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Results for "source array": 14 found

Asymmetrical High Performance Brain Dedicated PET System: Design Optimization and Performance Evaluation

Authors: Yuemeng Feng, Hamid Sabet

Affiliation: Massachusetts General Hospital, Harvard Medical School

Abstract Preview: Purpose: We propose a novel brain-dedicated PET system comprising elliptical cylinder with a neck cut-out, supplemented by front and back panels to improve sensitivity and line-of-response sampling. T...

BEST IN PHYSICS IMAGING: Volumetric Sampling Properties of Longitudinal Multiple X-Ray-Source Array Computed Tomography (MXA-CT)

Authors: Craig K Abbey, John M. Boone, Richard E. Colbeth, Andrew M. Hernandez, Vance Robinson, Paul Schwoebel, Jeffrey H. Siewerdsen, Alejandro Sisniega, Wojciech B. Zbijewski, Huanyi Zhou

Affiliation: UC Santa Barbara, University of California, UT MD Anderson Cancer Center, Johns Hopkins University, University of New Mexico Albuquerque, UC Davis Health, Varex Imaging Corporation

Abstract Preview: Purpose: A new CT configuration utilizing a multiple X-ray-source array (MXA) is under development to mitigate cone-beam (CB) artifacts in single-rotation wide coverage imaging. We investigate the sam...

Clinical Implementation of a Film Based Psqa System for SBRT on a 1.5T MR-Linac

Authors: Dylan Yamabe Breitkreutz, Lee Chin, Brige P. Chugh, Mark D'Souza, Brian M. Keller, Anthony Kim, Michelle K. Nielsen, Arjun Sahgal

Affiliation: Sunnybrook Health Sciences Centre

Abstract Preview: Purpose: The Elekta Unity MR-linac delivers highly conformal SBRT treatments using IMRT. These treatment plans require patient-specific quality assurance (PSQA) measurements to detect discrepancies be...

Development of Cross-Platform Application for Radiation Contamination Assessment

Authors: Wesley E. Bolch, Lotem Buchbinder Shadur, Natalia Estefania Carrasco-Rojas, Chansoo Choi, Robert Joseph Dawson, Shaheen Dewji, John Francis, Emmanual Mate-Kole, Wyatt Smither, Yitian Wang

Affiliation: Georgia Tech, University of Florida, Nuclear and Radiological Engineering and Medical Physics Programs, Georgia Institute of Technology

Abstract Preview: Purpose: Develop a software application capable of assessing the radiation contamination of military service members and members of the general public for fast, on-site radiological triage. The softwa...

Development of a Cadmium Zinc Telluride (CdZnTe) Detector-Based Neutron Imaging System

Authors: Soo Hyun Byun, Troy Farncombe, Edcer Jerecho DC Laguda

Affiliation: McMaster University

Abstract Preview: Purpose: We present the adaptation of a Cadmium Zinc Telluride (CdZnTe) detector, initially designed for SPECT-MR applications, to neutron imaging. This study explores a novel technique that utilizes ...

Development of a High-Speed Digital Breast Tomosynthesis System with a Two-Dimensional Multiple X-Ray-Source Array

Authors: John M. Boone, Andrew M. Hernandez, Paul Schwoebel, Jeffrey H. Siewerdsen, Alejandro Sisniega, Wojciech B. Zbijewski

Affiliation: Johns Hopkins University, University of California, UT MD Anderson Cancer Center, University of New Mexico Albuquerque, UC Davis Health

Abstract Preview: Purpose: To significantly improve image quality relative to clinically deployed digital breast tomosynthesis (DBT) systems, which use a 1D acquisition geometry (an arc), with a 2D image acquisition ge...

Dose Distribution Analysis for Different Geometries of a Multiple-X-Ray Source Array (MXA) CT Scanner

Authors: Craig K Abbey, John M. Boone, Richard E. Colbeth, Andrew M. Hernandez, Vance Robinson, Paul Schwoebel, Jeffrey H. Siewerdsen, Alejandro Sisniega, Wojciech B. Zbijewski, Huanyi Zhou

Affiliation: UC Santa Barbara, University of California, UT MD Anderson Cancer Center, Johns Hopkins University, University of New Mexico Albuquerque, UC Davis Health, Varex Imaging Corporation

Abstract Preview: Purpose: A Multiple-X-ray Source Array (MXA) for CT (MXA-CT) is under development to mitigate cone beam artifacts in axial CT scans using wide collimation. The purpose of this study is to assess the i...

