26 results match your criteria workflow seated

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Robotic colorectal surgery and ergonomics.

J Robot Surg 2021 Apr 22. Epub 2021 Apr 22.

Department of General Surgery, Prince of Wales Hospital, Sydney, NSW, Australia.

Improved ergonomics for the operating surgeon may be an advantage of robotic colorectal surgery. Perceived robotic ergonomic advantages in visualisation include better exposure, three-dimensional vision, surgeon camera control, and line of sight screen location. Postural advantages include seated position and freedom from the constraints of the sterile operating field. Read More

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Computer-Aided Crown Design Using Digital Scanning Technology for Immediate Postextraction Single-Implant Restorations Supported by Conical Indexed Abutments.

Int J Periodontics Restorative Dent 2021 Jan-Feb;41(1):135-140

Conical retention with antirotational features (Acuris abutment) has been recently proposed for restorations of healed single implants. The conometric abutments use the retentive force of the coping-abutment system to retain the prosthetic crown without the use of cement or screws. This retentive force must be overcome to obtain detachment of the relined provisional crown in immediate restorations. Read More

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February 2021

Analytical modeling of depth-dose degradation in heterogeneous lung tissue for intensity-modulated proton therapy planning.

Phys Imaging Radiat Oncol 2020 Apr 26;14:32-38. Epub 2020 May 26.

Department of Medical Physics in Radiation Oncology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany.

Background And Purpose: Proton therapy may be promising for treating non-small-cell lung cancer due to lower doses to the lung and heart, as compared to photon therapy. A reported challenge is degradation, , a smoothing of the depth-dose distribution due to heterogeneous lung tissue. For pencil beams, this causes a distal falloff widening and a peak-to-plateau ratio decrease, not considered in clinical treatment planning systems. Read More

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Using an e-Health Intervention to Reduce Prolonged Sitting in UK Office Workers: A Randomised Acceptability and Feasibility Study.

Int J Environ Res Public Health 2020 12 1;17(23). Epub 2020 Dec 1.

Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 3AF, UK.

Low-cost workplace interventions are required to reduce prolonged sitting in office workers as this may improve employees' health and well-being. This study aimed to assess the acceptability and feasibility of an e-health intervention to reduce prolonged sitting among sedentary UK-based office workers. Secondary aims were to describe preliminary changes in employee health, mood and work productivity after using an e-health intervention. Read More

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December 2020

Validation and practical implementation of seated position radiotherapy in a commercial TPS for proton therapy.

Phys Med 2020 Dec 11;80:175-185. Epub 2020 Nov 11.

Seattle Cancer Care Alliance Proton Therapy Center, 1570 N 115th St., Seattle, WA 98133, United States; Departments of Radiation Oncology, University of Washington School of Medicine, 1959 NE Pacific St., Seattle, WA 98195, United States. Electronic address:

Purpose: This work aims to validate new 6D couch features and their implementation for seated radiotherapy in RayStation (RS) treatment planning system (TPS).

Materials And Methods: In RS TPS, new 6D couch features are (i) chair support device, (ii) patient treatment option of "Sitting: face towards the front of the chair", and (iii) patient support pitch and roll capabilities. The validation of pitch and roll was performed by comparing TPS generated DRRs with planar x-rays. Read More

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December 2020

Monitor-based exoscopic 3D4k neurosurgical interventions: a two-phase prospective-randomized clinical evaluation of a novel hybrid device.

Acta Neurochir (Wien) 2020 12 19;162(12):2949-2961. Epub 2020 May 19.

Department of Neurosurgery, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany.

Background: Promoting a disruptive innovation in microsurgery, exoscopes promise alleviation of physical strain and improved image quality through digital visualization during microneurosurgical interventions. This study investigates the impact of a novel 3D4k hybrid exoscope (i.e. Read More

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December 2020

Development of an isocentric rotating chair positioner to treat patients of head and neck cancer at upright seated position with multiple nonplanar fields in a fixed carbon-ion beamline.

Med Phys 2020 Jun 18;47(6):2450-2460. Epub 2020 Apr 18.

Key Laboratory of Radiation Physics and Technology of Ministry of Education, College of Physics of Sichuan University, Chengdu, China.

Purpose: An isocentric rotating chair for a positioner was developed as a nongantry solution to provide multiple nonplanar radiation fields with a maximum tilt of 20 for treating head and neck cancer patients at an upright seated position in a fixed carbon-ion beamline.

