US 10,888,290 B2
Medical-image processing apparatus and medical-image diagnostic apparatus
Satoshi Wakai, Nasushiobara (JP); Takuya Sakaguchi, Utsunomiya (JP); and Akihito Takahashi, Nasushiobara (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed on Sep. 18, 2017, as Appl. No. 15/707,771.
Application 15/707,771 is a division of application No. 14/617,082, filed on Feb. 9, 2015.
Claims priority of application No. 2014-023740 (JP), filed on Feb. 10, 2014.
Prior Publication US 2018/0020998 A1, Jan. 25, 2018
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 6/00 (2006.01)
CPC A61B 6/466 (2013.01) [A61B 6/5247 (2013.01); G06T 2207/10004 (2013.01); G06T 2207/10072 (2013.01); G06T 2207/30101 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A medical-image processing apparatus, comprising:
processing circuitry configured to
acquire a first medical image containing a coronary artery and a second medical image containing a myocardial tissue,
extract the coronary artery in the first medical image and the myocardial tissue in the second medical image;
identify a positional relationship between the first medical image and the second medical image based on the extraction results of the coronary artery and the myocardial tissue,
generate a blood flow image representing an index relating to blood flow that is analyzed through the coronary artery by fluid analysis on the first medical image, wherein the blood flow image represents the index relating to blood flow on the extracted coronary artery,
generate a perfusion image showing a perfusion index representing a dynamic behavior of blood flow passing through the myocardial tissue, the perfusion index being obtained by perfusion analysis on the second medical image, wherein the perfusion image represents the perfusion index on the extracted myocardial tissue,
generate a combined image by combining the blood flow image and the perfusion image based on the positional relationship,
identify a dominant region on the myocardial tissue where a target branch of the coronary artery feeds blood,
determine whether a myocardial abnormality is included in the dominant region based on the perfusion index,
obtain the index relating to blood flow at the target branch of the coronary artery,
calculate a treatment index indicating necessity of treatment for the target branch of the coronary artery using a determination result of the myocardial abnormality and the index relating to blood flow at the target branch of the coronary artery, and
cause a display to display the treatment index in association with the target branch of the coronary artery on the combined image.