MRI-Linac剂量测量研究进展

doi:10.3760/cma.j.cn113030-20190624-00016

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Abstract The integration of MRI and linac has realized real-time MRI-guided radiotherapy and accelerated the progress of precision radiotherapy. Electrons are subjected to Lorentz force in the magnetic field, especially the electron cyclotron effect occurs at the tissue-air interface, which changes the original electron equilibrium state and brings challenges to dosimetry with MRI-Linac. In recent years, a series of studies carried out through Monte Carlo simulation and experimental measurement have suggested that the conventional dosimetry devices can be used for the dosimetry with MRI-Linac after replacing the magnetic materials, but corresponding correction factors should be introduced according to the magnetic field intensity, placement angle of the measuring device, type of the measuring device. The standardization, streamlining, and real-time dosimetry with MRI-Linac need to be further studied.

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	Articles by authors
	Fu Jiaqi
	Ni Cheng
	Fu Jie

Key words： MRI-Linac Lorentz force Dosimetry

Received: 24 June 2019

Fund:Fund programs:Three-year Action Plan to Promote Clinical Skills and Clinical Innovation Ability in Municipal Hospitals at Development Center of Shanghai Shenkang Hospital (16CR3112B);Shanghai Health and Family Planning Commission Youth Project on Scientific Research Projects (20184Y0229)

Corresponding Authors: Fu Jie, Email:fujie74@sjtu.edu.cn

Cite this article:

Fu Jiaqi,Ni Cheng,Fu Jie. Research progress in dosimetry with MRI-Linac[J]. Chinese Journal of Radiation Oncology, 2020, 29(5): 396-400.

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http://journal12.magtechjournal.com/Jweb_fszlx/EN/10.3760/cma.j.cn113030-20190624-00016 OR http://journal12.magtechjournal.com/Jweb_fszlx/EN/Y2020/V29/I5/396

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