Results 111 to 120 of about 195,339 (270)

Comparative Evaluation of Four Stereotactic Radiosurgery Planning Approaches for Treatment of Posterior Choroidal Melanoma

Journal of Medical Radiation Sciences, EarlyView.
This study evaluated four stereotactic radiosurgery planning approaches for posterior choroidal melanoma (CM). Analysis of thirteen CM cases resulted in a clinically meaningful reduction in dose to the brain for Brainlab Elements modulated arcs (BE) and Varian Eclipse HyperArc modulated arcs (HA) compared to Brainlab iPlan dynamic conformal arc therapy
Robert Nigro, Kenton Thompson, Cathy Markham, Adam U. Yeo, Daniel Sapkaroski, Claire Phillips   +5 more
wiley   +1 more source

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

Development and operation of a pixel segmented liquid-filled linear array for radiotherapy quality assurance

, 2004
A liquid isooctane (C$_{8}$H$_{18}$) filled ionization linear array for radiotherapy quality assurance has been designed, built and tested. The detector consists of 128 pixels, each of them with an area of 1.7 mm $\times$ 1.7 mm and a gap of 0.5 mm.
A Iglesias, A Pazos, Belletti S, Boag J W, Debye P, Eberle K, F Gómez, Fowler J F, J Mosquera, J Pardo, J Pena, J Sendón, Johansson B, L Franco, M Pombar, Martens C, Martens C, Pardo J, R Lobato, van Herk M, Wickman G   +20 more
core   +1 more source

A Systematic Review on 3D-Printed Imaging and Dosimetry Phantoms in Radiation Therapy

Technology in Cancer Research and Treatment, 2019
Introduction: Additive manufacturing or 3-dimensional printing has become a widespread technology with many applications in medicine. We have conducted a systematic review of its application in radiation oncology with a particular emphasis on the ...
R. Tino, A. Yeo, M. Leary, M. Brandt, T. Kron   +4 more
semanticscholar   +1 more source

Evaluation of automated pre-treatment and transit in-vivo dosimetry in radiotherapy using empirically determined parameters

Physics and Imaging in Radiation Oncology, 2020
Highlights • In-vivo transit dosimetry efficiently reveals a wide variety of deviations.• In-vivo transit dosimetry shows potential to serve as a base for adaptive planning.• Tolerance levels should balance false positive and relevant true positive ...
E. Bossuyt, R. Weytjens, D. Nevens, S. De Vos, D. Verellen   +4 more
semanticscholar   +1 more source

Size‐specific dose estimates calculated using patient size measurements from scanned projection radiograph in high‐resolution chest computed tomography

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 85-92, March 2025.
This study established that patient's lateral width measurements made from scanned projection radiograph (SPR) is an overestimate compared to those measured from tomographic slices by about 10%. Size‐specific dose estimates (SSDE) calculated using lateral width measured from SPR correlates well with SSDE calculated using water equivalent diameter of ...
Ajit Brindhaban
wiley   +1 more source

Implementing log file-based patient-specific QA for VMAT plans: A comparative study of MobiusFX and measurement-based approaches. [PDF]

J Appl Clin Med Phys
Abstract Background The current interest in utilizing log file‐based patient‐specific quality assurance (PSQA) is growing as an alternative to measurement‐based approaches for volumetric modulated arc therapy (VMAT) plans. However, implementing log file‐based PSQA requires further experience and understanding since there are no guidelines. Purpose This
Sawapabmongkon T, Changkaew P, Puttanawarut C, Tangboonduangjit P, Khachonkham S.   +4 more
europepmc   +2 more sources

Intrafraction motion and impact of margin reduction for MR‐Linac online adaptive radiotherapy for pancreatic cancer treatments

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 17-24, March 2025.
This analysis included quantification of intrafraction motion in pancreas stereotactic ablative radiotherapy treated on the MR‐Linac, leading to the development of adjusted (PTV) margins. Intrafraction motion indicated an average target displacement of 1–3 mm, resulting in an adjusted PTV margin of 2 mm in the right–left and superior–inferior ...
Ashleigh Fasala, Madeline Carr, Yolanda Surjan, Parmoun Daghigh, Jeremy de Leon, Abbey Burns, Vikneswary Batumalai   +6 more
wiley   +1 more source

Advanced dosimetry systems for the space transport and space station [PDF]

, 1972
Advanced dosimetry system concepts are described that will provide automated and instantaneous measurement of dose and particle spectra. Systems are proposed for measuring dose rate from cosmic radiation background to greater than 3600 rads/hr.
Clark, B. C., Schneider, M. F., Wailly, L. F.   +2 more
core   +1 more source

Molecular theranostics: principles, challenges and controversies

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 156-164, March 2025.
Molecular theranostics offers a powerful tool to drive precision medicine in nuclear oncology. While theranostics is not a new principle in nuclear medicine, recent advances in instrumentation and radiopharmacy have driven a reinvigoration and a broader suite of applications.
Geoffrey Currie
wiley   +1 more source