Methods: The preclinical validation of the chair was present for this study funded by a grant through the Shanghai Proton and Heavy Ion Center (SPHIC) in Shanghai, China. The chair was installed in SPHIC. Read More

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A simplified approach for anaesthetic management of diagnostic procedures in children with anterior mediastinal mass.

Singapore Med J 2020 Jun 4;61(6):308-311. Epub 2019 Nov 4.

Haematology/Oncology Service, KK Women's and Children's Hospital, Singapore.

Introduction: Children with an anterior mediastinal mass (AMM) need general anaesthesia (GA) or deep sedation for diagnostic procedures more often than adult patients. Anaesthetic management to prevent such complications includes maintenance of spontaneous ventilation (SV) and prebiopsy corticosteroids/radiotherapy.

Methods: We reviewed the medical records of children with AMM who were brought to the operating theatre for diagnostic procedures (prior to chemotherapy) between 2001 and 2013. Read More

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Peri-Implant Soft Tissue Conditioning by Means of Customized Healing Abutment: A Randomized Controlled Clinical Trial.

Materials (Basel) 2019 Sep 19;12(18). Epub 2019 Sep 19.

Department of oral surgery, Fondazione Policlinico Ca' Granda, 20141 Milan, Italy.

Introduction: An optimal aesthetic implant restoration is a combination of a visually pleasing prosthesis and adequate surrounding peri-implant soft tissue architecture. This study describes a novel workflow for one-step formation of the supra-implant emergence profile.

Materials And Methods: Two randomized groups were selected. Read More

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September 2019

The evaluation of an ambulance rear compartment using patient simulation: Issues of safety and efficiency during the delivery of patient care.

Appl Ergon 2019 Nov 18;81:102872. Epub 2019 Jun 18.

Emergency Medical Services, Alberta Health Services, Canada.

The purpose of this study was to evaluate the safety and efficiency of a specific ambulance while providers delivered basic and advanced life support. Forty-eight, Emergency Medical Service (EMS) teams were observed delivering care to a simulated patient during an anaphylaxis scenario in a moving ambulance that contained a complete compliment of medical supplies and equipment. A detailed coding system was developed and applied to the audio and video behavioural data. Read More

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November 2019

Fracture load of three-unit full-contour fixed dental prostheses fabricated with subtractive and additive CAD/CAM technology.

Clin Oral Investig 2020 Feb 8;24(2):1035-1042. Epub 2019 Jul 8.

Division of Computerized Restorative Dentistry, Clinic for Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine, University of Zurich, Plattenstrasse 11, CH-8032, Zurich, Switzerland.

Objectives: The aim of this study was to test the fracture load of ceramic and composite three-unit full-contour fixed dental prostheses (FDPs) fabricated with additive and subtractive computer-aided design (CAD)/computer-aided manufacturing (CAM) technology.

Materials And Methods: A newly developed alveolar socket replica model for a three-unit FDP replacing one molar was used in this study. Five CAD/CAM materials were used for fabrication of three-unit FDPs (each n = 12). Read More

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February 2020

Numerical workflow of irreversible electroporation for deep-seated tumor.

Phys Med Biol 2019 03 7;64(5):055016. Epub 2019 Mar 7.

INRIA Bordeaux-Sud-Ouest, CNRS, Bordeaux INP, Univ. Bordeaux, IMB, UMR 5251, F-33400, Talence, France.

The paper provides a numerical workflow, based on the 'real-life' clinical workflow of irreversible electroporation (IRE) performed for the treatment of deep-seated liver tumors. Thanks to a combination of numerical modeling, image registration algorithm and clinical data, our numerical workflow enables to provide the distribution of the electric field as effectively delivered by the clinical IRE procedure. As a proof of concept, we show on a specific clinical case of IRE ablation of liver tumor that clinical data could be advantageously combined to numerical simulations in a near future, in order to give to the interventional radiologists information on the effective IRE ablation. Read More

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Dynamic Strategic Bond Analysis Yields a Ten-Step Synthesis of 20-nor-Salvinorin A, a Potent κ-OR Agonist.

ACS Cent Sci 2017 Dec 13;3(12):1329-1336. Epub 2017 Dec 13.

Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States.

Salvinorin A (SalA) is a plant metabolite that agonizes the human -opioid receptor (κ-OR) with high affinity and high selectivity over and opioid receptors. Its therapeutic potential has stimulated extensive semisynthetic studies and total synthesis campaigns. However, structural modification of SalA has been complicated by its instability, and efficient total synthesis has been frustrated by its dense, complex architecture. Read More

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December 2017

The conversational position in endoscopic pituitary surgery.

