7,490 results match your criteria Back Reconstruction


T-drain esophagostomy under thoracoscopy for intrathoracic esophagogastric anastomotic leakage following esophagectomy for esophagogastric junction cancer: A case report.

Int J Surg Case Rep 2020 Jun 25;73:79-83. Epub 2020 Jun 25.

Department of Gastroenterological Surgery, Ishikawa Prefectural Central Hospital, 2-1 Kuratsukihigashi, Kanazawa, Ishikawa, 9208530, Japan. Electronic address:

Introduction: Intrathoracic esophagogastric anastomotic leakage is considered the most severe complication. We successfully performed T-drain esophagostomy under thoracoscopy for intrathoracic esophagogastric anastomotic leakage.

Presentation Of Case: A 44-year-old man visited a local hospital because of vomiting during the night. Read More

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http://dx.doi.org/10.1016/j.ijscr.2020.06.095DOI Listing

Survivorship of Autologous Structural Bone Graft at a Minimum of Two Years when used to address Significant Glenoid Bone Loss In Primary and Revision Shoulder Arthroplasty: A CT and clinical Review.

J Shoulder Elbow Surg 2020 Jul 7. Epub 2020 Jul 7.

Consultant Hand and Upper Limb Surgeon, Wrightington Hospital, Hall Lane, Appley Bridge Wigan, UK WN6 9EP.

Background: Severe glenoid bone loss remains a challenge in patients requiring shoulder arthroplasty and often requires autogenous bone grafting. The purpose of this study was to assess the integrity of the bone graft at two years in a series of primary and revision shoulder replacements where glenoid bone loss was managed using a structural autograft (humeral head or iliac crest bone graft) in combination with a trabecular titanium implant.

Methods: Ethical approval was sought and the study has a portfolio study status by the NIHR (17/YH/0318). Read More

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http://dx.doi.org/10.1016/j.jse.2020.06.015DOI Listing

Image quality comparison of a nonlinear image-based noise reduction technique with a hybrid-type iterative reconstruction for pediatric computed tomography.

Phys Med 2020 Jul 6;76:100-108. Epub 2020 Jul 6.

Department of Radiology, Kindai University Faculty of Medicine, 377-2 Ohno-Higashi, Osakasayama, Osaka 589-8511, Japan. Electronic address:

Purpose: To compare computed tomography (CT) image properties between a vendor-independent image-based noise reduction technique, Image-space Noise Reduction (iNoir) and a hybrid-type iterative reconstruction technique, Adaptive Statistical Iterative Reconstruction (ASIR).

Methods: A cylindrical water phantom, corresponding to pediatric body size, containing soft-tissue-equivalent rod and 12-mg iodine/ml rod was scanned at size-specific dose estimates of 8.4 and 16. Read More

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http://dx.doi.org/10.1016/j.ejmp.2020.06.015DOI Listing

Iterative reconstruction algorithm improves the image quality without affecting quantitative measurements of computed tomography perfusion in the upper abdomen.

Eur J Radiol Open 2020 3;7:100243. Epub 2020 Jul 3.

Department of Surgery in Linköping, and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.

Objective: To investigate differences between reconstruction algorithms in quantitative perfusion values and time-attenuation curves in computed tomography perfusion (CTP) examinations of the upper abdomen.

Methods: Twenty-six CTP examinations were reconstructed with filtered back projection and an iterative reconstruction algorithm, advanced modeled iterative reconstruction (ADMIRE), with different levels of noise-reduction strength. Using the maximum-slope model, quantitative measurements were obtained: blood flow (mL/min/100 mL), blood volume (mL/100 mL), time to peak (s), arterial liver perfusion (mL/100 mL/min), portal venous liver perfusion (mL/100 mL/min), hepatic perfusion index (%), temporal maximum intensity projection (Hounsfield units (HU)) and temporal average HU. Read More

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http://dx.doi.org/10.1016/j.ejro.2020.100243DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7334814PMC

Informed Consent in Patients Undergoing Primary Hip and Knee Arthroplasty: What Do Patients Want to Know?

Cureus 2020 Jun 5;12(6):e8457. Epub 2020 Jun 5.

Trauma and Orthopaedics, Guy's and St Thomas' Hospital, London, GBR.

Introduction The consenting process has been surgeon-focussed traditionally, but there is a recent trend towards making the process more patient and procedure-focussed. The primary aims were to identify the risks considered most important and requiring further discussion by the patients undergoing primary total hip arthroplasty (THA) and primary total knee arthroplasty (TKA), as well as to identify the sporting and recreational activities these patients would like to pursue after surgery according to the age group, taking into consideration their values and expectations. The secondary aim is to assess the compliance of the current consenting process with guidelines set out by a governing body in a tertiary referral arthroplasty unit. Read More

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http://dx.doi.org/10.7759/cureus.8457DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7336667PMC

Introduction and evaluation of a novel multi-camera surface topography system.

Gait Posture 2020 Jun 20;80:367-373. Epub 2020 Jun 20.

