Patent ID: 11911221
Assignee: KONICA MINOLTA, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 11:
12. A control method of an ultrasound diagnostic apparatus that transmits ultrasound toward an inside of a specimen and receives a reflection wave therefrom to generate a blood flow image of the specimen, the control method comprising:
a first process of calculating a plurality of eigenvectors by performing principal component analysis on a time-series reflection wave data group in a predetermined region in the specimen obtained at execution of a color flow mode;
a second process of calculating a principal frequency component of a time direction represented by the plurality of eigenvectors by performing analyzation on each of the plurality of eigenvectors, the principal frequency component of the each of the plurality of eigenvectors is an average frequency of time variation of an observation object position represented by the each of the plurality of eigenvectors;
a third process of determining a reduction rate of each of the plurality of eigenvectors on a basis of the principal frequency component of each of the plurality of eigenvectors and a clutter component reduction condition that defines a reference frequency for reduction of a clutter component;
a fourth process of calculating a filter coefficient for reduction of the clutter component on a basis of the plurality of eigenvectors, and the reduction rate corresponding to each of the plurality of eigenvectors; and
a fifth process of generating blood flow image data by applying the filter coefficient to the time-series reflection wave data group.