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Results for "aapm 132": 19 found

A 3D Printed Ion Chamber Insert Solution for Absolute Dosimetry with Varying Ionisation Chambers in Radiosurgery.

Authors: Shashanksharad Kale, Gopishankar Natanasabapathi, Daya Nand Kishore Sharma

Affiliation: All India Institute of Medical Sciences (AIIMS), Department of Radiation Oncology, All India Institute of Medical Sciences

Abstract Preview: Purpose:
The study demonstrates a novel 3D printing method to fabricate an ion chamber insert (ICI) for absolute dosimetry purpose in gamma knife radiosurgery (GKRS).
Methods:
Our institute u...

An International Survey of High Dose Rate Brachytherapy Dosimetry Practices

Authors: Anna Becker, Tomislav Bokulic, Mauro Carrara, Krzysztof Chelminski, Larry A. DeWerd, Alexis Dimitriadis, Benjamin Kellogg, Malcolm R. McEwen, Zakithi L.M Msimang, Mark J. Rivard, Thorsten Sander, Thorsten Schneider, Jamema Swamidas, Egor Titovich, Paula Toroi, Carlos E. de Almeida, Jacco de Pooter, Liset de la Fuente Rosales, Deborah G. van der Merwe

Affiliation: Radiation and Nuclear Safety Authority, University of Zagreb, National Physical Laboratory, IAEA, Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin - Madison, Rio de Janeiro State University, Dosimetry Laboratory, Dosimetry and Medical Radiation Physics Section, Division of Human Health, International Atomic Energy Agency, Physikalisch-Technische Bundesanstalt, National Metrology Institute, University of the Witwatersrand, Dosimetry and Medical Radiation Physics Section, Division of Human Health, International Atomic Energy Agency, National Research Council, Warren Alpert Medical School of Brown University

Abstract Preview: Purpose: The recently published IAEA-TRS-492 international code of practice (CoP) aims at improving traceability, accuracy, and consistency in Brachytherapy Dosimetry. To assess current approaches to ...

Analyzing Backlight Runtime and Corresponding Performance in Diagnostic Displays

Authors: James Ward, Anzi Zhao

Affiliation: Northwestern Medicine

Abstract Preview: Purpose: This study investigates the correlation between the backlight runtime in diagnostic displays and their corresponding performance, which may aid in making informed decisions regarding the timi...

Characterization of a Prototype Flashdiamond Detector for Conventional and Uhdr Beams

Authors: Dominique Guillet, Arthur Lalonde, Bryan R. Muir, James Renaud, Karim Zerouali

Affiliation: Universite de Montreal, Centre Hospitalier de l'Universite de Montreal, National Research Council

Abstract Preview: Purpose:
To evaluate the dose rate dependence, beam quality dependence, and short-term stability of a novel flashDiamond (fD) prototype detector for conventional and ultra-high dose rate (UHDR) bea...

Commissioning of an AI-Assisted Tool for Enhancing Post-Radiosurgery Follow-up in Multiple Brain Metastases Patients

Authors: Rex Carden, Carlos E. Cardenas, Ho-hsin Rita Chang, John B Fiveash, Heinzman A. Katherine, Yogesh Kumar, Gaurav Nitin Rathi, Richard A. Popple, Kayla Lewis Steed

Affiliation: University of Alabama at Birmingham

Abstract Preview: Purpose: Brain metastases (BMs) often require multiple radiotherapy (RT) courses as new lesions appear. Comparing follow-up imaging with prior RT plans is time-intensive. We developed an AI tool that ...

Dosimetric Variations Induced By Inaccurate Collimator Angles in Single-Isocenter SRS Plan for Multi-Lesion Brain Metastases

Authors: Makunda Aryal, Gregory Bartlett, David D. Campos, Ke Colin Huang, Sook Kien Ng, Christopher F. Njeh, Oluwaseyi Oderinde, Edwin Quashie, Ashok Tiwari, Yong Yue

Affiliation: Purdue University, Department of Radiation Oncology, Indiana University, Indiana University, Indiana University School of Medicine, Department of Radiation Oncology

Abstract Preview: Purpose:
Linear accelerator-based single-isocenter Stereotactic Radiosurgery (SRS) is widely used for treating brain metastases due to its efficiency, reduced treatment time, and lower imaging dose...

Enhance Four-Dimension Cone-Beam Computed Tomography (4D-CBCT) from Sparse Views Using a Novel Deep Learning Model

Authors: Lei Ren, Jie Zhang

Affiliation: University of Maryland School of Medicine

Abstract Preview: Purpose: 4D-CBCT is valuable for imaging anatomy affected by respiratory motions to guide radiotherapy delivery. However, 4D-CBCT often has undersampled projections acquired in each respiratory phase ...

