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Introduction of the Medical Physics Group at Kobe University Hospital
Igaku Butsuri. 2023;43(4):136-139. doi: 10.11323/jjmp.43.4_136.NO ABSTRACTPMID:38417891 | DOI:10.11323/jjmp.43.4_136 (Source: Igaku Butsuri: Japanese Journal of Medical Physics)
Source: Igaku Butsuri: Japanese Journal of Medical Physics - February 28, 2024 Category: Physics Authors: Naritoshi Mukumoto Source Type: research

Editor's note
Igaku Butsuri. 2023;43(4):140. doi: 10.11323/jjmp.43.4_140.NO ABSTRACTPMID:38417892 | DOI:10.11323/jjmp.43.4_140 (Source: Igaku Butsuri: Japanese Journal of Medical Physics)
Source: Igaku Butsuri: Japanese Journal of Medical Physics - February 28, 2024 Category: Physics Source Type: research

A Survey of Dosimetry in the Magnetic Field of MR-Linacs
Igaku Butsuri. 2023;43(4):107-124. doi: 10.11323/jjmp.43.4_107.ABSTRACTIn recent years, MR-Linac, a radiotherapy linear accelerator (linac) equipped with magnetic resonance (MR) imaging, has been deployed in clinical facilities across Japan. Because of the magnetic field of MR-Linac, which can affect the dose distributions and dose response of ionization chambers, conventional reference dosimetry for absorbed dose to water using an ionization chamber becomes impractical. Consequently, the magnetic field effect should be considered in the reference dosimetry for MR-Linac. Although numerous studies have delved into this matt...
Source: Igaku Butsuri: Japanese Journal of Medical Physics - February 28, 2024 Category: Physics Authors: Yuuki Sato Kota Abe Masato Tsuneda Kohki Yasui Toru Kawachi Naoki Tohyama Hideyuki Mizuno Yukio Fujita Source Type: research

Transition of Standard Dosimetry of Absorbed Dose to Water in External Beam Radiotherapy [Part 1]
Igaku Butsuri. 2023;43(4):125-135. doi: 10.11323/jjmp.43.4_125.ABSTRACTThe radiotherapy is performed with the aim of delivering the optimal dose to the target volume with minimal side effect of surrounding normal tissue. For this purpose, quality assurance is essential to ensure that the target volume is correctly irradiated in the optimal geometrical arrangement, and the absorbed dose evaluation is essential to ensure that the prescribed dose is correctly delivered. The absorbed doses are generally evaluated using a small cavity ionization chamber that utilizes gas ionization. For the evaluation of absorbed dose to water ...
Source: Igaku Butsuri: Japanese Journal of Medical Physics - February 28, 2024 Category: Physics Authors: Hidetoshi Saitoh Source Type: research