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Akademický článek

Analyzing the patient isocenter positional accuracy with portal imaging acquired at different gantry angles and its dosimetrical impact on the dose delivery for head and neck cancers

Autor: Bharath Pandu, D Khanna, Mohandass Palanisamy, Saro Jacob, Tatarao Maddipati

Publikováno v: Precision Radiation Oncology, Vol 8, Iss 2, Pp 77-84 (2024)

Abstract Objective This study aimed to analyze the effect of different gantry angles on portal imaging in terms of isocenter shifts and their dosimetric impact on dose delivery. Methods Thirty patients with head and neck cancers were prospectively se

Externí odkaz: https://doaj.org/article/425cfa2601534775be80181f602d4ac0

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Akademický článek

A multi-institutional trial evaluating the use of an integrated quality assurance phantom for frameless single-isocenter multitarget stereotactic radiosurgery

Autor: Dante P. I. Capaldi, Lawrie B. Skinner, Daniel W. Pinkham, Sergei Zavgorodni, Olga Stafford, Maryam Shirmohammad, Jason E. Matney, Piotr Dubrowski, Paul De Jean, Elliot M. Grafil, Amy S. Yu

Publikováno v: Frontiers in Oncology, Vol 14 (2024)

BackgroundBrain radiosurgery treatments require multiple quality-assurance (QA) procedures to ensure accurate and precise treatment delivery of ablative doses. As single-isocenter multitarget radiosurgery treatments become more popular for treating p

Externí odkaz: https://doaj.org/article/f3b25a59ce584a6fa12607be76808456

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Akademický článek

A nine-degree-of-freedom optimization-based method to evaluate the isocenter coincidence of the treatment beams and image system of a medical accelerator

Autor: Yun Zhou, Jian Qiao, Nan Yan, Liyan Dai, Yuehu Pu

Publikováno v: Frontiers in Physics, Vol 12 (2024)

Medical accelerators have been widely used in tumor radiation therapy. Accurate isocenter coincidence between treatment beams and imaging systems is critical for image-guided radiation therapy (IGRT). We propose a method utilizing a phantom with mark

Externí odkaz: https://doaj.org/article/e4d7a4a6c8a545439975a4726c3ef869

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Akademický článek

Dosimetric Effect of Setup Errors on Left Sided Breast Irradiation, For the Mono and Dual Isocenter Techniques

Autor: Yassine Oulhouq, abdeslem rrhioua, Mustapha Zerfaoui, Dikra Bakari

Publikováno v: Iranian Journal of Medical Physics, Vol 20, Iss 5, Pp 290-297 (2023)

Introduction: This study quantifies the dosimetric impact of lateral and longitudinal positioning errors on left-sided breast cancer during 3D conformal radiation therapy, employing both mono isocenter (MIT) and double isocenter technique (DIT) irrad

Externí odkaz: https://doaj.org/article/773034bb4e434a7c8fcf89a4955005e7

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Akademický článek

Single isocenter dynamic conformal arcs-based radiosurgery for brain metastases: Dosimetric comparison with Cyberknife and clinical investigation

Autor: Yoshiko Oshiro, Masashi Mizumoto, Yuichi Kato, Yukihiro Tsuchida, Koji Tsuboi, Takeji Sakae, Hideyuki Sakurai

Publikováno v: Technical Innovations & Patient Support in Radiation Oncology, Vol 29, Iss , Pp 100235- (2024)

Purpose: To compare the dosimetric quality of automatic multiple brain metastases planning (MBM) with that of Cyberknife (CK) based on the clinical tumor condition, such as the tumor number, size, and location. Methods: 76 treatment plans for 46 pati

Externí odkaz: https://doaj.org/article/20022b22948f46d2ad077faf97c5e9fa

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Akademický článek

Overcoming problems caused by offset distance of multiple targets in single-isocenter volumetric modulated arc therapy planning for stereotactic radiosurgery

Autor: Takaaki Ito, Kazuki Kubo, Hajime Monzen, Yuya Yanagi, Kenji Nakamura, Yusuke Sakai, Yasumasa Nishimura

Publikováno v: Journal of Medical Physics, Vol 48, Iss 4, Pp 365-372 (2023)

Purpose: The purpose of the study is to investigate the impact of large target offset distances on the dose distribution and gamma passing rate (GPR) in single-isocenter multiple-target stereotactic radiosurgery (SIMT SRS) using volumetric modulated

Externí odkaz: https://doaj.org/article/774b3f7d7391432fb535aa2b8aff9287

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Akademický článek

Evaluating the Efficacy of Machine Performance Checks as an Alternative to Winston–Lutz Quality Assurance Testing in the TrueBeam Linear Accelerator with HyperArc

Autor: Eun Kyu Kim, Sung Yeop Kim, Jae Won Park, Jaehyeon Park, Ji Woon Yea, Yoon Young Jo, Se An Oh

Publikováno v: Diagnostics, Vol 14, Iss 4, p 410 (2024)

HyperArc is a preferred technique for treating brain metastases, employing a single isocenter for multiple lesions. Geometrical isocentricity in the TrueBeam linear accelerator with HyperArc is crucial. We evaluated machine performance checks (MPCs)

Externí odkaz: https://doaj.org/article/a32a8974dd054731834498ad123a5c3c

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Akademický článek

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Akademický článek

Single-isocenter stereotactic radiosurgery for multiple brain metastases: Impact of patient misalignments on target coverage in non-coplanar treatments

Autor: Michael Martin Eder, Michael Reiner, Christian Heinz, Sylvia Garny, Philipp Freislederer, Guillaume Landry, Maximilian Niyazi, Claus Belka, Marco Riboldi

Publikováno v: Zeitschrift für Medizinische Physik, Vol 32, Iss 3, Pp 296-311 (2022)

Frameless single-isocenter non-coplanar stereotactic radiosurgery (SRS) for patients with multiple brain metastases is a treatment at high geometrical complexity. The goal of this study is to analyze the dosimetric impact of non-coplanar image guidan

Externí odkaz: https://doaj.org/article/49d96ac0dcc749f8abc8856c86464beb

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