Department of Orthopaedic Surgery, University Hospital RWTH Aachen, Aachen, Germany.

Background: Surface topography can be used for the evaluation of spinal deformities without any radiation. However, so far this technique is limited to posterior trunk measurements due to the use of a single posterior camera.

Research Question: Purpose of this study was to introduce a new multi camera surface topography system and to test its reliability and validity. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2020.06.016DOI Listing

Pyogenic spondylodiscitis of the lumbar spine related to anastomotic fistula after surgery for esophageal cancer: a case report.

Surg Case Rep 2020 Jun 30;6(1):155. Epub 2020 Jun 30.

Department of Gastrointestinal Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan.

Background: Pyogenic spondylodiscitis is an extremely rare complication of esophagectomy for esophageal cancer.

Case Presentation: A 70-year-old Japanese man, with a previous medical history of type 2 diabetes mellitus, coronary artery disease, and laryngeal cancer, received neoadjuvant chemotherapy and underwent thoracoscopic esophagectomy with gastric tube reconstruction for advanced esophageal cancer. Cervical esophagogastrostomy with circular-stapled end-to-side anastomosis was performed. Read More

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http://dx.doi.org/10.1186/s40792-020-00922-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7326743PMC

Benefits of iterative metal artifact reduction and dual-energy CT towards mitigating artifact in the setting of total shoulder prostheses.

Skeletal Radiol 2020 Jun 29. Epub 2020 Jun 29.

Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA.

Objective: To determine the utility of iterative metal artifact reduction and 130 keV dual-energy virtual monoenergetic images to improve bone and soft tissue visualization in CT scans affected by metal artifacts.

Material And Methods: Thirteen females and 6 males with a history of total shoulder prosthesis who underwent dual-energy shoulder CT were included. Four sets of images were reconstructed for each patient: (1) original polychromatic kV images reconstructed with weighted filtered back projection; (2) polychromatic kV images with iterative metal artifact reduction; (3) 130 keV dual-energy virtual monoenergetic; (4) combined iterative metal artifact reduction and 130 keV dual-energy virtual monoenergetic. Read More

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http://dx.doi.org/10.1007/s00256-020-03528-3DOI Listing

Predicting length of stay in head and neck patients who undergo free flap reconstruction.

Laryngoscope Investig Otolaryngol 2020 Jun 28;5(3):461-467. Epub 2020 May 28.

Department of Otolaryngology Massachusetts Eye and Ear Infirmary Boston Massachusetts USA.

Objective: Understanding factors that affect postoperative length of stay (LOS) may improve patient recovery, hasten postoperative discharge, and minimize institutional costs. This study sought to (a) describe LOS among head and neck patients undergoing free flap reconstruction and (b) identify factors that predict increased LOS.

Methods: A retrospective cohort was performed of 282 head and neck patients with free flap reconstruction for oncologic resection between 2011 and 2013 at a tertiary academic medical center. Read More

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http://dx.doi.org/10.1002/lio2.410DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7314462PMC

Donor Site Scar Preference in Patients Requiring Free Flap Reconstruction.

Plast Surg (Oakv) 2020 May 21;28(2):88-93. Epub 2020 May 21.

The Section of Plastic Surgery, University of Manitoba, Winnipeg, Canada.

Introduction: In traumatic reconstruction, surgeons frequently harvest flaps from donor sites that they are comfortable performing and with favourable tissue characteristics without determining the patients preferred site. The study's goal was to determine participants free flap donor site preference based on aesthetics as it relates to the size of the defect being reconstructed.

Methodology: Participants were asked to imagine that they were in a trauma that resulted in a wound of variable sizes. Read More

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http://dx.doi.org/10.1177/2292550320925922DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7298576PMC

Impact of 80 kVp with iterative reconstruction algorithm and low-dose contrast medium on the image quality of craniocervical CT angiography.

Clin Imaging 2020 May 29;68:124-130. Epub 2020 May 29.

Department of Radiology, Kaohsiung Veterans General Hospital, No. 386, Ta-Chung 1st Road, Kaohsiung 81362, Taiwan; Faculty of Medicine, School of Medicine, National Yang Ming University, Taipei, Taiwan; Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan. Electronic address:

Purpose: To assess the image quality of 80-kVp craniocervical CT angiography (CCCTA) protocol combined with adaptive statistical iterative reconstruction-V (ASIR-V) and low-dose contrast medium (CM).

Methods: A total of 119 patients were randomly divided into three groups. For group A, 120-kVp protocol was followed with 60 ml CM and filtered back projection; for group B, 80-kVp protocol with 60 ml CM and ASIR-V; and for group C, 80-kVp protocol with 45 ml CM and ASIR-V. Read More

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http://dx.doi.org/10.1016/j.clinimag.2020.05.024DOI Listing

From clinic to hypothesis, an innovative operation for the treatment of lumbar spinal stenosis in a minimal invasive way.

