| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic apparatus which can be easily manufactured at a low cost, and includes an individual control function of a voltage applied to a vibrator.SOLUTION: An ultrasonic diagnostic apparatus which outputs pulse signals respectively to a plurality of vibrators to make the vibrators emit ultrasonic waves, and acquires reception signals based on the ultrasonic waves received by the vibrators, includes: a signal generation unit for generating a pulse signal with a predetermined voltage amplitude; a plurality of amplitude adjustment units for individually changing the voltage amplitudes of the pulse signals output to the plurality of vibrators; and a control unit for outputting control signals so as to respectively control change amounts of the voltage amplitudes. Each of the amplitude adjustment units includes a plurality of resistance elements and a switching section for respectively controlling voltages applied to the plurality of resistance elements. The control unit changes loads of the amplitude adjustment units by outputting the control signals for setting the combination of on and off by a switching section to apply the pulse voltage according to the amplitude of the ultrasonic wave emitted from each of the vibrators to the vibrators. |
