Patent ID: 11969296
Assignee: FUJIFILM CORPORATION
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A  G

Claim 5:
6. A method of controlling an ultrasound diagnostic apparatus, the method comprising:
transmitting a set of a first ultrasonic pulse and a second ultrasonic pulse having phases inverted from each other on the same scanning line from a transducer array into a subject N times equal to or greater than at least two times;
acquiring reception signals based on a signal output from the transducer array received an ultrasound echo generated in the subject, based on the set of the first ultrasonic pulse and the second ultrasonic pulse transmitted N times;
converting the reception signals to IQ signals by performing quadrature detection in a determined range on the reception signals which are acquired, to acquire an IQ signal string corresponding to the first ultrasonic pulse transmitted N times from the transducer array and an IQ signal string corresponding to the second ultrasonic pulse transmitted N times from the transducer array;
acquiring image signals with a fundamental component eliminated by adding IQ signals corresponding to the first ultrasonic pulse and IQ signals corresponding to the second ultrasonic pulse using the acquired IQ signal strings;
calculating at least one of an autocorrelation, a variance value of a phase difference or a variance value of an amplitude as index values of a bubble signal likelihood representing a probability of a bubble of a contrast medium, based on the acquired IQ signal strings corresponding to the reception signals which are acquired; and
generating an ultrasound image based on the index values of the bubble signal likelihood which are calculated and the image signals which are acquired, where the index values of the bubble signal likelihood are mapped at corresponding positions on the ultrasound image and are represented by saturations of a color according to a magnitude of the index values of the bubble signal likelihood.