Med Hypotheses 2020 Jun 19;144:110007. Epub 2020 Jun 19.

Department of Orthopaedic, Peking University Third Hospital, Beijing, PR China; Pain Medicine Center, Peking University Third Hospital, Beijing, PR China. Electronic address:

Concerning the damage to back muscles and posterior ligament complex (PLC) by posterior open approach for lumbar spinal stenosis (LSS), the oblique lateral intervertebral fusion (OLIF) is pretty popular nowadays. However, oblique lateral approach has obvious drawbacks, which are limited vision and operative scope for achieving spinal canal decompression. Herein, we present a hypothesis that lumbar canal decompression can be well achieved by OLIF combined with spinal endoscope operative system. Read More

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http://dx.doi.org/10.1016/j.mehy.2020.110007DOI Listing

Effects of latissimus dorsi (LD) flap harvest on shoulder function in delayed breast reconstruction. A long-term analysis considering the acromiohumeral interval (AHI), the WOSI, and BREAST-Q questionnaires.

J Plast Reconstr Aesthet Surg 2020 May 25. Epub 2020 May 25.

Department of Plastic, Reconstructive and Aesthetic Surgery, Campus Bio-Medico University of Rome, Via Alvaro del Portillo, 200 - 00128, Rome, (Italy).

Background: The latissimus dorsi (LD) flap is reliable and versatile with many indications and low donor site morbidity. The aim of this study is to evaluate the long-term effects of LD flap on the shoulder function in patients undergoing delayed breast reconstruction.

Methods: This case-control study enrolled women who underwent implant-based (IB) breast reconstruction, radical lymphadenectomy, and radiotherapy between 2006 and 2016. Read More

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http://dx.doi.org/10.1016/j.bjps.2020.05.047DOI Listing

Task-based characterization of a deep learning image reconstruction and comparison with filtered back-projection and a partial model-based iterative reconstruction in abdominal CT: A phantom study.

Phys Med 2020 Jun 20;76:28-37. Epub 2020 Jun 20.

Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Rue du Bugnon 46, 1011 Lausanne, Switzerland. Electronic address:

Purpose: We aimed to thoroughly characterize image quality of a novel deep learning image reconstruction (DLIR), and investigate its potential for dose reduction in abdominal CT in comparison with filtered back-projection (FBP) and a partial model-based iterative reconstruction (ASiR-V).

Methods: We scanned a phantom at three dose levels: regular (7 mGy), low (3 mGy) and ultra-low (1 mGy). Images were reconstructed using DLIR (low, medium and high levels) and ASiR-V (0% = FBP, 50% and 100%). Read More

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http://dx.doi.org/10.1016/j.ejmp.2020.06.004DOI Listing

[Application of membrane induced by antibiotic loaded bone cement in skin grafting for tendon exposed wound healing].

Zhongguo Gu Shang 2020 Jun;33(6):564-6

Department of Orthopaedics, 906 Hospital of the Joint Logistics Support Force of the Chinese People's Liberation Army, Ningbo 314050, Zhejiang, China.

Objective: To evaluate the effects of membrane induced by antibiotic-loaded bone cement in skin grafting for tendon exposed wound healing.

Methods: A total of 10 traumatic patients with tendon exposed wound were admitted to our department between February 2016 and December 2018, including 6 males and 4 females, with a mean age of 34.6 years old (ranged, 19 to 43 years old), and treatment duration ranged from 2 to 6 months. Read More

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http://dx.doi.org/10.12200/j.issn.1003-0034.2020.06.015DOI Listing

"Auricular reconstruction: A sociocultural, surgical and scientific perspective".

J Plast Reconstr Aesthet Surg 2020 May 6. Epub 2020 May 6.

Reconstructive Surgery & Regenerative Medicine Research Group, Institute of Life Sciences, Swansea University, United Kingdom; Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, United Kingdom. Electronic address:

The functional and sociocultural role of the auricle has been prevalent in art, literature and history for millennia. It is no surprise, therefore, that auricular anomalies can be associated with affective disorders and impaired academic performance in children. The challenge of auricular reconstruction has captured the attention of surgical innovators for millennia with the earliest records of auricular reconstruction documented in the Edwin Smith Surgical Papyrus dating back to 3000 BCE. Read More

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http://dx.doi.org/10.1016/j.bjps.2020.03.025DOI Listing

Assessing the Influence of Attending Surgeon Continuity on Free Flap Outcomes Following Unplanned Returns to the Operating Room.

J Reconstr Microsurg 2020 Jun 18. Epub 2020 Jun 18.

Division of Plastic, Maxillofacial, and Oral Surgery, Department of Surgery, Duke University Health System, Durham, North Carolina.

Background:  Unplanned returns to the operating room (OR) may be necessary at times to salvage a compromised free flap. The aim of this study was to assess the influence of attending surgeon continuity on free flap outcomes following a return to the OR.