Br J Neurosurg 2018 Feb 4;32(1):44-46. Epub 2017 Dec 4.

a National Hospital for Neurology and Neurosurgery , London , UK.

We describe a novel patient position for endoscopic transphenoidal surgery - the 'conversational position'. This position is a safe and effective alternative to the standard supine position, incorporating a semi-sitting position with the additional innovation of achieving a 'conversational position' by flexing the neck and turning the patient's head turned to face the surgeon. The 'conversational' position offers improvements in the surgical approach to sellar region, addressing specific intraoperative challenges such as maintaining a bloodless operative field, and enabling more intuitive and ergonomic surgical workflow. Read More

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February 2018

Introduction of a Horizontal and Vertical Split Flow Model of Emergency Department Patients as a Response to Overcrowding.

J Emerg Nurs 2018 Jul 21;44(4):345-352. Epub 2017 Nov 21.

Palo Alto, CA.

Introduction: ED overcrowding is an issue that is affecting every emergency department and every hospital. The inability to maintain patient flow into and out of the emergency department paralyzes the ability to provide effective and timely patient care. Many solutions have been proposed on how to mitigate the effects of ED overcrowding. Read More

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[A pilot clinical study of immediate provisionalization with a chairside computer aided design and computer aided manufacture monolithic crown for single tooth immediate implant placement].

Zhonghua Kou Qiang Yi Xue Za Zhi 2017 Jan;52(1):3-9

Department of Implantology, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

To evaluate the primary clinical outcomes of immediate provisionalization with a monolithic crown utilizing a novel chairside computer aided design and computer aided manufacture (CAD/CAM) workflow for single tooth immediate implant placement. This pilot study was a prospective within-subjects design. Thirteen consecutive patients were included and diagnosed with untreatable single incisor or premolar with fine general and local anatomical conditions. Read More

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January 2017

Utilizing personalized stereotactic frames for laser interstitial thermal ablation of posterior fossa and mesiotemporal brain lesions: a single-institution series.

Neurosurg Focus 2016 Oct;41(4):E4

Department of Neurological Surgery, and.

OBJECTIVE The precision of laser probe insertion for interstitial thermal therapy of deep-seated lesions is limited by the method of stereotactic guidance. The objective of this study was to evaluate the feasibility of customized STarFix 3D-printed stereotactic platforms to guide laser probe insertion into mesiotemporal and posterior fossa targets. METHODS The authors conducted a retrospective review of 5 patients (12-55 years of age) treated with laser interstitial thermal therapy (LITT) in which STarFix platforms were used for probe insertion. Read More

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October 2016

A digital approach for one-step formation of the supra-implant emergence profile with an individualized CAD/CAM healing abutment.

J Prosthodont Res 2016 Jul 9;60(3):220-3. Epub 2016 Feb 9.

Department of Reconstructive Dentistry & Gerodontology, School of Dental Medicine, University of Bern, Switzerland.

Purpose: This Technical Procedure describes a novel workflow for a one-step formation of the supra-implant emergence profile in the esthetic zone - the 'Digitally Flip Technique' (DFT).

Methods: After implant placement, a post-operative intra-oral optical scan (IOS) was performed to capture the final three-dimensional implant position. Based on the superimposition of the digitally slice-wise DICOM-segmentation of the digitally flipped (mirrored) contra-lateral tooth and the STL-file of the IOS, an individualized healing abutment was CAD/CAM-fabricated out of PMMA-based restoration material in a fully digital workflow and seated at the stage of reopening surgery. Read More

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One-step reconstruction with a 3D-printed, biomechanically evaluated custom implant after complex pelvic tumor resection.

Comput Aided Surg 2015 20;20(1):14-23. Epub 2015 Aug 20.

b Mobelife NV , Leuven , Belgium.

Resection of a pelvic tumor is challenging because of its complex three-dimensional (3D) anatomy and deep-seated location with nearby vital structures. The resection is technically demanding if a custom implant is used for reconstruction of the bone defect as the surgeon needs to ensure the resection margin is sufficiently wide and the orientation of intended resection planes must match that of the custom implant. We describe a novel workflow of performing a partial acetabular resection in a patient with pelvic chondrosarcoma and reconstruction with a custom pelvic implant in a one-step operation. Read More

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Live ultrasound volume reconstruction using scout scanning.

Proc SPIE Int Soc Opt Eng 2015 Feb;9415

Queen's University, Kingston, Canada.

