Results 71 to 80 of about 10,962 (218)

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, Diederich, Chris J, Salgaonkar, Vasant, Scott, Serena J, Sommer, F Graham   +4 more
core   +1 more source

Determining optimal transit dosimetry gamma parameter values for the detection of failure modes using receiver operating curve analysis

Journal of Applied Clinical Medical Physics, Volume 27, Issue 1, January 2026.
Abstract Purpose To determine the gamma criteria that maximize the sensitivity and specificity of the transit dosimetry software PerFRACTION (Sun Nuclear Corporation) under five possible failure modes in external beam radiotherapy. Methods We simulated five failure modes that potentially introduce large changes in the absorbed dose distribution: (1 ...
David Sánchez‐Artuñedo, Paula Navarro‐Palomas, Marcelino Hermida‐López, Maria Amor Duch‐Guillén, Mercè Beltran‐Vilagrasa   +4 more
wiley   +1 more source

Identification and mitigation of unexplained dose attenuation caused by sub‐table water accumulation in an MR‐Linac (Elekta Unity)

Journal of Applied Clinical Medical Physics, Volume 27, Issue 1, January 2026.
Abstract Purpose To report and investigate a case of significant dose attenuation observed during quality assurance (QA) of an Elekta Unity MR‐Linac system, and to elucidate its root cause and solution. Methods During a period of abnormal environmental conditions (elevated temperature and humidity), a >20% dose output reduction was detected at a gantry
Jinhu Chen, YuKun Li, Xingwei An, Zhenjiang Li   +3 more
wiley   +1 more source

A Comparison of Planned Dose in TBI VMAT Treatment with Dosimetry Using Portal Dosimetry® and IBA MatriXX®

Brazilian Journal of Radiation Sciences
Bone Marrow Transplant (BMT) is an essential therapeutic intervention in the treatment of diseases such as leukemia and lymphoma, where Total Body Irradiation (TBI) plays a crucial role by eradicating residual diseases and inducing immunosuppression ...
Juan Sousa, I Lima, D Olbi, Lucas Nascimento, Andre Fidelis, Maria Luiza Maciel, Luiz da Rosa, Simone Coutinho Cardoso   +7 more
doaj   +1 more source

In vivo dosimetry in external beam photon radiotherapy: Requirements and future directions for research, development, and clinical practice

Physics and Imaging in Radiation Oncology, 2020
External beam radiotherapy with photon beams is a highly accurate treatment modality, but requires extensive quality assurance programs to confirm that radiation therapy will be or was administered appropriately.
Igor Olaciregui-Ruiz, Sam Beddar, Peter Greer, Nuria Jornet, Boyd McCurdy, Gabriel Paiva-Fonseca, Ben Mijnheer, Frank Verhaegen   +7 more
doaj   +1 more source

Emerging Role of MRI‐Based Artificial Intelligence in Individualized Treatment Strategies for Hepatocellular Carcinoma: A Narrative Review

Journal of Magnetic Resonance Imaging, Volume 63, Issue 1, Page 79-97, January 2026.
ABSTRACT Hepatocellular carcinoma (HCC) is the most common subtype of primary liver cancer, with significant variability in patient outcomes even within the same stage according to the Barcelona Clinic Liver Cancer staging system. Accurately predicting patient prognosis and potential treatment response prior to therapy initiation is crucial for ...
Feng Che, Jing Zhu, Qian Li, Hanyu Jiang, Yi Wei, Bin Song   +5 more
wiley   +1 more source

Feasibility Study of Transit Dosimetry (TD) with an Electronic Portal Imaging Device (EPID) in volumetric arc therapy (VMAT) for head and neck cancer (HNC) [PDF]

Iranian Journal of Medical Physics
Introduction: The progress in radiotherapy treatment modalities, such as Intensity Modulated Radiotherapy (IMRT) and Volumetric Arc Therapy (VMAT), introduces considerable complexity.
ARVIND DIUNDI, KIRAN SHARMA, CHANDI BHATT, SANGEETA HAZARIKA   +3 more
doaj   +1 more source

Creating A Dynamic, Multi-Purpose Correction for Multiple Geometries and Field Sizes to Account for Off-Axis and Asymmetric Backscatter With Varian Portal Dosimetry

, 2016
Intensity modulated radiation therapy and volumetric modulated arc therapy are increasingly common in radiation therapy due to their benefits of target conformity and normal tissue sparing.
Manigold, Remy
core   +1 more source

Interventional oncology: A primer for clinicians on the role of ablation and embolization for solid tumors

CA: A Cancer Journal for Clinicians, Volume 76, Issue 1, January/February 2026.
Abstract Interventional radiology (IR) is a rapidly evolving medical field that combines advanced imaging with minimally invasive techniques for both diagnosis and treatment. Interventional oncology (IO), a subspecialty of IR, focuses on the minimally invasive, image‐guided intervention for cancer and cancer‐related conditions.
Mohamed E. Abdelsalam, Kamran Ahrar, Rahul A. Sheth, Ketan Y. Shah, Steven Yevich, Varshana Gurusamy, Bruno C. Odisio, Alda L. Tam, Armeen Mahvash, Peiman Habibollahi   +9 more
wiley   +1 more source

Implementation and validation of a commercial portal dosimetry software for intensity-modulated radiation therapy pre-treatment verification

Journal of Medical Physics, 2010
Electronic portal imaging devices (EPIDs) are extensively used for obtaining dosimetric information of pre-treatment field verification and in-vivo dosimetry for intensity-modulated radiotherapy (IMRT). In the present study, we have implemented the newly
Varatharaj C, Moretti Eugenia, Ravikumar M, Malisan Maria, Supe Sanjay, Padovani Renato   +5 more
doaj