Methods:  We retrospectively reviewed patients who underwent free flap reconstruction and experienced an unplanned return to the OR within 30 days from 2002 to 2017. Read More

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http://dx.doi.org/10.1055/s-0040-1713173DOI Listing
June 2020
1.006 Impact Factor

Phase Contrast CT Enabled Three-Material Decomposition in Spectral CT Imaging.

Proc SPIE Int Soc Opt Eng 2020 Feb 16;11312. Epub 2020 Mar 16.

Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI.

Three-material decomposition is crucial for material quantification when more than two elemental materials, including a K-edge material, are presented in an image object. In principle, three-material decomposition requires a triple energy scan which cannot be directly accomplished using a conventional dual energy CT system. In this work, a new scheme to enable three-material decomposition by employing phase contrast CT was presented. Read More

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http://dx.doi.org/10.1117/12.2549014DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7297515PMC
February 2020

Immediate plastic surgery closure at index spinal surgery minimizes complications compared to delayed reconstruction: A retrospective cohort review.

J Plast Reconstr Aesthet Surg 2019 Dec 16. Epub 2019 Dec 16.

Division of Plastic Surgery, Department of Surgery, University of Pennsylvania School of Medicine, Philadelphia, PA, United States.

Background: Complex spine surgery in patients with major comorbidities leads to increased need for midline back wound reconstruction by plastic surgeons. Literature suggests that back wound reconstruction concurrent with high-risk immediate/index spine surgery may lead to fewer complication. This study aimed to validate this claim in a large cohort treated at a tertiary center. Read More

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http://dx.doi.org/10.1016/j.bjps.2019.11.008DOI Listing
December 2019

Perforator-Based Flaps for Defect Reconstruction of the Posterior Trunk.

Ann Plast Surg 2020 Jun 11. Epub 2020 Jun 11.

From the Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Ludwigshafen.

Introduction: Full-thickness soft tissue defects of the back remain challenging clinical problems for reconstructive surgeons. Among a vast variety of local flap options, perforator-based local flaps gain increasing popularity lately. Because mostly heterogeneous patient cohort comparison of different perforator flaps is difficult and decision-making algorithms are lacking. Read More

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http://dx.doi.org/10.1097/SAP.0000000000002439DOI Listing

The effect of the reconstruction algorithm for the pulmonary nodule detection under the metal artifact caused by a pacemaker.

Medicine (Baltimore) 2020 Jun;99(24):e20579

From the Department of Radiology, Osaka University Graduate School of Medicine, Suita-city.

The aim was to compare the effects of metal artifacts from a pacemaker on pulmonary nodule detection among computed tomography (CT) images reconstructed using filtered back projection (FBP), single-energy metal artifact reduction (SEMAR), and forward-projected model-based iterative reconstruction solution (FIRST).Nine simulated nodules were placed inside a chest phantom with a pacemaker. CT images reconstructed using FBP, SEMAR, and FIRST were acquired at low and standard dose, and were evaluated by 2 independent radiologists. Read More

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http://dx.doi.org/10.1097/MD.0000000000020579DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7302625PMC

"Complex aortic, visceral and renal arteries reconstruction with a four branched Dacron graft for Middle Aortic Syndrome secondary to Takayasu´s Arteritis".

Ann Vasc Surg 2020 Jun 10. Epub 2020 Jun 10.

Department of Surgery, Section of Vascular Surgery and Endovascular Therapy, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.. Electronic address:

The Middle Aortic Syndrome (MAS) is an uncommon clinical expression as a result of isolated stenosis or complete occlusion of the descending thoracic and/or abdominal aorta; Takayasu's Arteritis (TA) is a rare vasculitis and a recognized etiology of MAS. We herein present the case of a 52 year old woman with refractory renovascular hypertension and progressive bilateral lower extremity claudication, she had known history of TA. A Computed Tomography Angiography (CTA) demonstrated an aortic occlusive lesion compromising the origin of the celiac trunk, superior mesenteric and bilateral renal arteries. Read More

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http://dx.doi.org/10.1016/j.avsg.2020.05.064DOI Listing
June 2020
1.029 Impact Factor

Elastic fibers: The missing key to improve engineering concepts for reconstruction of the Nucleus Pulposus in the intervertebral disc.

Acta Biomater 2020 Jun 9. Epub 2020 Jun 9.

Centre for Health Technologies, School of Biomedical Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, NSW, Australia. Electronic address:

The increasing prevalence of low back pain has imposed a heavy economic burden on global healthcare systems. Intense research activities have been performed for the regeneration of the Nucleus Pulposus (NP) of the IVD; however, tissue-engineered scaffolds have failed to capture the multi-scale structural hierarchy of the native tissue. The current study revealed for the first time, that elastic fibers form a network across the NP consisting of straight and thick parallel fibers that were interconnected by wavy fine fibers and strands. Read More

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http://dx.doi.org/10.1016/j.actbio.2020.06.008DOI Listing

Exploring of the Mechanism of Rib Fracture Caused by Landing on Different Parts of the Trunk after Falls from Height Using Finite Element Method.

