US 12,283,043 B2
Tissue boundary determination apparatus and method
Yan Sun, Beijing (CN); Xueli Wang, Beijing (CN); Mingyang Yang, Beijing (CN); and Bingjie Zhao, Beijing (CN)
Assigned to GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed by GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed on May 23, 2022, as Appl. No. 17/750,631.
Claims priority of application No. 202110576883.0 (CN), filed on May 26, 2021.
Prior Publication US 2022/0383491 A1, Dec. 1, 2022
Int. Cl. G06T 7/00 (2017.01); G06T 7/12 (2017.01); G06T 7/174 (2017.01)
CPC G06T 7/0012 (2013.01) [G06T 7/12 (2017.01); G06T 7/174 (2017.01); G06T 2207/10081 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tissue boundary determination apparatus, the apparatus comprising:
an image acquisition unit, used to acquire multiple slice images of multiple positions of a tissue to be examined;
a first boundary determination unit, used to determine, with regard to at least one first selected slice image of the multiple slice images, a tissue boundary on the first selected slice image; and
a second boundary determination unit, used to determine, according to the tissue boundary on the first selected slice image, tissue boundaries on a predetermined number of other slice images adjacent to the first selected slice image;
wherein the multiple slice images are spectral images acquired by performing CT scanning on the multiple positions of the tissue to be examined, and the determination of the tissue boundary on the selected slice image includes:
performing feature extraction on each pixel on the selected slice image to acquire features of all pixels on the selected slice image;
initializing a seed point on the selected slice image; and
performing, on the selected slice image, according to the features of all of the pixels on the selected slice image and a pre-configured region expansion criterion, region expansion on the seed point to acquire the tissue boundary on the selected slice image.