186/s41205-018-0027-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5970151PMC
May 2018
3 Reads

Patient-specific neurosurgical phantom: assessment of visual quality, accuracy, and scaling effects.

3D Print Med 2018 13;4(1). Epub 2018 Mar 13.

1Department of Physics, Faculty of Philosophy, Science and Letters at Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, SP CEP 14040-901 Brazil.

Background: Training in medical education depends on the availability of standardized materials that can reliably mimic the human anatomy and physiology. One alternative to using cadavers or animal bodies is to employ phantoms or mimicking devices. Styrene-ethylene/butylene-styrene (SEBS) gels are biologically inert and present tunable properties, including mechanical properties that resemble the soft tissue. Read More

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http://dx.doi.org/10.1186/s41205-018-0025-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954795PMC
March 2018
5 Reads

Feasibility study applying a parametric model as the design generator for 3D-printed orthosis for fracture immobilization.

3D Print Med 2018 11;4(1). Epub 2018 Jan 11.

GGraduate School of Media and Governance, Keio University, 5322 Endo, Fujisawa-shi, Kanagawa 252-0882 Japan.

Background: Applying 3D printing technology for the fabrication of custom-made orthoses provides significant advantages, including increased ventilation and lighter weights. Currently, the design of such orthoses is most often performed in the CAD environment, but creating the orthosis model is a time-consuming process that requires significant CAD experience. This skill gap limits clinicians from applying this technology in fracture treatment. Read More

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http://dx.doi.org/10.1186/s41205-017-0024-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954794PMC
January 2018
16 Reads

On the optimization of low-cost FDM 3D printers for accurate replication of patient-specific abdominal aortic aneurysm geometry.

3D Print Med 2018 17;4(1). Epub 2018 Jan 17.

1The School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB UK.

Background: There is a potential for direct model manufacturing of abdominal aortic aneurysm (AAA) using 3D printing technique for generating flexible semi-transparent prototypes. A patient-specific AAA model was manufactured using fused deposition modelling (FDM) 3D printing technology. A flexible, semi-transparent thermoplastic polyurethane (TPU), called Cheetah Water (produced by Ninjatek, USA), was used as the flexible, transparent material for model manufacture with a hydrophilic support structure 3D printed with polyvinyl alcohol (PVA). Read More

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https://threedmedprint.springeropen.com/articles/10.1186/s41
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http://dx.doi.org/10.1186/s41205-017-0023-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954792PMC
January 2018
13 Reads

Low-cost customized cranioplasty using a 3D digital printing model: a case report.

3D Print Med 2018 12;4(1). Epub 2018 Apr 12.

Plastic and Reconstructive Surgeon, Plastic Surgery Institute, Mexico City, Mexico.

Background: Cranial defects usually occur after trauma, neurosurgical procedures like decompressive craniotomy, tumour resections, infection and congenital defects. The purpose of cranial vault repair is to protect the underlying brain tissue, to reduce any localized pain and patient anxiety, and improve cranial aesthetics. Cranioplasty is a frequent neurosurgical procedure achieved with the aid of cranial prosthesis made from materials such as: titanium, autologous bone, ceramics and polymers. Read More

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https://threedmedprint.springeropen.com/articles/10.1186/s41
Publisher Site
http://dx.doi.org/10.1186/s41205-018-0026-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954791PMC
April 2018
25 Reads

Implementation of iterative metal artifact reduction in the pre-planning-procedure of three-dimensional physical modeling.

3D Print Med 2017 31;3(1). Epub 2017 Mar 31.

1Department of Radiology, 200 First Street SW, Rochester, MN 55905 USA.

Background: To assess the impact of metal artifact reduction techniques in 3D printing by evaluating image quality and segmentation time in both phantom and patient studies with dental restorations and/or other metal implants. An acrylic denture apparatus (Kilgore Typodent, Kilgore International, Coldwater, MI) was set in a 20 cm water phantom and scanned on a single-source CT scanner with gantry tilting capacity (SOMATOM Edge, Siemens Healthcare, Forchheim, Germany) under 5 scenerios: (1) Baseline acquisition at 120 kV with no gantry tilt, no jaw spacer, (2) acquisition at 140 kV, (3) acquisition with a gantry tilt at 15°, (4) acquisition with a non-radiopaque jaw spacer and (5) acquisition with a jaw spacer and a gantry tilt at 15°. All acquisitions were reconstructed both with and without a dedicated iterative metal artifact reduction algorithm (MAR). Read More

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http://dx.doi.org/10.1186/s41205-017-0013-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6036666PMC
March 2017
22 Reads

Medical 3D printing: methods to standardize terminology and report trends.

3D Print Med 2017 17;3(1). Epub 2017 Mar 17.

1Department of Radiology, University of Ottawa, 501 Smyth Road, Box 232, K1H 8L6 Ottawa, ON Canada.

Background: Medical 3D printing is expanding exponentially, with tremendous potential yet to be realized in nearly all facets of medicine. Unfortunately, multiple informal subdomain-specific isolated terminological 'silos' where disparate terminology is used for similar concepts are also arising as rapidly. It is imperative to formalize the foundational terminology at this early stage to facilitate future knowledge integration, collaborative research, and appropriate reimbursement. Read More

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http://dx.doi.org/10.1186/s41205-017-0012-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6036766PMC
March 2017
3 Reads

Accelerated workflow for primary jaw reconstruction with microvascular fibula graft.

3D Print Med 2017 14;3(1). Epub 2017 Feb 14.

Department of Oral and Maxillofacial Surgery, University of Mainz, Medical Center, Augustusplatz 2, D-55131 Mainz, Rheinland-Pfalz Germany.

Introduction: Major facial defects due to cancer or deformities can be reconstructed through microvascular osteocutaneous flaps. Hereby CAD/CAM workflows offer a possibility to optimize reconstruct and reduce surgical time. We present a retrospectiv observational study regarding the developement of an in-house workflow allowing an accelerated CAD/CAM fibula reconstruction without outsourcing. Read More

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http://dx.doi.org/10.1186/s41205-017-0010-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6036765PMC
February 2017
7 Reads

Fabrication approaches for the creation of physical models from microscopy data.

3D Print Med 2017 14;3(1). Epub 2017 Feb 14.

1Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Ave, Madison, WI 53705 USA.

Background: Three-dimensional (3D) printing has become a useful method of fabrication for many clinical applications. It is also a technique that is becoming increasingly accessible, as the price of the necessary tools and supplies decline. One emerging, and unreported, application for 3D printing is to aid in the visualization of 3D imaging data by creating physical models of select structures of interest. Read More

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http://dx.doi.org/10.1186/s41205-017-0011-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6036764PMC
February 2017
5 Reads