Fa Yi Xue Za Zhi 2020 Apr;36(2):181-186

School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China.

Abstract: Objective To study the mechanism of rib fracture caused by landing on different parts of the trunk using finite element method, and to provide some new techniques and new ideas for the reconstruction of the whole process of falls from height. Methods The finite element method was used to study the rib fracture of human security model THUMS4.0 caused by landing on different parts of the trunk. Read More

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http://dx.doi.org/10.12116/j.issn.1004-5619.2020.02.007DOI Listing

A Novel Metallic Artifact Reduction Technique When Using a Computed Tomography-Guided Percutaneous Metallic Antenna to Ablate Malignant Pulmonary Nodules: A Qualitative and Quantitative Assessment.

Med Sci Monit 2020 Jun 11;26:e923541. Epub 2020 Jun 11.

Department of Radiology, Peking Union Medical College Hospital, Beijing, China (mainland).

BACKGROUND Metallic microwave ablation (MWA) antenna-related artifacts are usually created in conventional CT images, and these artifacts can influence the effect of ablation. The aim of this study was to evaluate a new type of metal artifact reduction (MAR+) technique in CT-guided MWA for lung cancer. MATERIAL AND METHODS This retrospective study enrolled 30 lung cancer patients who received CT-guided MWA treatment from December 2017 to April 2018. Read More

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http://dx.doi.org/10.12659/MSM.923541DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304313PMC

Full-frequency correction of spatial impulse response in back-projection scheme using space-variant filtering for optoacoustic mesoscopy.

Photoacoustics 2020 Sep 21;19:100193. Epub 2020 May 21.

Institute for Biological and Medical Imaging, Technical University of Munich and Helmholtz Center Munich, Neuherberg, 85764, Germany.

The fidelity and quality of reconstructed images in optoacoustic mesoscopy (OPAM) can be significantly improved by considering the spatial impulse response (SIR) of the employed focused transducer into reconstruction. However, the traditional method fully taking the SIR into account can hardly meet the data-intensive requirements of high resolution OPAM because of excessive memory and time consumption. Herein, a modified back-projection method using a space-variant filter for full-frequency correction of the SIR is presented, and applied to the OPAM system with a sphere-focused transducer. Read More

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http://dx.doi.org/10.1016/j.pacs.2020.100193DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7264078PMC
September 2020

Measurement accuracy of lung nodule volumetry in a phantom study: Effect of axial-volume scan and iterative reconstruction algorithm.

Medicine (Baltimore) 2020 Jun;99(23):e20543

Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Republic of Korea.

An axial-volume scan with adaptive statistical iterative reconstruction-V (ASIR-V) is newly developed. Our goal was to identify the influence of axial-volume scan and ASIR-V on accuracy of automated nodule volumetry.An "adult' chest phantom containing various nodules was scanned using both helical and axial-volume modes at different dose settings using 256-slice CT. Read More

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http://dx.doi.org/10.1097/MD.0000000000020543DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7306330PMC

Utilization of virtual low-keV monoenergetic images generated using dual-layer spectral detector computed tomography for the assessment of peritoneal seeding from ovarian cancer.

Medicine (Baltimore) 2020 Jun;99(23):e20444

Department of Radiology, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.

This study aimed to compare the quality of virtual low-keV monoenergetic images vs conventional images reconstructed from dual-layer spectral detector computed tomography (SDCT) for the detection of peritoneal implants of ovarian cancer.Fifty ovarian cancer patients who underwent abdominopelvic SDCT scans were included in this retrospective study. Virtual monoenergetic images at 40 (VMI40) and 50 keV (VMI50), and two conventional images were reconstructed using filtered back projection (FBP) and iterative model reconstruction (IMR) protocols. Read More

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http://dx.doi.org/10.1097/MD.0000000000020444DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7306341PMC

MusiJ: an ImageJ plugin for video nanoscopy.

Biomed Opt Express 2020 May 14;11(5):2548-2559. Epub 2020 Apr 14.

Department of Physics and Technology, UiT The Arctic University of Norway, NO-9037 Tromsø, Norway.

We present an open-source implementation of the fluctuation-based nanoscopy method MUSICAL for ImageJ. This implementation improves the algorithm's computational efficiency and takes advantage of multi-threading to provide orders of magnitude faster reconstructions than the original MATLAB implementation. In addition, the plugin is capable of generating super-resolution videos from large stacks of time-lapse images via an interleaved reconstruction, thus enabling easy-to-use multi-color super-resolution imaging of dynamic systems. Read More

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http://dx.doi.org/10.1364/BOE.382735DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249817PMC

Reverse-flow latissimus dorsi myocutaneous flap in a multi-step approach for complex back defect reconstruction: A case report.

Microsurgery 2020 Jun 4. Epub 2020 Jun 4.

Plastic and Reconstructive Microsurgery, Careggi University Hospital, Florence, Italy.

