Results 31 to 40 of about 14,294 (186)

The Advantage of Proton Therapy in Hypothalamic-Pituitary Axis and Hippocampus Avoidance for Children with Medulloblastoma [PDF]

International Journal of Particle Therapy, 2021
Purpose: Craniospinal irradiation (CSI) improves clinical outcomes at the cost of long-term neuroendocrine and cognitive sequelae. The purpose of this pilot study was to determine whether hypothalamic-pituitary axis (HPA) and hippocampus avoidance (HPA ...
Saif Aljabab, MBBS, FRCPC, Shushan Rana, MD, Shadonna Maes, CMD, Avril O’Ryan-Blair, CMD, Jackie Castro, CMD, Jack Zheng, MD, Lia M. Halasz, MD, Phillip J. Taddei, PhD   +7 more
doaj   +1 more source

HyperArc VMAT planning for single and multiple brain metastases stereotactic radiosurgery: a new treatment planning approach

Radiation Oncology, 2018
Purpose The HyperArc VMAT (HA-VMAT) planning approach was newly developed to fulfill the demands of dose delivery for brain metastases stereotactic radiosurgery.
Shingo Ohira, Yoshihiro Ueda, Yuichi Akino, Misaki Hashimoto, Akira Masaoka, Takero Hirata, Masayoshi Miyazaki, Masahiko Koizumi, Teruki Teshima   +8 more
doaj   +1 more source

Complementing Prostate SBRT VMAT With a Two-Beam Non-Coplanar IMRT Class Solution to Enhance Rectum and Bladder Sparing With Minimum Increase in Treatment Time

Frontiers in Oncology, 2021
PurposeEnhance rectum and bladder sparing in prostate SBRT with minimum increase in treatment time by complementing dual-arc coplanar VMAT with a two-beam non-coplanar IMRT class solution (CS).MethodsFor twenty patients, an optimizer for automated multi ...
Abdul Wahab M. Sharfo, Linda Rossi, Maarten L. P. Dirkx, Sebastiaan Breedveld, Shafak Aluwini, Ben J. M. Heijmen   +5 more
doaj   +1 more source

Investigation of VMAT Algorithms and Dosimetry [PDF]

Practical Radiation Oncology, 2013
{"references": ["Gregoire V, De neve W, Eisbruch A, Lee N, Van den Weyngaert D, Van Gestel D. Intensity modulated radiation therapy for Head and Neck carcinomas. The Oncologist. 2007; 12: 555-564.", "Braam P, Terhaard C, Roesink J. Intensity Modulated Radiotherapy significantly reduces xerostomia compared with conventional radiotherapy.
openaire   +3 more sources

Effective Organs-at-Risk Dose Sparing in Volumetric Modulated Arc Therapy Using a Half-Beam Technique in Whole Pelvic Irradiation

Frontiers in Oncology, 2021
BackgroundAlthough there are some controversies regarding whole pelvic radiation therapy (WPRT) due to its gastrointestinal and hematologic toxicities, it is considered for patients with gynecological, rectal, and prostate cancer.
Hyunsoo Jang, Jiyeon Park, Jiyeon Park, Mark Artz, Mark Artz, Yawei Zhang, Yawei Zhang, Jacob C. Ricci, Soon Huh, Soon Huh, Perry B. Johnson, Perry B. Johnson, Mi-Hwa Kim, Mison Chun, Young-Taek Oh, O Kyu Noh, Hae-Jin Park   +16 more
doaj   +1 more source

Comparison of dosimetric characteristics between flattening filter‐free and flattening filter mode volumetric‐modulated arc therapy plans in rectal cancer

Precision Radiation Oncology, 2021
Objective We aimed to compare the dosimetric characteristics of 6‐MV flattening filter mode (FF) and flattening filter‐free mode (FFF) volumetric‐modulated arc therapy (VMAT) plans in preoperative radiotherapy for rectal cancer using an Edge linear ...
Zhen Ding, Xiaoyong Xiang, Kailian Kang, Qi Zeng, Qingqing Yuan, Meiling Xu   +5 more
doaj   +1 more source

Volumetric modulated arc therapy (VMAT) for hippocampal-avoidance whole brain radiation therapy: planning comparison with Dual-arc and Split-arc partial-field techniques

Radiation Oncology, 2020
Background Although whole brain radiation therapy (WBRT) provides palliation and prophylaxis, reduces local recurrence probability and improves overall survival, it is evident that WBRT is associated with neurocognitive deficits due to radiation induced ...
Adams Hei Long Yuen, Po Man Wu, Alex Kai Leung Li, Philip Chung Yin Mak   +3 more
doaj   +1 more source

Dosimetric Comparison of Tangential Volumetric Arc Therapy and Half Beam Volumetric Modulated Arc Therapy Planning Technique for Carcinoma of the Breast [PDF]

Iranian Journal of Medical Physics
Introduction: This study aims to compare tangential volumetric modulated arc therapy with half beam volumetric modulated arc therapy in the treatment of cancer in the left and right breasts.
Shreekripa Rao, Alpha Benny, Srinidhi Chandraguthi, Rechal Dsouza   +3 more
doaj   +1 more source

Multicriteria optimization informed VMAT planning [PDF]

Medical Dosimetry, 2014
We developed a patient-specific volumetric-modulated arc therapy (VMAT) optimization procedure using dose-volume histogram (DVH) information from multicriteria optimization (MCO) of intensity-modulated radiotherapy (IMRT) plans. The study included 10 patients with prostate cancer undergoing standard fractionation treatment, 10 patients with prostate ...
Huixiao, Chen, David L, Craft, David P, Gierga   +2 more
openaire   +2 more sources

Dosimetric Comparison of Noncoplanar VMAT Without Rotating the Patient Couch Versus Conventional Coplanar/Noncoplanar VMAT for Head and Neck Cancer: First Report of Dynamic Swing Arc

Advances in Radiation Oncology
Purpose: This retrospective planning study aimed to verify the usefulness of a clinically available method, dynamic swing arc (DSA), a noncoplanar volumetric modulated arc therapy (VMAT) technique, of the new accelerator OXRAY for head and neck squamous ...
Kouta Hirotaki, MS, Kento Tomizawa, MD, PhD, Satoe Kitou, BS, Shunta Jinno, MS, Shunsuke Moriya, PhD, Takeshi Fujisawa, MD, Sadamoto Zenda, MD, PhD, Takeji Sakae, PhD, Masashi Ito, BS   +8 more
doaj   +1 more source