JPH04352953A - Ultrasonic diagnostic apparatus - Google Patents

Abstract

PURPOSE:To regulate the acoustic output so as to ensure the safety of an inspected person by automatic control for optimizing the ultrasonic transmission output level of an ultrasonic diagnostic apparatus in every diagnostic area. CONSTITUTION:A system control portion 8 transfers a diagnostic area selected by key operation of a console panel 7 and address data decided by various kinds of setting conditions of an ultrasonic probe to a memory 9. The transmission output control data optimized for the diagnostic area and various kinds of setting conditions is read out from the memory 9 and input to the system control portion 8. The transmission output control data is transmitted to a transmission output voltage control circuit 5 through a D/A converter 6. A transmission circuit 3 is adapted to supply the optimum transmission output to an ultrasonic probe 1 according to the control voltage from the transmission output voltage control circuit 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic diagnostic apparatus for non-invasively obtaining tomographic images of a living body.

0002

[Prior Art] Conventionally, this type of ultrasonic diagnostic equipment has been equipped with a means for driving an ultrasonic probe and a means for controlling its transmission output level. It is now possible to change the acoustic output of the ultrasonic waves incident on the device.

0003

[Problems to be Solved by the Invention] However, the conventional ultrasonic diagnostic equipment described above does not have a means for recognizing in which diagnostic area the equipment is used, and the transmission output level is controlled independently of the diagnostic area. . In addition, Doppler blood flow measurement does not have a means to control the transmission output level according to all combinations of the transmission pulse repetition frequency, the transmission pulse frequency, the type of ultrasound probe, and the depth of the observation site. Therefore, the transmission output level is fixed unless the person operating the apparatus performs frequent operations in accordance with the above conditions of use, and there is a risk of giving the subject more acoustic output than necessary.

[0004] The present invention solves such conventional problems, and the device automatically self-regulates the transmission output level and automatically selects the optimum transmission output level under all usage conditions. The purpose is to provide an excellent ultrasonic diagnostic device that can perform

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a means for recognizing a diagnostic region, a type of ultrasound probe, a transmission pulse repetition frequency, a transmission pulse frequency, and the depth of an observation site. , a memory for storing control data for obtaining an optimal transmission output level using a diagnostic region as a parameter, and means for driving an ultrasound probe in accordance with the output of this memory.

[0006]

[Operation] Therefore, according to the present invention, the means for recognizing the diagnostic region allows the operator of the device to easily determine the type of ultrasonic probe, the transmission pulse repetition frequency, the transmission pulse frequency, etc. by simply setting the diagnostic region. Automatically controls the transmission output level according to each and every combination of the depth of the observation site,
Acoustic output that is safe for the subject can be obtained.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. In FIG. 1, 1 is an ultrasonic probe, 2 is a receiving circuit into which the echo signal from the ultrasonic probe 1 is input, 3 is a transmitting circuit for driving the ultrasonic probe 1, and 4 is a transmitting circuit. Trigger pulse generation circuit, 5 is a transmission output voltage control circuit, 6 is a D/
A converter, 7 is an operation panel, 8 is a system control unit,
9 is a memory that stores transmission output control data.

The transmission output control data includes the diagnosis area, the type of ultrasound probe used, the transmission pulse repetition frequency,
This is control data for giving an optimal transmission output preset according to setting conditions such as the transmission pulse frequency and the depth of the observation site, and the memory 9 can read address data determined by each of the above setting conditions. Lookup table memory etc. can be used.

Next, the operation of the above embodiment will be explained. In this embodiment, the diagnostic region is selected by key operation on the operation panel 7, and the system control unit 8 controls the type of ultrasound probe 1 attached to the device, the transmission pulse repetition frequency, the transmission pulse frequency, and the observation region. The address data determined by the depth and each setting condition of the selected diagnostic area is transferred to the memory 9, and the memory 9 reads predetermined transmission output control data according to this address data and inputs it to the system control unit 8. do.

The system control unit 8 transfers the transmission output control data to the D/A converter 6, and the output of the D/A converter 6 is sent to the transmission output voltage control circuit 5 with an accuracy determined by the resolution of the D/A converter 6. and generates a control voltage for controlling the transmit power. The transmission circuit 3 receives the transmission trigger pulse from the transmission trigger pulse generation circuit 4 and drives the ultrasound probe 1 with a transmission output determined by the control voltage from the transmission output voltage control circuit 5.

As described above, according to the above embodiment, the transmission output is automatically set in accordance with the transmission output control data in the memory 9 by simply setting the diagnostic area on the operation panel 7. This has the effect that safe acoustic output can always be provided to the subject under any setting conditions.

0012

[Effects of the Invention] As is clear from the above embodiments, the present invention is equipped with means for recognizing a diagnostic area and a memory for storing optimal transmission output control data under all setting conditions of the device. Since the transmission output can be automatically controlled without frequent operations, it has the effect of always providing safe acoustic output to the subject.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an ultrasonic diagnostic apparatus according to an embodiment of the present invention.

[Explanation of symbols]

1 Ultrasonic probe 3 Transmission circuit 5 Transmission output voltage control circuit 6 D/A converter 7 Operation panel 8 System control section 9. Memory

Claims (2)

[Claims] 1. A means for setting a diagnostic region, a memory storing transmission output level control data for obtaining an ultrasound transmission output level optimized for each diagnosis region, and an ultrasonic detector according to the output of the memory. An ultrasonic diagnostic device comprising means for driving a probe. 2. The ultrasonic wave according to claim 1, wherein the transmission output level control data is read out using each of the type of ultrasound probe, transmission pulse repetition frequency, transmission pulse frequency, depth of the control region, and diagnostic region as parameters. Diagnostic equipment.