US 11,923,071 B2
Multi-phase object contour refinement
Yi-Qing Wang, Paris (FR); Moshe Raboh, Holon (IL); Dana Levanony, Tel Aviv (IL); and Giovanni John Jacques Palma, Chaville (FR)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed on Mar. 3, 2021, as Appl. No. 17/191,166.
Prior Publication US 2022/0285008 A1, Sep. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06K 9/00 (2022.01); G06N 3/08 (2023.01); G06T 7/00 (2017.01); G06T 7/11 (2017.01); G16H 30/40 (2018.01)
CPC G16H 30/40 (2018.01) [G06N 3/08 (2013.01); G06T 7/0012 (2013.01); G06T 7/11 (2017.01); G06T 2207/10081 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/30096 (2013.01); G06T 2210/22 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A system for providing lesion contour refinement for multiphase medical images of an organ, the system comprising:
a display device;
at least one memory for storing medical images; and
an electronic processor configured to:
receive a 3D input mask corresponding to a lesion contour determined for a reference phase of the multiphase medical images;
deform the 3D input mask to correspond to point positions for a target phase coordinate system of the medical images to obtain a deformed input mask corresponding to a target phase;
receive input slices from the target phase medical images that includes a lesion;
crop the input slices to remove a sub-portion of the input slices;
perform lesion contour refinement for the cropped input slices and the 3D input mask to obtain a 3D predicted mask;
determine whether the 3D predicted mask meets a minimal overlap requirement, and only storing the 3D predicted mask when the 3D predicted mask meets the minimal overlap requirement; and
store the 3D predicted mask for the target phase to provide a 3D lesion contour.