Unlock instant, AI-driven research and patent intelligence for your innovation.

Ultrasonic diagnostic device

A diagnostic device, ultrasonic technology, applied in the directions of sonic diagnosis, infrasonic diagnosis, ultrasonic/sonic/infrasonic diagnosis, etc.

Inactive Publication Date: 2004-07-28
TOSHIBA MEDICAL SYST CORP
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, because the reflection point B3 of the ultrasonic pulse irradiation in the transmission timing interval ③ and the transmission timing interval ④ is different from the reflection point A3 in the transmission timing interval ① and the transmission timing interval ②, generally a32≠b31, so as figure 1 As shown in (d), in this case the influence of the residual echo remains

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrasonic diagnostic device
  • Ultrasonic diagnostic device
  • Ultrasonic diagnostic device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0089] In the first embodiment of the present invention, it is characterized in that, in THI, when the polarities of the drive waveforms are mutually reversed with respect to the predetermined direction and Nx times of transmission and reception are performed, Nx-1th transmission and reception are performed to obtain The received signal is added to the received signal obtained by Nxth transmission and reception to extract the higher harmonic component of the received signal.

[0090] (device configuration)

[0091] use figure 2 The block diagram of the figure shows the schematic structure of the whole apparatus in this embodiment.

[0092]The ultrasonic diagnostic apparatus 100 includes: an ultrasonic probe 1 that converts ultrasonic reflected waves (received ultrasonic waves) into received signals while transmitting ultrasonic pulses (transmitting ultrasonic waves) to the subject; The ultrasonic diagnostic apparatus main body 50 generates image data from the reception sign...

no. 2 Embodiment approach

[0161] Next, a second embodiment of the present invention will be described. In this embodiment, after transmitting and receiving twice with the polarity of the drive pulse alternately reversed with respect to the predetermined direction, the transmission of new ultrasonic waves is stopped, and only the deep reflected waves and multiple reflected waves received over the transmission timing interval are continued. . The effect of residual echo is then removed by summing all received signals obtained in the same direction.

[0162] Because the overall configuration of the device described in the second embodiment is different from that shown in the first embodiment figure 2 are the same, so its detailed description is omitted, and only Figure 9 to Figure 10 The procedure for generating image data will be described, Figure 9 is a flowchart showing an image data generation program.

[0163] The operator selects the THI mode on the input unit 7, and then sets the transmissio...

no. 3 Embodiment approach

[0193] Next, a third embodiment of the present invention will be described. According to the present embodiment, transmission and reception in the same direction are performed twice in the first transmission timing interval and the second transmission timing interval using the drive signal of the same polarity. Then, Ny times of ultrasonic reception are performed after the third transmission timing interval subsequent to this ultrasonic transmission and reception, and only the reception to obtain residual echo from the above-mentioned direction over the detection time is continued.

[0194] Next, by adding and subtracting the received signals obtained in the transmission timing interval of Ny+2, the received signals obtained from the tissue of the subject including the residual echo are canceled out to generate image data based on the received signals from the contrast agent. .

[0195] In order to simplify the description below, the received signal based on the ultrasonic re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An ultrasonic imaging apparatus, including an ultrasonic probe including an ultrasonic vibration element configured to transmit and receive an ultrasonic wave in a scanning direction in an object in which a contrast media has been injected; a transmission unit configured to apply successive drive pulses to the probe so as to transmit respective ultrasonic signals in respective rate sections; a reception unit configured to receive reflected ultrasonic signals, including first reflected ultrasonic signals produced by a first drive pulse in a first rate section and reflected back to the probe in the first rate section and in a second rate section subsequent to the first rate section; an operation unit configured to perform an operation including at least one of addition and subtraction of at least two of the first ultrasonic signals received during different rate sections; and a signal processor configured to produce image data based on the result of the operation performed by the operation unit. Plural driving pulses having alternating polarity may be applied to the probe in a same scan direction.

Description

technical field [0001] The present invention relates to an ultrasonic diagnostic apparatus, and in particular, to an ultrasonic diagnostic apparatus capable of obtaining a high-resolution ultrasonic image with less artifacts by eliminating the influence of residual echoes. Background technique [0002] An ultrasonic diagnostic device is an instrument that emits ultrasonic waves generated by an ultrasonic vibrator built in an ultrasonic probe into the subject, and receives reflected signals generated by the difference in acoustic impedance of the subject tissue by the ultrasonic probe and displays them on a monitor. [0003] Such an ultrasonic diagnostic device is widely used in functional examinations of the heart and morphological diagnosis of various organs because it can easily observe real-time two-dimensional images by simply touching the ultrasonic probe to the body surface. [0004] In the conventional ultrasonic image production method, the ultrasonic frequency most ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00A61B8/06
CPCA61B8/481
Inventor 挂江明弘平间信川岸哲也今村智久
Owner TOSHIBA MEDICAL SYST CORP