US 11,986,674 B2
Radiation therapy system and method
Cheng Ni, Shanghai (CN); Xingen Yu, Shanghai (CN); Yanfang Liu, Shanghai (CN); Jingjie Zhou, Shanghai (CN); Jianfeng Liu, Shanghai (CN); Li Wang, Shanghai (CN); Peng Wang, Shanghai (CN); and Yangyang Zhang, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on Mar. 29, 2021, as Appl. No. 17/216,665.
Application 17/216,665 is a continuation of application No. 16/298,471, filed on Mar. 11, 2019, granted, now 10,960,229.
Application 16/298,471 is a continuation of application No. PCT/CN2018/115394, filed on Nov. 14, 2018.
Prior Publication US 2021/0213305 A1, Jul. 15, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 5/10 (2006.01); A61B 5/055 (2006.01); G01R 33/34 (2006.01); G01R 33/48 (2006.01); G21K 5/04 (2006.01); H05H 7/22 (2006.01)
CPC A61N 5/1049 (2013.01) [A61B 5/055 (2013.01); A61N 5/1045 (2013.01); A61N 5/1081 (2013.01); G01R 33/3403 (2013.01); G01R 33/4808 (2013.01); G21K 5/04 (2013.01); H05H 7/22 (2013.01); A61N 2005/1055 (2013.01); A61N 2005/1091 (2013.01); A61N 2005/1094 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A radiation therapy system comprising:
a magnetic resonance imaging (MRI) apparatus configured to acquire MRI data with respect to a region of interest (ROI), the MRI apparatus including:
an annular cryostat, the annular cryostat including at least one outer wall and at least one inner wall coaxial around an axis of the annular cryostat;
a radiation therapy apparatus configured to apply therapeutic radiation to at least one portion of the ROI, the radiation therapy apparatus including:
a linear accelerator configured to accelerate electrons in an electron beam to produce a photon beam of the therapeutic radiation, at least a portion of the linear accelerator being located within a recess of the MRI apparatus; and
a first shielding structure configured to provide magnetic shielding for at least one of the linear accelerator and the one or more collimation components; and
the recess between the at least one outer wall and the at least one inner wall of the annular cryostat, the recess has an opening formed on the at least one outer wall, and the at least a portion of the linear accelerator stretches out of the opening, wherein the at least a portion of the linear accelerator is surrounded by at least a portion of the first shielding structure, the at least a portion of the first shielding structure surrounding the at least a portion of the linear accelerator is located within the recess of the MRI apparatus, and the first shielding structure provides passive magnetic shielding for the linear accelerator.