US 11,712,583 B2
Utilizing an offset multi-leaf collimator to improve dose conformality and homogeneity
Edward H. Chao, Sunnyvale, CA (US); Eric Schnarr, McFarland, WI (US); and Dylan Casey, Sunnyvale, CA (US)
Assigned to Accuray Incorporated, Sunnyvale, CA (US)
Filed by ACCURAY INCORPORATED, Sunnyvale, CA (US)
Filed on Jun. 30, 2020, as Appl. No. 16/916,407.
Prior Publication US 2021/0402216 A1, Dec. 30, 2021
Int. Cl. A61N 5/10 (2006.01)
CPC A61N 5/1065 (2013.01) [A61N 5/1031 (2013.01); A61N 5/1045 (2013.01); A61N 5/1081 (2013.01); A61N 5/1083 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A radiation delivery system, comprising:
a radiation source to generate a radiation beam to deliver to a target, wherein a line extends from the radiation source to a point of interest including the target; and
a multi-leaf collimator (MLC) operatively coupled to the radiation source, wherein the radiation source and the MLC move along a path of rotation about the point of interest, and wherein the MLC is offset to shift the MLC by a positive or negative one-quarter leaf width in a direction parallel to the path of rotation and perpendicular to the line to cause projections of the radiation beam to be shifted based on the offset.