ULTRASONIC DIAGNOSTIC EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide ultrasonic diagnostic equipment capable of performing more accurate transmission sound pressure control by preventing a generation of a transmission pulse by cross talk in a channel where transmission is not performed.SOLUTION: The ultrasonic diagnostic equipment that transmits an ultrasonic wave to the inside of a subject from a plurality of vibrators 100a corresponding to a plurality of independent channels, and receives a reflection wave generated inside the subject with the vibrators 100a includes: a transmission control part for controlling channels where transmission is performed, and channels where transmission is not performed of the plurality of channels; and a drive pulse generation part 240a for generating a drive pulse for transmitting the ultrasonic wave from the vibrators and applying the generated drive pulse to the vibrators. The drive pulse generation part 240a sets output impedance of the drive pulse generation part 240a seen from the vibrators during a transmission period when the ultrasonic wave is transmitted from the vibrators 100a to the inside of the subject to a level lower than during a reception period when the reflection wave generated inside the subject is received with the vibrators.SELECTED DRAWING: Figure 3