Enhanced Predictive Model for Toxicity and 3-Year Survival in HCC Patients Using Learning Health System Infrastructure and AI-Driven Statistical Profiling

Authors: Ameer Elaimy, Theodore Lawrence, Charles S. Mayo, Seyyedeh Azar Oliaei Motlagh, Benjamin S. Rosen

Affiliation: University of Michigan

Abstract Preview: Purpose: To analyze the impact of clinical features on short-term survival, toxicity, and poor outcomes in HCC patients treated with SBRT,using automated data aggregation and enhanced algorithms with ...

Evaluation of Deformable Image Registration Accuracy Used in MR-Only Ventilation Mapping

Authors: Fei Han, James M. Lamb, Michael Vincent Lauria, Daniel A. Low, Tessa Elizabeth Maurer, Danilo Maziero, Claudia R. Miller, Drew Moghanaki, Louise Naumann, Nicolas Viot

Affiliation: Department of Radiation Oncology, University of California, Los Angeles, Siemens Healthineers, UCLA, University of California Los Angeles

Abstract Preview: Purpose: Patients with lung disease outside radiotherapy are barred from high dose protocols used for motion modeling, but MRI could offer no-dose alternatives. Image-based ventilation is a promising ...

Failure Mode and Effects Analysis (FMEA) on Use of Surface Guided Imaging

Authors: Victoria Noelle Bry, Tamara Egan, Eric C. Ford, Angelia Landers, Juergen Meyer

Affiliation: Fred Hutch Cancer Center, University of Washington, Department of Radiation Oncology, Fred Hutchinson Cancer Center, University of Washington, University of Washington

Abstract Preview: Purpose: Surface guided radiation therapy (SGRT) can improve patient safety, however, its complex integration may expose processes to increased risk of error. This work identifies potential failures f...

Geographic Disparities in Medical Physics Training and Employment: Implications for Rural Workforce Recruitment

Authors: Seth Amofa, Erli Chen, Samuel A. Einstein, Ekinadoese Imudia Frias, Nupur Karmaker, Yinus Kawthara, Dulguun Myagmarsuren, Travis C. Salzillo, Joseph Weygand, Afua A. Yorke

Affiliation: Department of Radiation Oncology and Applied Science, Dartmouth Health, University of Washington, Federal University Oye-Ekiti, Cheshire Medical Center, Dartmouth College, Penn State College of Medicine, Dept. of Medical Physics and Biomedical Engineering, Gono Bishwabidyalay, Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Virginia Tech Carilion School of Medicine

Abstract Preview: Purpose: Recent developments in the medical physics job market have made it increasingly difficult for radiotherapy centers, particularly in rural areas, to recruit qualified therapeutic medical physi...

Global Needs Assessment of Medical Physicists Working in Low-and-Middle-Income Countries

Authors: Stephen M. Avery, Izabella L. Barreto, Oi-Wai Chau, Cesar Della Biancia, Beata Gontova Bernat, Amanda M. Jackson, Rao Khan, Eugene P. Lief, Osama R. Mawlawi, Wilfred F. Ngwa, Christopher F. Njeh, Peter Allan Sandwall, William Swanson, Joseph Weygand, Afua A. Yorke

Affiliation: Department of Medical Physics, Memorial Sloan Kettering Cancer Center, VA Medical Center, Johns Hopkins University, Mayo Clinic, Champion Cancer Center, Howard University, UT MD Anderson Cancer Center, Department of Radiation Oncology and Applied Science, Dartmouth Health, University of Washington, University of Florida College of Medicine, Washington University in St Louis, Emory University, University of Pennsylvania, OhioHealth, Indiana University School of Medicine, Department of Radiation Oncology

Abstract Preview: Purpose: To assess needs of medical physicists working in low-and-middle-income countries (LMICs)
Methods: A survey was developed by AAPM’s Global Needs Assessment Committee (GNAC) in partnership w...

Growing As Leaders Together – Results from the Medical Physics Leadership Academy Fundamentals of Leadership Cohort Program

Authors: Ashley Cetnar, Emily Y. Hirata, Cassandra Stambaugh

Affiliation: University of California San Francisco, Tufts Medical Center, The Ohio State University - James Cancer Hospital

Abstract Preview: Purpose: To provide results from the first four years of the Medical Physics Leadership Academy (MPLA) Fundamental of Leadership Cohort program
Methods: The MPLA Cohorts program began with the Fund...

