Results 1 to 10 of about 29,307 (243)

Multicriteria VMAT optimization [PDF]

Medical physics, 2011
Purpose: To make the planning of volumetric modulated arc therapy (VMAT) faster and to explore the tradeoffs between planning objectives and delivery efficiency. Methods: A convex multicriteria dose optimization problem is solved for an angular grid of
Bedford, Bortfeld, Bzdusek, Carol, Chen, Craft, Craft, Craft, Craft, David Craft, Deasy, Dualta McQuaid, Ehsan Salari, Herman, Hong, Jelen, Jeremiah Wala, Luan, Men, Monz, Oliver, Otto, Rao, Rennen, Romeijn, Salter, Scherrer, Spirou, Stein, Svensson, Thieke, Thomas Bortfeld, Wang, Wei Chen, Woudstra, Yu, Yu, Zhang   +37 more
core   +4 more sources

Optimal partial-arcs in VMAT treatment planning [PDF]

Physics in Medicine and Biology, 2012
Purpose: To improve the delivery efficiency of VMAT by extending the recently published VMAT treatment planning algorithm vmerge to automatically generate optimal partial-arc plans.
Bortfeld T, Boylan C, Calvo O, Cotrutz C, Crop F, David Craft, Ehsan Salari, Jeremiah Wala, Monz M, Svensson R, Wei Chen, Yu C   +11 more
core   +3 more sources

Dosimetric Evaluation of Tangential Arc and Jaw Tracking Techniques in Volumetric Modulated Arc Therapy for Synchronous Bilateral Breast Cancer [PDF]

International Journal of Women's Health
Jiyong Zhang,1,* Zewei Chen,1,* Danli Hong2 1Department of Radiation Oncology, Cancer Hospital of Shantou University Medical College, Shantou, Guangdong, 515000, People’s Republic of China; 2Department of Endocrinology, The First ...
Zhang J, Chen Z, Hong D
doaj   +2 more sources

Dosimetric Comparative Study between Single and Dual Isocenter Stereotactic Body Radiotherapy Plans in Treatment of Multiple Lesions Non-Small Cell Lung Cancer Patients [PDF]

Iranian Journal of Medical Physics, 2023
Introduction: stereotactic body radiotherapy (SBRT) is the most proper treatment for multi lesions non-small cell lung cancer (NSCLC) for enhanced good coverage and minimizing dose to organs at risk (OARs).
Mona Ibraheim, Magda Hanafy, Khaled El-Shahat, Mohammed Bayomy, Hany Attallah, Nesma khalil   +5 more
doaj   +1 more source

Modern Radiotherapy for a Medieval Malady: An Analysis of Treatment Toxicities for Locally Advanced Head and Neck Cancers [PDF]

Middle East Journal of Cancer, 2021
Background: Concurrent chemo-radiation has proven to be beneficial in a majority of patients with locally advanced head and neck cancers. Despite modern techniques of radiation delivery, the trade-off is acute and entails late toxicities for a ...
Fathima Almas, Anshul Singh, Krishna Sharan, Shirley Lewis, Sannareddy Reddy, Umesh Velu, Priyanka Augustine   +6 more
doaj   +1 more source

Multi-Planar VMAT Plans for High-Grade Glioma and Glioblastoma Targeting the Hypothalamic-Pituitary Axis Sparing

Life, 2022
Background: This study aimed to identify the better arc configuration of volumetric modulated arc therapy (VMAT) for high-grade glioma and glioblastoma, focusing on a dose reduction to the hypothalamic–pituitary axis through an analysis of dose ...
Eva Y. W. Cheung, Shirley S. H. Ng, Sapphire H. Y. Yung, Dominic Y. T. Cheng, Fandy Y. C. Chan, Janice K. Y. Cheng   +5 more
doaj   +1 more source

Modified VMAT Plans for Locally Advanced Centrally Located Non-Small Cell Lung Cancer (NSCLC)

Life, 2021
Objectives: This study aimed to find the optimal radiotherapy VMAT plans, that achieved high conformity and homogeneity to the planned target volume (PTV), and minimize the dose to nearby organs at risk including the non-PTV lung, heart and oesophagus ...
Eva Y. W. Cheung, Virginia H. Y. Kwong, Fandy Y. C. Chan, Dominic Y. T. Cheng, Janice K. Y. Cheng, Sapphire H. Y. Yung, Kiris T. K. Chan, Kelly T. Y. Cheung, Tracy S. W. Cheung, Janna C. L. Yiu   +9 more
doaj   +1 more source

Establishment of criteria for gamma-analysis of individual dose distributions during verification of radiotherapy high-tech treatment plans for cancer patients

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2022
A typical process for verification of treatment plans in intensity-modulated radiation therapy is described. The main errors and uncertainties that arise in the course of planning dose distribution and in the process of dose delivery are listed.
M. N. Piatkevich, H. I. Brynkevich, E. V. Titovich   +2 more
doaj   +1 more source

Planning study of flattening filter free beams for volumetric modulated arc therapy in squamous cell carcinoma of the scalp. [PDF]

PLoS ONE, 2014
Flattening filter free (FFF) beams show the potential for a higher dose rate and lower peripheral dose. We investigated the planning study of FFF beams with their role for volumetric modulated arc therapy (VMAT) in squamous cell carcinoma of the scalp ...
Youqun Lai, Liwan Shi, Qin Lin, Lirong Fu, Huiming Ha   +4 more
doaj   +1 more source

Dosimetric Comparison between High Dose Rate Brachytherapy Boost and Volumetric Arc Therapy Boost in Locally Advanced Cancer Cervix

Asian Journal of Oncology, 2021
Concurrent chemoradiotherapy is considered the standard treatment for the locally advanced cancer cervix (LACC). Radiotherapy is commonly administered by a three-dimensional conformal radiotherapy (3DCRT) approach followed by brachytherapy (BT).
Hanady Hegazy, Neamat Hegazy, Maher Soliman, Amr Elsaid   +3 more
doaj   +1 more source