Patent ID: 11954873
Assignee: HEURON CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  A | IPC A  G

Claim 7:
8. A device comprising:
a head segmentation unit configured to receive a CT image, predict a bone mask of a skull, a brain mask of a brain, and a brain-related vessel mask by passing the CT image through a head segmentation network capable of separating the skull and the brain, and extract a brain image including only a brain region from the CT image by combining the predicted brain mask and vessel mask;
a rigid registration unit configured to receive standardized template data from an atlas unit and receive the brain image from the head segmentation unit by fusing characteristics of specific samples to be used as a reference for aligning a plurality of data into a common space, perform rigid registration and affine registration between the template data and the brain image to acquire a transformation parameter, and apply rigid warping to the brain image based on the transformation parameter to acquire a first aligned brain image aligned by a linear transformation;
a non-rigid registration unit configured to extract a deformation field which is a translation vector for each 3D voxel by inputting a 3D volume of the template data and a 3D volume of the first aligned brain image to a pre-learned non-rigid registration network, and acquire a second aligned brain image more accurately registered to the actual brain than a result of the rigid registration unit by performing non-rigid warping that applies grid interpolation in units of voxels to the first aligned brain image based on the deformation field;
a neurovascular segmentation unit configured to extract a cerebrovascular map from the second aligned brain image by passing the second aligned brain image through a neurovascular anatomy segmentation network; and
a determination unit configured to provide brain-related information based on the cerebrovascular map,
wherein the head segmentation unit is configured to
perform pre-processing which is at least one of a resizing operation, a HU windowing operation, and a normalizing operation, with respect to the CT image;
pass the pre-processed CT image through the head segmentation network;
perform post-processing, which is at least one of a brain VOI crop operation and an outlier cluster removing operation with respect to the CT image passing through the head segmentation network; and
predict the bone mask, the brain mask, and the vessel mask based on the post-processed CT image.