Reconstruction of complex back defects is challenging for reconstructive surgeons, as it should preserve function, provide adequate coverage, and minimize morbidity. We present a case of multiple-step reconstruction after resection of a large squamous cell carcinoma recurrence in a 68-year-old man, with local perforator flaps and a reverse-flow latissimus dorsi myocutaneous flap. After radical excision, four propeller perforator flaps were harvested to cover a 30 × 25 cm defect, based on the dorsal branch of the fifth posterior intercostal arteries (right 20 × 9 cm, left 17 × 9 cm) and on the superior gluteal arteries (right 20 × 11 cm, left 21 × 12 cm) bilaterally. Read More

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http://dx.doi.org/10.1002/micr.30615DOI Listing

Influence of tube voltage, tube current and newer iterative reconstruction algorithms in CT perfusion imaging in rabbit liver VX2 tumors.

Diagn Interv Radiol 2020 Jun 3. Epub 2020 Jun 3.

Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.

Purpose: We aimed to explore the influence of tube voltage, current and iterative reconstruction (IR) in computed tomography perfusion imaging (CTPI) and to compare CTPI parameters with microvessel density (MVD).

Methods: Hepatic CTPI with three CTPI protocols (protocol A, tube voltage/current 80 kV/40 mAs; protocol B, tube voltage/current 80 kV/80 mAs; protocol C: tube voltage/current 100 kV/80 mAs) were performed in 25 rabbit liver VX2 tumor models, and filtered back projection (FBP) and IR were used for reconstruction of raw data. Hepatic arterial perfusion (HAP), hepatic portal perfusion (HPP), total perfusion (TP), hepatic arterial perfusion index (HPI), blood flow (BF) and blood volume (BV) of VX2 tumor and normal hepatic parenchyma were measured. Read More

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http://dx.doi.org/10.5152/dir.2019.19147DOI Listing

Characterizing plasma with emission tomography-Feasibility study on synthetic and experimental data.

Rev Sci Instrum 2020 May;91(5):053102

Department of Physics, Center for Accelerator Science, Old Dominion University, Norfolk, Virginia 23529, USA.

We present a feasibility study on different tomographic algorithms to overcome the issues of finite sets of projection data, limited viewing angles, and noisy data, which cause the tomographic reconstruction to be an ill-posed inversion problem. We investigated three approaches: single angle Abel inversion, two angle approach, and multiple angle 2D plasma tomography. These methods were tested on symmetric and asymmetric sample functions and on experimental results from a supersonic flowing argon microwave plasma sustained in a cylindrical quartz cavity. Read More

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http://dx.doi.org/10.1063/1.5138921DOI Listing

Patient satisfaction in one-stage immediate breast reconstruction after mastectomy: A multi-center comparative patient evaluation of prosthesis, LDMF, and TRAM techniques.

Medicine (Baltimore) 2020 May;99(22):e19991

Department of Breast Surgery, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.

To analyze patient satisfaction and the predictive factors characterizing three types of one-stage immediate breast reconstruction (IBR) after mastectomy, including prosthesis, latissimus dorsi myocutaneous flap (LDMF), transverse rectus abdominis myocutaneous (TRAM) flap techniques.Data were collected via face-to-face or telephone interviews from eight breast centers in China from January 2012 to December 2016. A standardized questionnaire that evaluated the general satisfaction and aesthetic satisfaction was sent to patients who had undergone IBR. Read More

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http://dx.doi.org/10.1097/MD.0000000000019991DOI Listing
May 2020
5.723 Impact Factor

Atraumatic splenic rupture in a patient treated with apixaban: A case report.

Int J Surg Case Rep 2020 11;71:270-273. Epub 2020 May 11.

Sir Charles Gairdner Hospital, General Surgery - Western Australia Liver and Kidney (WALK), WA, Australia.

Introduction: Splenic rupture is often seen in the context of significant trauma. Atraumatic ruptures are described in the context of malignancy, inflammation or infection directly affecting the spleen. Splenic ruptures occurring in patients taking apixaban, a factor Xa inhibitor, are challenging due to the scarcity of a direct reversal agent. Read More

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http://dx.doi.org/10.1016/j.ijscr.2020.04.050DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7264001PMC

Long-term outcome of iliosacral resection without reconstruction for primary bone tumours.

Bone Joint J 2020 Jun;102-B(6):779-787

University Musculoskeletal Unit, Mount Sinai Hospital, Toronto, Canada.

Aims: Iliac wing (Type I) and iliosacral (Type I/IV) pelvic resections for a primary bone tumour create a large segmental defect in the pelvic ring. The management of this defect is controversial as the surgeon may choose to reconstruct it or not. When no reconstruction is undertaken, the residual ilium collapses back onto the remaining sacrum forming an iliosacral pseudarthrosis. Read More

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http://dx.doi.org/10.1302/0301-620X.102B6.BJJ-2020-0004DOI Listing

Technical Note: Development of an ischemic defect model insert attachable to a commercially available myocardial phantom.

Med Phys 2020 May 28. Epub 2020 May 28.

