| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ultrasonic image with high resolution for obtaining an accurate aberration correction value in the case that the aberration is large and the aberration correction is difficult. <P>SOLUTION: This method for forming an image by using a signal reflected from an object during transmitting ultrasound to the object comprises a first step of receiving a first signal reflected from the object when the first ultrasound is transmitted to the object, a second step of obtaining an aberration correction value based on the received first signal, a third step of receiving a second signal reflected from the object when a second ultrasound corrected based on the aberration correction value is transmitted to the object, and a fourth step of forming an image from the aberration correction value and the second signal. It is characterized in that the frequency of the second ultrasound is between 0.5 MHz and 20 MHz, and the center frequency of the first ultrasound is between 3/16 and 9/20 of the center frequency of the second ultrasound. <P>COPYRIGHT: (C)2010,JPO&INPIT |