Large Scale Deployment of a Tailored and Hybrid Educational Strategy for Wartime Capacity Building: Aapm/HUG/Uamp Initiative to Transition Ukraine from Co-60 to IMRT through a Comprehensive Medical Physics Training Program

Authors: Victoria Susan Ainsworth, Stephen M. Avery, Serhii Brovchuk, Thomas Brown, Sean A. Dresser, Matthew D. Goss, Viktor M. Iakovenko, Kelly Kisling, Nataliya Kovalchuk, Robert F. Krauss, Wilfred F. Ngwa, Jatinder R. Palta, Julie A. Raffi, Peter Allan Sandwall, Natalka Suchowerska, William Swanson, Shada J. Wadi-Ramahi, Ruslan Zelinskyi

Affiliation: Allegheny Hospital, Johns Hopkins University, Virginia Commonwealth University, Stanford University, O.O. Shalimov National Institute of Surgery and Transplantology, Department of Radiation Oncology, UT Southwestern Medical Center, School of Physics, The University of Sydney, MaineHealth, University of California, San Diego, Duke University, Emory University, University of Pennsylvania, University of Pittsburgh Medical Center, Medical Physics Department, Medical center of Yuriy Spizhenko, OhioHealth, University of Massachusetts Lowell, St. Francis Hospital

Abstract Preview: Purpose: The AAPM International Council, in collaboration with Help Ukraine Group (HUG) and Ukrainian Association of Medical Physicists (UAMP), developed a novel hybrid year-long training course to as...

Minimizing Positioning Errors in Intracranial SRS: The Role of Verification Imaging after 6-Dof Corrections

Authors: Anthony J. Doemer, Yimei Huang, Benjamin Movsas, Ellen Park, Mira Shah, Salim Siddiqui, Karen C. Snyder, Kundan S Thind, Bo Zhao

Affiliation: Henry Ford Health

Abstract Preview: Purpose: The 6 degrees-of-freedom (6-DoF) robotic couch is considered essential for linac-based stereotactic radiosurgery (SRS), particularly for irregularly shaped targets adjacent to critical organs...

Prospective Organ-Level Dose Estimation in CT Imaging Using Scout-Net: A Comparison with Established Methods

Authors: Maria Jose Medrano, Grant Stevens, Liyan Sun, Justin Ruey Tse, Adam S. Wang, Sen Wang

Affiliation: Department of Radiology, Stanford University, GE HealthCare, Stanford University

Abstract Preview: Purpose: Patient exposure to ionizing radiation is a major concern in CT imaging. Size-specific dose estimation methods can prospectively estimate organ-level radiation doses based on patient sizes an...

Support for Radiotherapy in Ukraine: Help Ukraine Group Activities and the Importance of International Collaboration

Authors: Serhii Brovchuk, Viktor M. Iakovenko, Nataliya Kovalchuk, Yuliia Lozko, Zoia Shepil, Natalka Suchowerska, Ruslan Zelinskyi

Affiliation: Kyiv Regional Oncology Dispensary, Stanford University, O.O. Shalimov National Institute of Surgery and Transplantology, School of Physics, The University of Sydney, Medical Physics Department, Medical center of Yuriy Spizhenko, Department of Radiation Oncology, UT Southwestern Medical Center, Stanford Cancer Center

Abstract Preview: Purpose: The full-scale russian invasion of Ukraine has caused the largest humanitarian disaster in Europe since World War II. This study identifies gaps in RT services caused by the war and outlines ...

Two's Company, Three's a Crowd? a Bayesian Approach to Optimizing the Number of Measurement Readings in Radiation Therapy QA

Authors: Siyong Kim, Ava Paek, Joseph B. Schulz, James J. Sohn, Eric D. Stolen, Ethan D. Stolen

Affiliation: Department of Radiation & Cellular Oncology, University of Chicago, University of Central Florida, Virginia Commonwealth University, Department of Radiation and Cellular Oncology, University of Chicago, Department of Radiation Oncology, Stanford University School of Medicine

Abstract Preview: Purpose: The American Association of Physicists in Medicine Task Group 142 (AAPM TG-142) guidelines recommend three measurements during monthly quality assurance to keep results within two standard de...

Validation of Synthetic CT-Based Online Monitoring for Adaptive Proton Therapy

Authors: Ozgur Ates, Chin-Cheng Chen, Chia-Ho Hua, Matthew J. Krasin, Thomas E. Merchant

Affiliation: St. Jude Children's Research Hospital

Abstract Preview: Purpose: To validate the use of synthetic CTs generated from CBCT images for online monitoring, ensuring accurate and reliable daily plan quality assessments in adaptive proton therapy (APT).
Metho...