US 12,257,108 B2
Ultrasonic diagnostic apparatus and image processing apparatus
Takeshi Sato, Nasushiobara (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed on Jan. 30, 2023, as Appl. No. 18/161,114.
Claims priority of application No. 2022-012638 (JP), filed on Jan. 31, 2022.
Prior Publication US 2023/0240658 A1, Aug. 3, 2023
Int. Cl. A61B 8/08 (2006.01); A61B 8/00 (2006.01); A61B 8/06 (2006.01); G06T 7/20 (2017.01)
CPC A61B 8/488 (2013.01) [A61B 8/06 (2013.01); G06T 7/20 (2013.01); G06T 2207/10132 (2013.01); G06T 2207/30104 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An ultrasonic diagnostic apparatus, comprising:
an ultrasonic probe that repeatedly performs scanning in which a plane wave or a diffused wave is continuously transmitted a plurality of times in a same direction and in a plurality of directions; and
processing circuitry that
repeatedly performs processing of applying, for each of the plurality of directions, a moving target indicator (MTI) filter to an unequal interval data sequence including a plurality of data adjacent on a time axis in the same direction obtained by the scanning, and extracting a blood flow signal in each of the plurality of directions,
repeatedly performs processing of generating an autocorrelation signal by performing an autocorrelation operation on a plurality of blood flow signals in the same direction and for each of the plurality of directions, and
repeatedly estimates a velocity value of blood flow based on a complex signal generated by performing complex addition of a plurality of autocorrelation signals generated for the plurality of directions.