US 11,696,744 B2
Ultrasound imaging apparatus for registering ultrasound image with image from another modality and method of operating ultrasound imaging apparatus
Junsung Park, Seongnam-si (KR); Yuri Son, Seongnam-si (KR); Yeongseon Kim, Seongnam-si (KR); Jonghyon Yi, Seongnam-si (KR); and Yeonmo Jeong, Seongnam-si (KR)
Assigned to SAMSUNG MEDISON CO.. LTD., Hongcheon-gun (KR)
Filed by SAMSUNG MEDISON CO., LTD., Hongcheon-gun (KR)
Filed on Feb. 14, 2020, as Appl. No. 16/791,426.
Claims priority of application No. 10-2019-0022580 (KR), filed on Feb. 26, 2019.
Prior Publication US 2020/0268348 A1, Aug. 27, 2020
Int. Cl. A61B 8/00 (2006.01); A61B 8/08 (2006.01); G06T 7/00 (2017.01); G06T 7/33 (2017.01); A61B 6/00 (2006.01); G01R 33/48 (2006.01)
CPC A61B 8/463 (2013.01) [A61B 6/5217 (2013.01); A61B 8/4245 (2013.01); A61B 8/46 (2013.01); A61B 8/5261 (2013.01); G06T 7/0012 (2013.01); G06T 7/33 (2017.01); A61B 6/5247 (2013.01); A61B 8/4405 (2013.01); A61B 8/464 (2013.01); A61B 8/469 (2013.01); A61B 8/5223 (2013.01); G01R 33/4814 (2013.01); G06T 2207/10072 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/10088 (2013.01); G06T 2207/10132 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/30004 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method, performed by an ultrasound imaging apparatus, of registering a first image that is an ultrasound image and a second image that is an image from another modality, the method comprising:
loading the second image pre-acquired for a patient;
acquiring information about a position and an orientation of an ultrasound probe based on a three-dimensional positional relationship between at least one external electromagnetic sensor attached to a first feature point of a patient's body and an electromagnetic sensor of the ultrasound probe;
extracting, from the second image, a second feature point corresponding to the first feature point;
registering the first and second images based on the three-dimensional positional relationship between the at least one external electromagnetic sensor and the electromagnetic sensor of the ultrasound probe and on a position of the second feature point extracted from the second image; and
displaying the first image in a first region of a display and the second image registered with the first image in a second region of the display,
wherein the registering the first and second images comprises:
acquiring information about an angle between a first external electromagnetic sensor attached to the first feature point of the patient's body and a second external electromagnetic sensor attached to a structural feature point of the patient's body different from the first feature point; and
correcting an angular error in the second image based on the information about the angle between the first external electromagnetic sensor and the second external electromagnetic sensor.