US 12,105,166 B2
Method and apparatus for shielding a linear accelerator and a magnetic resonance imaging device from each other
Shmaryu M. Shvartsman, Highland Heights, OH (US); Gordon D. DeMeester, Wickliffe, OH (US); James F. Dempsey, Atherton, CA (US); and John Lester Patrick, Chagrin Falls, OH (US)
Assigned to ViewRay Systems, Inc., Denver, CO (US)
Filed by ViewRay Systems, Inc., Denver, CO (US)
Filed on Sep. 20, 2022, as Appl. No. 17/948,428.
Application 17/948,428 is a continuation of application No. 17/174,116, filed on Feb. 11, 2021, granted, now 11,452,463.
Application 17/174,116 is a continuation of application No. 16/362,094, filed on Mar. 22, 2019, granted, now 10,918,887, issued on Feb. 16, 2021.
Application 16/362,094 is a continuation of application No. 15/242,449, filed on Aug. 19, 2016, granted, now 10,463,883, issued on Nov. 5, 2019.
Application 15/242,449 is a continuation of application No. 14/481,619, filed on Sep. 9, 2014, granted, now 9,421,398, issued on Aug. 23, 2016.
Application 14/481,619 is a continuation of application No. 12/837,309, filed on Jul. 15, 2010, granted, now 8,836,332, issued on Sep. 16, 2014.
Claims priority of provisional application 61/225,771, filed on Jul. 15, 2009.
Prior Publication US 2023/0017149 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 33/28 (2006.01); G01R 33/38 (2006.01); G01R 33/42 (2006.01); G01R 33/421 (2006.01); G01R 33/48 (2006.01); A61N 5/10 (2006.01)
CPC G01R 33/28 (2013.01) [G01R 33/3806 (2013.01); G01R 33/42 (2013.01); G01R 33/421 (2013.01); G01R 33/4808 (2013.01); A61N 5/1039 (2013.01); A61N 5/1049 (2013.01); A61N 2005/1055 (2013.01); A61N 5/1081 (2013.01); A61N 2005/1088 (2013.01); A61N 2005/1089 (2013.01); A61N 2005/1094 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A radiation therapy system comprising:
a linear particle accelerator (linac) configured to direct a radiation beam towards an isocenter of the radiation therapy system; and
an RF shield at least partially enclosing some or all of the components of the linac and comprising at least one layer of RF absorbing material and at least one layer of RF reflecting material.