Results 61 to 70 of about 8,606 (195)

A simple method to back-project isocenter dose of radiotherapy treatments using EPID transit dosimetry

Brazilian Journal of Radiation Sciences, 2017
The aim of this work was to implement a simple algorithm to evaluate isocenter dose in a phantom using the back-projected transmitted dose acquired using an Electronic Portal Imaging Device (EPID) available in a Varian Trilogy accelerator with two ...
Thiago Bernardino da Silveira, Bianca de Quadros Cerbaro, Luiz Antônio Ribeiro da Rosa   +2 more
doaj   +1 more source

Log file‐based patient‐specific quality assurance for MR‐guided radiation therapy with comprehensive motion management

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Patient‐Specific Quality Assurance (PSQA) for Elekta Unity MR‐Linac treatments delivered under Comprehensive Motion Management (CMM) is challenging because beam gating, unexpected interruptions, and split sub‐segments introduce delivery complexities that are not fully addressed by conventional quality assurance workflows.
Kai Yuan, Matthew Man‐hin Cheung, Louis Lee   +2 more
wiley   +1 more source

Dosimetric impact of aperture‐restricted VMAT on heart dose in breast cancer treated with regional nodal irradiation

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Volumetric modulated arc therapy (VMAT) is increasingly used for breast and chest wall (CW) treatment with regional nodal irradiation (RNI) because of its ability to sculpt dose around complex target volumes. However, VMAT can increase low‐dose radiation to surrounding normal tissues and particularly increase cardiac dose.
Anh Hong Duong, Mandeep Kaur, Sunil W. Dutta, Tsegawbizu Gebru, Jacob Adams, Mark Cicchino, Reshma Jagsi, Sheela Hanasoge, Oluwatosin Kayode, Eduard Schreibmann, Hania Al‐Hallaq, Matthew Thomas, Xiaofeng Yang, Shadab Momin, Justin Roper, Kirk Luca, Jie Ding   +16 more
wiley   +1 more source

Gamma failure rate statistics of pure EPID reconstruction, CBCT-guided EPID reconstruction and TPS simulation for thoracic Phantom shift.

, 2019
Gamma failure rate statistics of pure EPID reconstruction, CBCT-guided EPID reconstruction and TPS simulation for thoracic Phantom shift.
Yinghui Li (237776), Jinping Shi (2552869), Jinhan Zhu (4282141), Lixin Chen (300749), Xiaowei Liu (146283)   +4 more
core   +1 more source

Task‐based image quality and dosimetric validation of HyperSight CBCT for adaptive radiotherapy

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Cone‐beam computed tomography (CBCT) is increasingly used in adaptive radiotherapy (ART), yet the dosimetric accuracy and image quality of advanced CBCT imaging platforms—such as Halcyon HyperSight 4.0 (HH), which combines an upgraded detector panel with advanced iterative reconstruction, scatter‐correction, and metal‐artifact ...
Byungmoon Park, Taeyoon Kim, Kwan‐Woo Lee   +2 more
wiley   +1 more source

CacheQuote: Efficiently Recovering Long-term Secrets of SGX EPID via Cache Attacks

Transactions on Cryptographic Hardware and Embedded Systems, 2018
Intel Software Guard Extensions (SGX) allows users to perform secure computation on platforms that run untrusted software. To validate that the computation is correctly initialized and that it executes on trusted hardware, SGX supports attestation ...
Fergus Dall, Gabrielle De Micheli, Thomas Eisenbarth, Daniel Genkin, Nadia Heninger, Ahmad Moghimi, Yuval Yarom   +6 more
doaj   +1 more source

Preclinical feasibility of EPID‐based transit dosimetry for total body irradiation

Journal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Conventional extended‐distance total body irradiation (TBI) is commonly verified using point dosimeters, which provide limited spatial information and require additional handling during a prolonged treatment procedure. A portable charge‐coupled device (CCD)‐based electronic portal imaging device (EPID) positioned downstream of the ...
Tetsu Nakaichi, Hiroyuki Okamoto, Mitsuhiro Kon, Kazuki Takaso, Ako Aikawa, Satoshi Nakamura, Kotaro Iijima, Takahito Chiba, Hiroki Nakayama, Tomonori Goka, Hiroshi Igaki   +10 more
wiley   +1 more source

Australian Society of Medical Imaging and Radiation Therapy Image Registration in Radiation Therapy Position Paper

Journal of Medical Radiation Sciences, Volume 73, Issue 3, Page 345-351, September 2026.
The ASMIRT Image Registration Working Party outlines the critical role of radiation therapists in performing, assessing and documenting rigid and deformable image registration across treatment planning, delivery and adaptive workflows. The position paper emphasises consistent nomenclature, robust QA processes, strong collaboration with diagnostic ...
Tamara Barry, Huong Nguyen, Laurel Schmidt, Kate Stewart, Nigel Anderson   +4 more
wiley   +1 more source

Investigating the electronic portal imaging device for small radiation field measurements

Journal of Medical Physics, 2017
Purpose: With the advent of state-of-the-art treatment technologies, the use of small fields has increased, and dosimetry in small fields is highly challenging.
Arpita Agarwal, Nikhil Rastogi, K J Maria Das, S A Yoganathan, D Udayakumar, Shaleen Kumar   +5 more
doaj   +1 more source

Polynucleotides HPT‐Based Dermal Filler for Skin Rejuvenation: A Prospective Clinical Investigation

Journal of Cosmetic Dermatology, Volume 25, Issue 9, September 2026.
ABSTRACT Background Polynucleotides (PN)‐based dermal fillers are increasingly used for skin rejuvenation due to their biocompatibility and regenerative properties. Aims This study aimed to confirm the efficacy and safety of Plinest (Mastelli) in improving skin hydration of the face, neck, and décolleté over 4 months follow‐up.
Chiara Teramo, Andrea Mattioli, Carolina Prussia   +2 more
wiley   +1 more source