US 11,701,091 B2
Ultrasound analysis apparatus and method for tissue elasticity and viscosity based on the hormonic signals
Yasunori Honjo, Utsunomiya (JP); Masaki Watanabe, Utsunomiya (JP); Tetsuya Kawagishi, Nasushiobara (JP); and Keita Yonemori, Utsunomiya (JP)
Assigned to Canon Medical Systems Corporation, Otawara (JP)
Filed by Canon Medical Systems Corporation, Otawara (JP)
Filed on Feb. 22, 2019, as Appl. No. 16/282,509.
Claims priority of application No. 2018-030902 (JP), filed on Feb. 23, 2018; and application No. 2019-028443 (JP), filed on Feb. 20, 2019.
Prior Publication US 2019/0261953 A1, Aug. 29, 2019
Int. Cl. A61B 8/08 (2006.01); A61B 8/15 (2006.01); A61B 8/00 (2006.01); G01S 15/89 (2006.01); A61B 8/14 (2006.01); A61B 17/34 (2006.01); G06T 7/11 (2017.01); G06T 7/00 (2017.01); G01S 7/52 (2006.01); A61B 17/00 (2006.01); A61B 90/00 (2016.01); A61B 5/15 (2006.01)
CPC A61B 8/5207 (2013.01) [A61B 8/085 (2013.01); A61B 8/0841 (2013.01); A61B 8/145 (2013.01); A61B 8/15 (2013.01); A61B 8/4477 (2013.01); A61B 8/4494 (2013.01); A61B 8/461 (2013.01); A61B 8/463 (2013.01); A61B 8/466 (2013.01); A61B 8/481 (2013.01); A61B 8/483 (2013.01); A61B 8/485 (2013.01); A61B 8/5223 (2013.01); A61B 8/5246 (2013.01); G01S 7/52022 (2013.01); G01S 7/52038 (2013.01); G01S 7/52042 (2013.01); G01S 7/52071 (2013.01); G01S 7/52074 (2013.01); G01S 7/52077 (2013.01); G01S 7/52085 (2013.01); G01S 15/8915 (2013.01); G06T 7/0012 (2013.01); G06T 7/11 (2017.01); G06T 7/97 (2017.01); A61B 5/150748 (2013.01); A61B 8/0891 (2013.01); A61B 8/469 (2013.01); A61B 2017/00106 (2013.01); A61B 2017/3413 (2013.01); A61B 2090/378 (2016.02); G06T 2207/10132 (2013.01); G06T 2207/20224 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An analysis apparatus, comprising:
processing circuitry configured to:
generate a harmonic signal based on a reception signal that is collected by an ultrasound probe, and generate a fundamental wave signal based on the reception signal, the ultrasound probe transmitting ultrasound to a subject, receiving a reflected wave of the ultrasound generated in the subject, and generating the reception signal based on the reflected wave, the harmonic signal corresponding to a harmonic component of the reflected wave, the fundamental wave signal corresponding to a fundamental wave component of the reflected wave,
calculate a first index value indicating tissue properties of the subject based on the harmonic signal, and calculate a second index value indicating the tissue properties based on the fundamental wave signal;
generate an analysis result based on the first index value and the second index value;
display the analysis result;
wherein
the processing circuitry is further configured to:
generate a first tissue property image corresponding to a first region in a region of interest based on the first index value;
generate a second tissue property image corresponding to a second region in the region of interest based on the second index value, the second region being different from the first region;
generate a third tissue property image corresponding to the region of interest as the analysis result by synthesizing the first tissue property image and the second tissue property image
calculate a first displacement caused in the subject by using phase information of the harmonic signal;
calculate the first index value based on the first displacement;
calculate a second displacement caused in the subject by using phase information of the fundamental wave signal; and
calculate the second index value based on the second displacement.