Results 81 to 90 of about 14,294 (186)

Comprehensive Comparison of Progressive Optimization Algorithm Based Automatic Plan and Manually Planned Treatment Technique for Cervical-Thoracic Esophageal Cancers

Technology in Cancer Research & Treatment, 2020
Purpose: The purpose of the present study was first to apply the progressive optimization algorithm based automatic volumetric modulated arc therapy (POA-VMAT) technology to accelerate and improve the radiotherapy of cervicothoracic esophageal cancer ...
Yongqiang Zhou MS, Xiaojun Xiang PhD, Jianping Xiong PhD, Changfei Gong MS   +3 more
doaj   +1 more source

Latent density discrepancies in commercial lung‐equivalent inserts and their clinical dosimetric impact

Journal of Applied Clinical Medical Physics, Volume 27, Issue 7, July 2026.
Abstract Background Accurate heterogeneity correction in high‐precision radiotherapy relies on precise computed tomography (CT) number‐to‐density conversion via the Hounsfield unit look‐up table (HLUT). While physical properties of tissue‐equivalent materials are generally assumed consistent with manufacturer specifications, an independent audit ...
Minoru Nakao, Shuichi Ozawa, Hideharu Miura, Masahiro Hayata, Kosaku Habara, Masahiro Kenjo   +5 more
wiley   +1 more source

Dosimetric study for spine stereotactic body radiation therapy: magnetic resonance guided linear accelerator versus volumetric modulated arc therapy

Radiology and Oncology, 2019
Stereotactic body radiation therapy (SBRT) given in 1-5 fractions is an effective treatment for vertebral metastases. Real-time magnetic resonance-guided radiotherapy (MRgRT) improves soft tissue contrast, which translates into accurate delivery of spine
Yadav Poonam, Musunuru Hima B., Witt Jacob S., Bassetti Michael, Bayouth John, Baschnagel Andrew M.   +5 more
doaj   +1 more source

Pulse‑level characterization of low monitor unit deliveries on a modern linear accelerator using a plastic scintillation detector

Journal of Applied Clinical Medical Physics, Volume 27, Issue 7, July 2026.
Abstract Background Variability in low monitor unit (MU) deliveries has been previously documented, but the underlying pulse‑level behavior has not been fully described due to the integrating nature of most conventional detectors. A plastic scintillation detector (PSD) enables direct visualization of MU microstructure by isolating individual linac ...
Andrew J. White, Poonam Yadav, Indra J. Das, Ahtesham U. Khan   +3 more
wiley   +1 more source

Dual‐scan conformal cone‐beam CT for targeted image‐quality improvement using dynamic collimation

Journal of Applied Clinical Medical Physics, Volume 27, Issue 7, July 2026.
Abstract Background Cone‐beam computed tomography (CBCT) is routinely used for image guidance in radiation therapy, but conventional full‐field CBCT acquisition may expose anatomically irrelevant regions and generate substantial scatter, which degrades soft‐tissue contrast and limits the accuracy of target localization and adaptive radiotherapy ...
Yuxiang Liu, Siqi Yuan, Xin Feng, Jianrong Dai   +3 more
wiley   +1 more source

Synthetic CT‐enabled weekly adaptive radiotherapy for nasopharyngeal carcinoma: Optimizing plan adaptation triggers through volumetric–dosimetric monitoring

Journal of Applied Clinical Medical Physics, Volume 27, Issue 7, July 2026.
Abstract Background and purpose Anatomical changes during radiotherapy for nasopharyngeal carcinoma (NPC) frequently compromise target volume coverage while escalating dose delivery to organs at risk (OARs). In adaptive radiotherapy (ART), optimizing workflow efficiency to minimize clinical workload while maximizing patient benefit remains a ...
Zhenmei Cao, Chun Wu, Lixiang Han, Tingting Duan, Fengyu Zhang, Lansheng Zhang, Bin Wang, Weijie Lei, Xinye Ni   +8 more
wiley   +1 more source

Comprehensively evaluating the performance of Elekta high-definition dynamic radiosurgery for hypofractionated stereotactic radiotherapy of multiple brain metastases

Journal of Radiation Research and Applied Sciences
Purpose: To evaluate the dosimetric and delivery performance of Elekta high-definition dynamic radiosurgery (HDRS) in hypofractionated stereotactic radiotherapy (HSRT) for multiple brain metastases (BMs) by comparison with a conventional single-isocenter
Jialu Lai, An Li, Jia Liu, Lin Zhou
doaj   +1 more source

Surface‐guided analysis of breast shape changes during postoperative radiotherapy by using a functional map framework

Medical Physics, Volume 53, Issue 7, July 2026.
Abstract BackgroundWhile positioning errors during radiotherapy are increasingly well‐characterized and accounted for in the Planning Target Volume (PTV), little is known about the shape and volume changes of the breast in the course of radiotherapy. Yet they represent an unknown factor that may impact treatment effectiveness, highlighting the need to ...
Pierre Galmiche, Hyewon Seo, Yvan Pin, Philippe Meyer, Georges Noël, Michel De Mathelin   +5 more
wiley   +1 more source

Novel Clinically Weight-Optimized Dynamic Conformal Arcs (WO-DCA) for Liver SBRT: A Comparison with Volumetric Modulated Arc Therapy (VMAT)

Therapeutics and Clinical Risk Management, 2021
Yucel Saglam,1,2 Yasemin Bolukbasi,1– 3 Ali Ihsan Atasoy,1 Fatih Karakose,1 Mustafa Budak,1 Vildan Alpan,1,2 Erkan Topkan,4 Ugur Selek1– 3 1Koc University, School of Medicine, Department of Radiation Oncology, Istanbul, Turkey; 2UT MD Anderson Radiation ...
Saglam Y, Bolukbasi Y, Atasoy AI, Karakose F, Budak M, Alpan V, Topkan E, Selek U   +7 more
doaj  

Planning strategies and practical implementation of the cardiac dose reduction in the left-side breast irradiation with the deep inspiration breath-hold (DIBH) method

Current Directions in Biomedical Engineering, 2017
Background: Despite of the use of tangential beam directions during the irradiation of mammary carcinomas, a dose reduction of the heart cannot always be achieved.
Wagner Linda, Koch Thomas, Fahrig Antje
doaj   +1 more source