US 11,938,344 B2
Beam path based patient positioning and monitoring
Hagen Kaiser, Munich (DE); and Michael Stead, Munich (DE)
Assigned to Brainlab AG, Munich (DE)
Appl. No. 17/255,558
Filed by Brainlab AG, Munich (DE)
PCT Filed Jul. 8, 2019, PCT No. PCT/EP2019/068274
§ 371(c)(1), (2) Date Dec. 23, 2020,
PCT Pub. No. WO2020/020623, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. PCT/EP2018/070062 (WO), filed on Jul. 24, 2018.
Prior Publication US 2021/0339050 A1, Nov. 4, 2021
Int. Cl. A61N 5/10 (2006.01)
CPC A61N 5/1049 (2013.01) [A61N 5/107 (2013.01); A61N 2005/105 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A computer-implemented method of positioning a patient for a radiation treatment and/or of monitoring a position of the patient during the radiation treatment, the method comprising:
providing surface data from a 3D surface scanner, wherein the surface data are indicative of a surface of at least a part of a body part of the patient to be irradiated in the radiation treatment, and wherein the surface data are calibrated with respect to a relative position of the 3D surface scanner and an isocenter position of a radiation treatment apparatus;
reconstructing a beam path of a radiation beam based on planning data for the radiation treatment; and
calculating, based on intersecting the surface and the reconstructed beam path, at least a first portion of the surface of the body part located inside the beam path and/or at least a second portion of the surface of the body part located outside the beam path.