Department of Medical Radiological Technology, Faculty of Health Sciences, Kyorin University, B-307, 5-4-1 Shimorenjaku Mitaka-shi, Tokyo, 181-8612, Japan.

Objective: The purpose of this study was to develop a novel myocardial phantom insert model that attaches to commercially available myocardial phantoms and simulates an ischemic area, using three-dimensional printing technology.

Methods: Ischemic inserts were designed to give four levels of absolute percent contrast (Low; 10%, Medium; 20%, High; 35%, and Defect; 100%) using CT images and computer-aided design software. The ischemic insert was composed of multiple slit structures to replicate myocardial ischemia. Read More

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http://dx.doi.org/10.1002/mp.14296DOI Listing

Reuse of liver allograft from a brain-dead recipient: A case report.

Ann Hepatobiliary Pancreat Surg 2020 May;24(2):192-197

Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

We report our first case of deceased-donor liver transplantation (LT) using a reuse liver graft after the first LT. The recipient was a 38-year-old female with fulminant hepatic failure from toxic hepatitis. She had a history of herb intake and her liver function deteriorated progressively. Read More

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http://dx.doi.org/10.14701/ahbps.2020.24.2.192DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7271115PMC

State of the art in total body PET.

EJNMMI Phys 2020 May 25;7(1):35. Epub 2020 May 25.

Department of Radiology, University of Pennsylvania, Philadelphia, USA.

The idea of a very sensitive positron emission tomography (PET) system covering a large portion of the body of a patient already dates back to the early 1990s. In the period 2000-2010, only some prototypes with long axial field of view (FOV) have been built, which never resulted in systems used for clinical research. One of the reasons was the limitations in the available detector technology, which did not yet have sufficient energy resolution, timing resolution or countrate capabilities for fully exploiting the benefits of a long axial FOV design. Read More

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http://dx.doi.org/10.1186/s40658-020-00290-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7248164PMC

Single Orifice Outflow Reconstruction in Various Tributaries of the Right Liver Graft Using Commercialized Polyethylene Terephthalate Y-graft: A technical Simplification of Venous Reconstruction in 3 Cases.

Transplant Proc 2020 May 21. Epub 2020 May 21.

Department of Surgery, Gachon University Gil Medical Center, Gachon University School of Medicine, Incheon, Korea. Electronic address:

Background: Hepatic vein reconstruction is very important in living donor liver transplantation to prevent outflow obstruction and maintain the graft function. In right liver grafts, reconstruction of the tributary of the middle hepatic vein (MHV) or inferior hepatic vein (IHV) is mandatory, and several options are recommended. Recently, it has been reported that a single, wide orifice is an important perquisite for adequate outflow in liver transplantation. Read More

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http://dx.doi.org/10.1016/j.transproceed.2020.01.146DOI Listing

Intraoral repair of a chipped porcelain-zirconia restoration.

J Esthet Restor Dent 2020 May 22. Epub 2020 May 22.

Post-Graduate Program in Dentistry, School of Dentistry, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil.

Objective: Ceramic fracture is an undesirable outcome of the rehabilitation with fixed partial dentures (FPD), mainly because it may involve additional cost and clinical time for intraoral repair or replacement of the restoration. This clinical report describes a 5 years survival intraoral repair of a chipped porcelain veneered zirconia framework restoration using a resin-based composite.

Clinical Considerations: A FPD of porcelain veneered zirconia was made. Read More

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http://dx.doi.org/10.1111/jerd.12592DOI Listing

An Individualized Patient-centric Approach and Evolution towards Total Autologous Free Flap Breast Reconstruction in an Academic Setting.

Plast Reconstr Surg Glob Open 2020 Apr 7;8(4):e2681. Epub 2020 Apr 7.

Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Tex.

Advances with newer perforator flaps and complex microsurgical techniques have enabled creative solutions in autologous breast reconstruction. For patients seeking total autologous breast reconstruction without the use of implants, body regions other than the abdomen have emerged to provide a substitute or additional donor tissue. In cases where abdominal perforator flaps are not possible (as with prior abdominoplasty), flaps taken from the lower back or thigh can be used. Read More

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http://dx.doi.org/10.1097/GOX.0000000000002681DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7209872PMC

[Evaluation of the Number of Sampling Angles in Three Dimensional Ordered Subset Expectation Maximization: Comparison of Step and Shoot Acquisition and Continuous Acquisition].

Nihon Hoshasen Gijutsu Gakkai Zasshi 2020 ;76(5):491-499

Division of Radiology, Department of Medical Technology, Kyushu University Hospital.

Three dimensional ordered subset expectation maximization (3D-OSEM) improves spatial resolution and contrast. Continuous acquisition, and step and shoot acquisition are used in single photon emission computed tomography (SPECT). The purpose of this study was to evaluate the effect of 3D-OSEM when acquisition method was different. Read More

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http://dx.doi.org/10.6009/jjrt.2020_JSRT_76.5.491DOI Listing
January 2020

CT colonography with spectral filtration and advanced modeled iterative reconstruction in the third-generation dual-source CT: image quality, radiation dose and performance in clinical utility.

