Results 21 to 30 of about 13,530 (120)

Impact of breath-hold level on positional error aligned by stent/Lipiodol in Hepatobiliary radiotherapy with breath-hold respiratory control

BMC Cancer, 2020
Background Respiratory motion management with breath hold for patients with hepatobiliary cancers remain a challenge in the precise positioning for radiotherapy.
Tzu-Jie Huang, Yun Tien, Jian-Kuen Wu, Wen-Tao Huang, Jason Chia-Hsien Cheng   +4 more
doaj   +1 more source

Comparison of Volumetric Modulated Arc Therapy and Three-Dimensional Conformal Radiotherapy in Postoperative High-Grade Glioma: A Dosimetric Comparison [PDF]

Iranian Journal of Medical Physics, 2019
Introduction: We aimed to dosimetrically compare three-dimensional conformal radiotherapy (3D-CRT) and volumetric modulated arc therapy (VMAT) in terms of planning target volume (PTV) coverage, organ at risk (OAR) sparing, and conformity index (CI ...
Harikesh Singh, Ajeet Gandhi, Shantanu Sapru, Rohini Khurana, Rahat Hadi, Sambit Nanda, Satyajeet Rath, Avinav Bharati, Anoop Srivastava, Surendera Mishra, Kamal Sahni, Nuzhat Husain, Madhup Rastogi   +12 more
doaj   +1 more source

The quality assurance of Varian enhanced dynamic wedges using Daily QA Check 2 [PDF]

Archive of Oncology, 2008
Background: Clinical implementation of enhanced dynamic wedges (EDW) requires, as any other dynamic treatment, very serious quality assurance (QA) program.
Rutonjski Laza, Kuzmanović Zoran, Baucal Milutin, Petrović Borislava, Teodorović Milan   +4 more
doaj   +1 more source

Assessment of Dose Distribution and Organ-at-Risk Exposure in VMAT Versus 3D-CRT for Right Breast Cancer [PDF]

Iranian Journal of Medical Physics
Introduction: Breast cancer is one of the most common malignant tumors worldwide, and radiotherapy plays a crucial role in its treatment. This study compares Volumetric Modulated Arc Therapy (VMAT) and Three-Dimensional Conformal Radiotherapy (3D-CRT ...
Mohamed Khairat Allah, Atmane Rane, Abdellah Halimi, Youssef Bouzekraoui, Hicham Asmi, Khalid Elouardy   +5 more
doaj   +1 more source

A study of the clinical, treatment planning and dosimetric feasibility of dose painting in external beam radiotherapy of prostate cancer

Physics and Imaging in Radiation Oncology, 2020
Background and purpose: Radiotherapy dose painting is a promising technique which enables dose escalation to areas of higher tumour cell density within the prostate which are associated with radioresistance, known as dominant intraprostatic lesions (DILs)
Steve W. Blake, Alison Stapleton, Andrew Brown, Sian Curtis, Janice Ash-Miles, Emma Dennis, Susan Masson, Dawn Bowers, Serena Hilman   +8 more
doaj   +1 more source

A feasibility trial of skin surface motion-gated stereotactic body radiotherapy for treatment of upper abdominal or lower thoracic targets using a novel O-ring gantry

Clinical and Translational Radiation Oncology
Background and purpose: A novel O-ring gantry can deliver stereotactic body radiation therapy (SBRT) with artificial intelligence-facilitated, CT-guided online plan adaptation. It gates mobile targets by optically monitoring skin surface motion. However,
Kendall Kiser, Joshua Schiff, Eric Laugeman, Taeho Kim, Olga Green, Casey Hatscher, Hyun Kim, Shahed Badiyan, Matthew Spraker, Pamela Samson, Clifford Robinson, Alex Price, Lauren Henke   +12 more
doaj   +1 more source

The choice of optimal radiotherapy technique for locally advanced maxillary carcinoma using 3d treatment planning system [PDF]

Vojnosanitetski Pregled, 2004
Aim. To compare the isodose distribution of three radiotherapy techniques for locally advanced maxillary sinus carcinoma and analyze the potential of three-dimensional (3D) conformal radiotherapy planning in order to determine the optimal technique for ...
Mileusnić Dušan
doaj   +1 more source

Adaptive Radiotherapy (ART) Using In Vivo Portal Dosimetry Constancy on Halcyon LINAC for Head and Neck Cancer VMAT [PDF]

Iranian Journal of Medical Physics
Introduction: This study evaluated the potential of the Varian Halcyon LINAC and its associated Portal Dosimetry (PD) software, using in vivo megavoltage portal images, as a tool for in vivo portal dosimetry constancy (IVDc) in head and neck cancer (HNC)
Venugopal Sundaram, David Khnna, Mohandass P, Prabhu R, Sathyaraj Palanivel, Rekha Arya, Nilotpal Chakravarty, Antovaz S, Palanivel D   +8 more
doaj   +1 more source

Atlas-based auto-segmentation for postoperative radiotherapy planning in endometrial and cervical cancers

Radiation Oncology, 2020
Background Since intensity-modulated radiation therapy (IMRT) has become popular for the treatment of gynecologic cancers, the contouring process has become more critical.
Nalee Kim, Jee Suk Chang, Yong Bae Kim, Jin Sung Kim   +3 more
doaj   +1 more source

Application of a treatment planning system-assisted large-aperture computed tomography simulator to percutaneous biopsy: initial experience of a radiation therapist

Journal of International Medical Research, 2021
Objective To evaluate the application of treatment planning system (TPS)-assisted large-aperture computed tomography (CT) simulator to percutaneous biopsy.
Xiaoyi Lin, Liqin Ma, Kaixin Du, Junqiang Hong, Shuiying Luo, Youqun Lai, Yongliang Dai, Xiangquan Kong   +7 more
doaj   +1 more source