Introduction: Ultrasound-guided interventions often necessitate scanning of deep-seated anatomical structures that may be hard to visualize. Visualization can be improved using reconstructed 3D ultrasound volumes. High-resolution 3D reconstruction of a large area during clinical interventions is challenging if the region of interest is unknown. Read More

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February 2015

Adaptable healing patient room for stroke patients. A staff evaluation.

Methods Inf Med 2014 23;53(5):406-15. Epub 2014 May 23.

Elke M. L. Daemen, Philips Research, Philips Electronics Netherlands, High Tech Campus 34, Eindhoven, The Netherlands, E-mail:

Introduction: This article is part of the focus theme of Methods of Information in Medicine on "Pervasive Intelligent Technologies for Health".

Background: This paper addresses the evaluation with hospital staff of an in-patient environment that supports patients, family, nursing staff and medical specialists during the recovery process of neurology patients and especially patients recovering from a stroke. We describe the methods that were used to evaluate the Adaptive Daily Rhythm Atmospheres (ADRA), Artificial Skylight (AS) and Adaptive Stimulus Dosage (ASD) concepts. Read More

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September 2016

Examination of How and Why Over-the-Bed Tables Are Used: Use Cases and Needs from Healthcare Providers.

HERD 2014 ;7(2):104-26

CORRESPONDING AUTHOR: Dr. Johnell O. Brooks, Assistant Professor, Clemson University International Center for Automotive Research, 4 Research Dr., Greenville, SC 29607; (864) 283-7272.

Objective: This article presents the results of an exploratory study in which 14 clinical and staff subject matter experts (SMEs) at a regional rehabilitation hospital were interviewed in order to understand how and why over-the-bed tables are used.

Background: It is important to understand how and why a device or environment is used when designing it, and not just what features and functions are preferred. This knowledge is valuable both for contextualizing user feature and function preferences and for characterizing and prioritizing design challenges and opportunities. Read More

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November 2016

Robotic autopositioning of the operating microscope.

Neurosurgery 2014 Jun;10 Suppl 2:214-9; discussion 219

*Division of Neurological Surgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona; ‡Medtronic Navigation, Inc., Louisville, Colorado; §Carl Zeiss Meditec, Inc., Oberkochen, Germany.

Background: Use of the operating microscope has become pervasive since its introduction to the neurosurgical world. Neuronavigation fused with the operating microscope has allowed accurate correlation of the focal point of the microscope and its location on the downloaded imaging study. However, the robotic ability of the Pentero microscope has not been utilized to orient the angle of the microscope or to change its focal length to hone in on a predefined target. Read More

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The reproduction of implants and prepared teeth in one final master cast: a case report.

Int J Prosthodont 2013 Jan-Feb;26(1):51-3

Department of Prosthodontics, Justus-Liebig-University, Giessen, Germany.

This case report describes a method to produce one final master cast for the simultaneous prosthetic treatment of implants and natural teeth in a single arch. After tooth preparation, a first impression was used to fabricate electroformed crown frameworks. In the next appointment, the crown frameworks were seated and collected with the implant transfer copings in a single-phase fixation impression, which was used to fabricate a final master cast. Read More

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Stereoelectroencephalography: surgical methodology, safety, and stereotactic application accuracy in 500 procedures.

Neurosurgery 2013 Mar;72(3):353-66; discussion 366

Claudio Munari Centre for Epilepsy and Parkinson Surgery, Niguarda Ca' Granda Hospital, Milano, Italy.

Background: Stereoelectroencephalography (SEEG) methodology, originally developed by Talairach and Bancaud, is progressively gaining popularity for the presurgical invasive evaluation of drug-resistant epilepsies.

Objective: To describe recent SEEG methodological implementations carried out in our center, to evaluate safety, and to analyze in vivo application accuracy in a consecutive series of 500 procedures with a total of 6496 implanted electrodes.

Methods: Four hundred nineteen procedures were performed with the traditional 2-step surgical workflow, which was modified for the subsequent 81 procedures. Read More

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High-quality multimodal volume rendering for preoperative planning of neurosurgical interventions.

IEEE Trans Vis Comput Graph 2007 Nov-Dec;13(6):1696-703

VRVis Research Center.

Surgical approaches tailored to an individual patient's anatomy and pathology have become standard in neurosurgery. Precise preoperative planning of these procedures, however, is necessary to achieve an optimal therapeutic effect. Therefore, multiple radiological imaging modalities are used prior to surgery to delineate the patient's anatomy, neurological function, and metabolic processes. Read More

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December 2007
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