Patent ID: 6923766

Claim:
An ultrasonic diagnostic apparatus that generates and displays an ultrasonic image of an object to be examined based on a reflection of an ultrasound having a main lobe and a side lobe, said apparatus comprising: an ultrasonic sending/receiving unit operable to generate the ultrasound, to receive the ultrasound reflected from the object, and to convert the received ultrasound into an electric signal; a first calculating unit operable to extract an N dimensional harmonics frequency component from the converted electric signal and to calculate a power of the signal of the N dimensional harmonics frequency component, wherein N is an integer greater than or equal to two; a second calculating unit operable to extract an M dimensional harmonics frequency component from the converted electric signal and to calculate a power of the signal of the M dimensional harmonics frequency component, wherein M is an integer greater than N and greater than or equal to three; a power ratio calculating unit operable to calculate a power ratio of the calculated power of the signal of the N dimensional harmonics frequency component to the calculated power of the M dimensional harmonics frequency component; an output controlling unit operable to control and output the electric signal of the N dimensional harmonics frequency component based on a value of the power ratio calculated by said power ration calculating unit; and an image display unit operable to generate and display an ultrasonic image based on the electric signal outputted from said output controlling unit.