Results 191 to 200 of about 649,932 (223)

MR-linac QA

Radiotherapy plays a crucial role in cancer treatment. An important innovation in the delivery of treatment is the MR-linac, a device that combines magnetic resonance imaging with a linear accelerator. This system enables precise visualization of tumors and surrounding tissues before the start of the treatment session, allowing daily variations to be ...
openaire   +1 more source

Prostate diffusion-weighted imaging (DWI) in MR-guided radiotherapy: Reproducibility assessment on 1.5 T MR-Linac and 1.5 T MR-simulator.

Magnetic Resonance Imaging
PURPOSE Diffusion-weighted imaging (DWI) holds promise for image-guided radiotherapy (MRgRT) in prostate cancer. However, challenges persist due to image distortion, artifacts, and apparent diffusion coefficient (ADC) reproducibility issues.
O. Wong, Jing Yuan, Darren M. C. Poon, S. Chiu, Bin Yang, George Chiu, S. Yu, Kin Yin Cheung   +7 more
semanticscholar   +1 more source

Tumor Trailing for Liver SBRT on the MR-Linac

International Journal of Radiation Oncology*Biology*Physics, 2019
Tumor trailing is a treatment delivery technique that continuously adjusts the beam aperture according to the last available time-averaged position of the target. This study investigates whether tumor trailing on a magnetic resonance (MR) linear accelerator (linac) can improve target coverage in liver stereotactic body radiation therapy (SBRT) in the ...
Martin, Fast, Agustinus, van de Schoot, Tessa, van de Lindt, Casper, Carbaat, Uulke, van der Heide, Jan-Jakob, Sonke   +5 more
openaire   +2 more sources

ViewRay MR-Linac

2023
Hiroyuki Okamoto, Takahito Chiba, Junichi Kuwahara, Hiroshi Igaki   +3 more
openaire   +1 more source

Optimization and validation of low-field MP2RAGE T1 mapping on 0.35T MR-Linac: Toward adaptive dose painting with hypoxia biomarkers.

Medical Physics (Lancaster)
BACKGROUND Stereotactic MR-guided Adaptive Radiation Therapy (SMART) dose painting for hypoxia has potential to improve treatment outcomes, but clinical implementation on low-field MR-Linac faces substantial challenges due to dramatically lower signal-to-
C. Park, Noah Warner, E. Kaza, A. Sudhyadhom   +3 more
semanticscholar   +1 more source

MR-LINAC: Elekta Unity

2023
Noriyuki Kadoya, Shohei Tanaka, Yoshiyuki Katsuta, Kiyokazu Sato, Noriyoshi Takahashi, Keiichi Jingu   +5 more
openaire   +1 more source

Comisionado de un MR-linac Elekta Unity

Revista de Física Médica
La combinación de un acelerador lineal con un equipo de resonancia magnética ha dado lugar a los sistemas de radioterapia guiada por imagen de resonancia magnética, denominados MR-linac. Estos equipos aprovechan la imagen de resonancia magnética para localizar el tumor y la posición de los órganos sanos y hacen posible adaptar el plan de tratamiento en
Carlos Ferrer Gracia, Concepción Huertas Martínez, David García Riñón, Marcos Martínez Sánchez, Giorgia Yang, Miguel Barroso Miranda, Moisés Sáez Beltrán   +6 more
openaire   +1 more source

Towards tumour hypoxia imaging: Incorporating relative oxygen extraction fraction mapping of prostate with multi‐parametric quantitative MRI on a 1.5T MR‐linac

Journal of Medical Imaging and Radiation Oncology
Hypoxia plays a central role in tumour radioresistance. Reliable tumour hypoxia imaging would allow the monitoring of tumour response and a more personalized adaptation of radiotherapy planning.
Emmanuel Mesny, B. Leporq, O. Chapet, Olivier Beuf   +3 more
semanticscholar   +1 more source

MR signature matching (MRSIGMA) implementation for true real‐time free‐breathing volumetric imaging with sub‐200 ms latency on an MR‐Linac

Magnetic Resonance in Medicine
Develop a true real‐time implementation of MR signature matching (MRSIGMA) for free‐breathing 3D MRI with sub‐200 ms latency on the Elekta Unity 1.5T MR‐Linac.
Saad Siddiq, Victor Murray, Neelam Tyagi, P. Borman, Chengcheng Gui, Christopher Crane, Can Wu, Ricardo Otazo   +7 more
semanticscholar   +1 more source

Observations on MR-LINAC systems and rationale for MR-Linac use: The australian MR-Linac project as an example

Physica Medica, 2014
D.I. Thwaites, P. Keall, L. Holloway, J. Sykes, V. Cosgrove   +4 more
openaire   +1 more source