US 11,717,269 B2
Ultrasound diagnosis apparatus, medical image processing apparatus, and storage medium
Takeshi Sato, Nasushiobara (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed on Sep. 4, 2019, as Appl. No. 16/560,656.
Claims priority of application No. 2018-165660 (JP), filed on Sep. 5, 2018.
Prior Publication US 2020/0069294 A1, Mar. 5, 2020
Int. Cl. A61B 8/06 (2006.01); A61B 8/08 (2006.01); G01S 7/52 (2006.01); A61B 8/14 (2006.01)
CPC A61B 8/5276 (2013.01) [A61B 8/14 (2013.01); G01S 7/52077 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An ultrasound diagnosis apparatus comprising:
processing circuitry configured:
to sequentially obtain eigenvalues of a correlation matrix of a scan range, the correlation matrix being obtained from a data sequence of reflected-wave data in a mutually same position acquired by performing an ultrasound scan on the scan range formed with a plurality of scanning lines; and
to determine a filter coefficient to be applied to a Moving Target Indicator (MTI) filter, on a basis of the plurality of eigenvalues obtained at mutually-different points in time, wherein
the processing circuitry
identifies a minimum value of an eigenvalue among the plurality of eigenvalues in a predetermined time period from a present time to a time that is a predetermined time earlier than the present time,
calculates a difference between the minimum value and an eigenvalue at the present time, and
determines the filter coefficient based on the difference.