Results 61 to 70 of about 10,990 (209)
Implementation and evaluation of a transit dosimetry system for treatment verification [PDF]
, 2016 PURPOSE: To evaluate a formalism for transit dosimetry using a phantom study and prospectively evaluate the protocol on a patient population undergoing 3D conformal radiotherapy.
Adeyemi, A +10 more
core +1 more source
Journal of Medical Physics, 2015 The aim of this study was to examine the impact of dose rate on accuracy of intensity modulated radiation therapy (IMRT) plan delivery by comparing the gamma agreement between the calculated and measured portal doses by pretreatment quality assurance (QA)
Karunakaran Kaviarasu +4 more
doaj +1 more source
Life, 2022 Pre-treatment patient-specific quality assurance (QA) is critical to prevent radiation accidents. The electronic portal imaging device (EPID) is a dose measurement tool with good resolution and a low volume-averaging effect.
Seung-Hyeop Baek +6 more
doaj +1 more source
Veterinary and Comparative Oncology, EarlyView.ABSTRACT This retrospective analysis evaluated 12 dogs with hepatocellular carcinoma (HCC) who received stereotactic body radiation therapy (SBRT). Dogs received between 6 and 25 Grey (Gy) per fraction for 1–5 fractions for a total dose of 13–30 Gy. Eleven patients (92%) experienced acute adverse effects (AE), with the majority being VRTOG grade 2–3 ...
Victoria Lee Newberry +3 more
wiley +1 more source
Evaluation of an Electronic Portal Imaging Device for Transit Dosimetry [PDF]
Acta Oncologica, 1999 The possibility of using a commercially available electronic portal imaging device for transit dosimetry was investigated. The detection unit of the device comprises a metal plate/fluorescence screen and a camera. Basic parameters of this system were investigated: stability, detector uniformity, dose-response curve, field-size dependence and phantom ...
X, He +3 more
openaire +2 more sources
Comparison of Different Algorithms in the Radiotherapy Plans of Breast Cancer
ITM Web of Conferences, 2018 It is aimed to evaluate portal dosimetry results of planned breast cancer patients with intensity-modulated radiotherapy (YART) of Anisotropic Analytical Algorithm (AAA) and Pencil Beam Convolution (PBC) dose calculation algorithms.
Çelen Yonca Yahşi, Evcin Atilla
doaj +1 more source
Journal of Applied Clinical Medical Physics, Volume 27, Issue 5, May 2026.Abstract Patient‐specific quality assurance (PSQA) is an essential component of modern radiotherapy, ensuring safe and accurate delivery of increasingly complex treatments. Given its resource‐intensive nature and the availability of evolving approaches, examining how PSQA is implemented and optimized across Canada is important to inform best practices.
Muoi N. Tran +7 more
wiley +1 more source
Theoretical investigation of transgastric and intraductal approaches for ultrasound-based thermal therapy of the pancreas. [PDF]
, 2017 BackgroundThe goal of this study was to theoretically investigate the feasibility of intraductal and transgastric approaches to ultrasound-based thermal therapy of pancreatic tumors, and to evaluate possible treatment strategies.MethodsThis study ...
Adams, Matthew S +4 more
core +1 more source
Boost Approaches in Patients Undergoing Postoperative Radiotherapy
Journal of Surgical Oncology, Volume 133, Issue 6, Page 773-784, May 2026.ABSTRACT The use of breast conservation surgery for early‐stage breast cancer is common, and adjuvant radiotherapy is often recommended to reduce the risk of ipsilateral breast tumor recurrence. Historical trials have used sequential boost techniques with favorable outcomes with reduction in local recurrence and acceptable cosmetic outcomes.
Abigail Pepin +5 more
wiley +1 more source
PET/MRI of Hepatic 90Y Microsphere Deposition Determines Individual Tumor Response. [PDF]
, 2016 PurposeThe purpose of our study is to determine if there is a relationship between dose deposition measured by PET/MRI and individual lesion response to yttrium-90 ((90)Y) microsphere radioembolization.Materials and methods26 patients undergoing lobar ...
Fowler, Kathryn J +7 more
core +2 more sources