Dosimetry for Low Energy Electrons and Their Potential Use in Radiotherapy

Authors: Christoph Bert, Leon Brückner, Luitpold Distel, Julian Freier, Peter Hommelhoff, Bastian Löhrl

Affiliation: Department of Radiation Oncology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Department Physik, Friedrich-Alexander Universität Erlangen-Nürnberg

Abstract Preview: Purpose: Low energy electron (LEE) bunches in the kilo electronvolt (keV) range are thought to have a high relative biological effectiveness (RBE). To investigate this, it is necessary to establish re...

Inverse Geometry Photon Counting CBCT

Authors: Saree Alnaghy, Owen Thomas Dillon, Sean P Hood, Paul J. Keall, Ricky O'Brien, Tess Reynolds

Affiliation: Image X Institute, Faculty of Medicine and Health, The University of Sydney, University of Wollongong, Medical Radiations, School of Health and Biomedical Sciences, RMIT University

Abstract Preview: Purpose: Photon Counting Detectors (PCDs) have been demonstrated to improve resolution, contrast and lesion detectability in fan-beam CT. There is naturally a desire to bring these improvements to Con...

Multiple x-Ray Source Array (MXA) System Development for Better Ray Sampling in Large Coverage Axial CT Imaging

Authors: Craig K Abbey, John M. Boone, Richard E. Colbeth, Andrew M. Hernandez, Sarah E. McKenney, Vance Robinson, Paul Schwoebel, Jeffrey H. Siewerdsen, Alejandro Sisniega, Wojciech B. Zbijewski

Affiliation: UC Santa Barbara, University of California, UT MD Anderson Cancer Center, Johns Hopkins University, University of New Mexico Albuquerque, UC Davis Health, Varex Imaging Corporation

Abstract Preview: Purpose:
While wide coverage (160 mm) CT scanners can image whole organs (e.g. heart, brain, kidneys, etc.) in one axial scan, the peripheral regions of the field of view (along z) suffer from cons...

Novel 915 MHz Annular Phased Array Applicator for Hyperthermia Treatment of Brain Lesions

Authors: Jason Ellsworth, Mark Mishra, Jason K Molitoris, Lei Ren, Dario B. Rodrigues, Paul Turner, Graeme Woodworth

Affiliation: University of Maryland School of Medicine, Department of Neurosurgery, University of Maryland School of Medicine, University of Maryland, Department of Radiation Oncology, University of Maryland School of Medicine, Pyrexar Medical

Abstract Preview: Purpose: Hyperthermia therapy (HT) involves increasing tumor temperatures to 40-44°C and is a potent radio- and chemosensitizer for treating solid tumors. Current clinical strategies to heat deep-seat...

Novel Design for a Mechanically Tunable Ceramic Volume Resonator for 9.4T Pre-Clinical MRI

Authors: Victor B. Kassey, Maciej M. Kmiec, Periannan Kuppusamy, Ryan C. O'Connell, Sergey V. Petryakov, Conner Ubert

Affiliation: Dartmouth College

Abstract Preview: Purpose: High-resolution magnetic field uniformity is essential for quantitative and pre-clinical MRI research. Imaging uniformity is affected by the B0 field, which can be corrected using manual or a...

Prototype Two-Dimensional Multi-X-Ray-Source Array (2D MXA) for Digital Breast Tomosynthesis

Authors: Paul Schwoebel

Affiliation: University of New Mexico Albuquerque

Abstract Preview: N/A...

Real-Time 3D Visualization of Electric Field with Electroacoustic Tomography

Authors: Jadon O Buller, Yankun Lang, Liangzhong Xiang, Andrea Paulina Yanez

Affiliation: University of Maryland School of Medicine, University of California, Irvine

Abstract Preview: Purpose: With the widespread adoption of electroporation, there is growing interest in deep-tissue electric field monitoring. Electroporation therapy ablates target regions by generating electric fiel...