Ultrasound imaging system, operation method of ultrasound imaging system, and computer-readable recording medium

An operation method comprising:

• for each ultrasound image of a plurality of ultrasound images that are chronologically consecutive:
• calculating correlation values for each area of plural areas set in the each ultrasound image, each of the correlation values representing similarities between pixel values of one of a plurality of calculation positions in a previous ultrasound image and pixel values of the each area;
• calculating a ratio of a largest correlation value and a smallest value of the correlation values calculated for the each area of the plural areas as a contrast value for the each area of the plural areas;
• determining a spatial distribution of the contrast values of the plurality of areas in the each ultrasound image;
• and
• identifying a multiple-reflection area in the spatial distribution of the each ultrasound image, the multiple-reflection area including areas of the plurality of areas having a predetermined contrast value;
• and
• selecting an ultrasound image from the plurality of ultrasound images having a smallest multiple-reflection area of the multiple-reflection areas of the plurality of ultrasound images.

A non-transitory computer-readable recording medium with an executable program stored thereon, the executable program causing a computer to at least execute:

• for each ultrasound image of a plurality of ultrasound images that are chronologically consecutive:
• calculating correlation values for each area of plural areas set in the each ultrasound image, each of the correlation values representing similarities between pixel values of one of a plurality of calculation positions in a previous ultrasound image and pixel values of the each area;
• calculating a ratio of a largest correlation value and a smallest value of the correlation values calculated for the each area of the plural areas as a contrast value for the each area of the plural areas;
• determining a spatial distribution of the contrast values of the plurality of areas in the each ultrasound image;
• and
• identifying a multiple-reflection area in the spatial distribution of the each ultrasound image, the multiple-reflection area including areas of the plurality of areas having a predetermined contrast value;
• and
• selecting an ultrasound image from the plurality of ultrasound images having a smallest multiple-reflection area of the multiple-reflection areas of the plurality of ultrasound images.