US 12,268,897 B2
Systems and methods for adjusting multi-leaf collimator
Johannes Stahl, Houston, TX (US); and Walter Arturo Aguilar, Houston, TX (US)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on Nov. 28, 2022, as Appl. No. 18/059,400.
Application 18/059,400 is a continuation of application No. 16/848,857, filed on Apr. 15, 2020, granted, now 11,511,130.
Prior Publication US 2023/0093591 A1, Mar. 23, 2023
Int. Cl. A61N 5/10 (2006.01); G21K 1/02 (2006.01); G21K 1/04 (2006.01)
CPC A61N 5/1045 (2013.01) [A61N 5/10 (2013.01); A61N 5/103 (2013.01); A61N 5/1031 (2013.01); A61N 5/1036 (2013.01); A61N 5/1042 (2013.01); A61N 5/1043 (2013.01); A61N 5/1044 (2013.01); A61N 5/1047 (2013.01); A61N 5/1048 (2013.01); A61N 5/1064 (2013.01); A61N 5/1065 (2013.01); A61N 5/1067 (2013.01); A61N 5/1077 (2013.01); A61N 5/1081 (2013.01); G21K 1/02 (2013.01); G21K 1/025 (2013.01); G21K 1/04 (2013.01); G21K 1/043 (2013.01); G21K 1/046 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system comprising:
a multi-leaf collimator (MLC), the MLC including a plurality of cross-layer leaf pairs, each cross-layer leaf pair of the plurality of cross-layer leaf pairs includes a first leaf located in a first layer of leaves and a second leaf opposingly located in a second layer of leaves, wherein:
for each cross-layer leaf pair of at least one of the plurality of cross-layer leaf pairs,
an effective cross-layer leaf gap is formed between the first leaf in the first layer of leaves and the second leaf in the second layer of leaves;
an in-layer leaf gap is formed between the first leaf in the first layer of leaves and an opposing first leaf in the first layer of leaves of the MLC, the first leaf and the opposing first leaf forming an in-layer leaf pair in the first layer of leaves; and
a size of the in-layer leaf gap is no less than a size of the effective cross-layer leaf gap.