US 12,343,211 B2
Ultrasound image analyzing apparatus for quantifying contrast agent stagnation
Yuko Takada, Utsunomiya (JP); Masaki Watanabe, Utsunomiya (JP); Yasunori Honjo, Utsunomiya (JP); and Yu Igarashi, Utsunomiya (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed on Jul. 16, 2021, as Appl. No. 17/305,893.
Application 17/305,893 is a continuation of application No. PCT/JP2020/000286, filed on Jan. 8, 2020.
Claims priority of application No. 2019-006215 (JP), filed on Jan. 17, 2019.
Prior Publication US 2021/0338207 A1, Nov. 4, 2021
Int. Cl. A61B 8/00 (2006.01); A61B 8/06 (2006.01)
CPC A61B 8/5207 (2013.01) [A61B 8/06 (2013.01); A61B 8/463 (2013.01); A61B 8/481 (2013.01); A61B 8/5253 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An image analyzing apparatus, comprising:
processing circuitry configured to
generate contrast image data based on a contrast signal acquired from an examined subject to whom a contrast agent is administered;
generate blood flow image data based on a blood flow signal estimated by performing a filtering process on the contrast signal;
identify a stagnant region of the contrast agent where the contrast agent is present and the blood flow is absent in a region of interest, by subtracting the blood flow image data from the contrast image data; and
output information indicating the identified region.