Acad Radiol 2020 May 17. Epub 2020 May 17.

Department of Radiology, Peking Union Medical College Hospital, Shuaifuyuan No. 1, Dongcheng District, 100730, Beijing, China.

Rationale And Objectives: To evaluate image quality, radiation dose and its diagnostic performance in clinical utility of CT colonography (CTC) applying spectral filtration and advanced modeled iterative reconstruction (ADMIRE) techniques in third-generation dual-source CT.

Materials And Methods: A total of 125 patients for screening or diagnostic purposes underwent CTC at 120kVp standard dose (120kVp-STD) with filtered-back projection reconstruction (FBP) in supine position, then at a tin-filtered 150 kVp low dose (Sn150kVp-LD) and a tin-filtered 100 kVp ultra-low dose (Sn100kVp-ULD) with ADMIRE reconstruction in prone position. Radiation metrics were recorded. Read More

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http://dx.doi.org/10.1016/j.acra.2020.03.040DOI Listing
May 2020
2.077 Impact Factor

Arterial reconstruction using the donor's gonadal vein in living renal transplantation with multiple renal arteries: a case report and a literature review.

BMC Nephrol 2020 May 20;21(1):190. Epub 2020 May 20.

Department of Urology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.

Background: Arterial reconstruction is one of the paramount procedures in kidney transplantation (KT) and greatly important if the procured kidney has multiple renal arteries (MRA). Despite various established techniques for arterial reconstruction, sometimes, the surgeon finds performing arterial anastomoses challenging in case of MRA. In our case, the donor's gonadal vein and recipient's internal iliac artery graft were used for arterial anastomoses, and 3 years after KT, the allograft did not present vascular complications. Read More

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http://dx.doi.org/10.1186/s12882-020-01848-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7238598PMC

The effects of human amniotic membrane on silicone related capsule formation in rats.

J Plast Surg Hand Surg 2020 May 19:1-6. Epub 2020 May 19.

Department of Plastic Surgery, School of Medicine, Sağlık Bilimleri University, İstanbul, Turkey.

Silicone breast implants are commonly used materials in plastic surgery for breast augmentation and reconstruction and the most severe complication of silicone implants are capsule contraction which occurs in 40% of patients. The aim of our study is to evaluate how the amniotic membrane alters the capsule formation effects of silicone 24 wistar rats were used in the study. We placed a bare silicone block into the left side (Subgroup A) and single layer amniotic membrane coated silicone block into the right side (Subgroup B) of the rats back. Read More

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http://dx.doi.org/10.1080/2000656X.2020.1766476DOI Listing

Reproducibility of calcium scoring of the coronary arteries: comparison between different vendors and iterative reconstructions.

Acta Radiol Open 2020 Apr 28;9(4):2058460120922147. Epub 2020 Apr 28.

Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea.

Background: The coronary artery calcium scoring (CCS) has been widely used for cardiac risk stratification for asymptomatic patients.

Purpose: To assess the reproducibility of CCS performed on four different computed tomography (CT) scanners, and compare the variability between two reconstruction algorithms, filtered back projection (FBP), and iterative reconstruction (IR).

Material And Methods: A CCS phantom was made from agar and contained 23 pieces of chicken bones. Read More

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http://dx.doi.org/10.1177/2058460120922147DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7218275PMC

Ancestral Resurrection and Directed Evolution of Fungal Mesozoic Laccases.

Appl Environ Microbiol 2020 Jul 2;86(14). Epub 2020 Jul 2.

Department of Biocatalysis, Institute of Catalysis and Petrochemistry, CSIC, Madrid, Spain

Ancestral sequence reconstruction and resurrection provides useful information for protein engineering, yet its alliance with directed evolution has been little explored. In this study, we have resurrected several ancestral nodes of fungal laccases dating back ∼500 to 250 million years. Unlike modern laccases, the resurrected Mesozoic laccases were readily secreted by yeast, with similar kinetic parameters, a broader stability, and distinct pH activity profiles. Read More

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http://dx.doi.org/10.1128/AEM.00778-20DOI Listing

Multidrug-resistant tuberculosis of lumbosacral spine producing extensive destruction with lumbosacral kyphosis.

BMJ Case Rep 2020 May 14;13(5). Epub 2020 May 14.

Department of Orthopedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India.

It is uncommon to get lumbosacral junction deformity due to tuberculosis. Lumbosacral junction alignment is of paramount importance in maintaining global sagittal balance. In this case report, we present a case of a 42-year-old woman with multidrug-resistant tuberculosis of lumbosacral spine with complete destruction of L3, L4 and L5 vertebra with partial destruction of L2 and S1 vertebra leading to significant shortening and lumbosacral kyphosis. Read More

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http://dx.doi.org/10.1136/bcr-2020-234246DOI Listing