US 12,251,189 B2
Position feed back indicator for medical imaging
Sascha Krueger, Hamburg (DE); Christian Stehning, Hamburg (DE); and Peter Mazurkewitz, Hamburg (DE)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 16/972,636
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Jun. 4, 2019, PCT No. PCT/EP2019/064404
§ 371(c)(1), (2) Date Dec. 7, 2020,
PCT Pub. No. WO2019/238462, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 18176909 (EP), filed on Jun. 11, 2018.
Prior Publication US 2021/0244283 A1, Aug. 12, 2021
Int. Cl. A61B 5/00 (2006.01); A61B 5/055 (2006.01); A61N 5/10 (2006.01); G01R 33/28 (2006.01); G01R 33/385 (2006.01); G01R 33/565 (2006.01)
CPC A61B 5/0036 (2018.08) [A61B 5/0077 (2013.01); A61B 5/055 (2013.01); A61B 5/704 (2013.01); A61B 5/7221 (2013.01); A61B 5/744 (2013.01); A61N 5/1048 (2013.01); G01R 33/283 (2013.01); G01R 33/385 (2013.01); G01R 33/56509 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A medical instrument comprising:
a medical imaging system configured to acquire medical imaging data from a subject reposing on a subject support;
a camera system for imaging a portion of a subject reposing on the subject support when the medical imaging system is acquiring the medical imaging data from the subject reposing on the subject support;
a display for rendering a position feedback indicator, that represents a displacement of the subject relative to an initial position of the subject, wherein the display is configured such that the position feedback indicator is visible to the subject when the subject is reposing on the subject support;
a memory for storing machine executable instructions;
a processor for controlling the medical instrument, wherein execution of the machine executable instructions causes the processor to:
acquire a base position image using the camera system, the base position image corresponding to the initial position of the subject;
acquire a subsequent image using the camera system;
calculate an image transformation from voxels of at least a portion of the base position image to voxels of the subsequent image by mapping a displacement of voxels in the base position image to a location in the subsequent image, wherein the mapping of the displacement of voxels in the base position image to a location in the subsequent image is indicative of a movement change in the initial position of the subject; and
render a position feedback indicator on the display, wherein the position feedback indicator is controlled by the image transformation;
wherein the acquisition of the subsequent image, the calculation of the image transformation, and the rendition of the position feedback indicator are repeated to provide real time feedback to the subject about the displacement of the subject relative to the initial position of the subject while the subject is reposing on the subject support.