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Ultrasonic imaging device, treatment support system, and image processing method

A camera device, ultrasonic technology, applied in ultrasonic/sonic/infrasound equipment control, ultrasonic/sonic/infrasonic diagnosis, sonic diagnosis, etc., can solve the problem that the front end of the guide wire is not easy and has not yet reached popularization.

Pending Publication Date: 2021-05-18
HITACHI HEALTHCARE MFG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are also attempts to use ultrasound images as auxiliary images, it is not easy to delineate the tip of the guide wire with ultrasound, and it has not yet reached universal use.

Method used

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  • Ultrasonic imaging device, treatment support system, and image processing method
  • Ultrasonic imaging device, treatment support system, and image processing method
  • Ultrasonic imaging device, treatment support system, and image processing method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0057] In the present embodiment, the analyzing unit 353 estimates the distance in the lateral direction of the ultrasonic generating source 13 using the time difference between the arrival times of the ultrasonic waves (beacon ultrasonic signals) from the ultrasonic generating source 13 detected by the elements of the 1D array probe 20A. . In this embodiment, the case where the ultrasonic waves emitted by the ultrasonic wave generation source 13 are PA signals is also described as an example.

[0058] Such as Figure 5 As shown, when the guide wire 11 is inserted into the blood vessel (80A) and pushed toward the treatment site (target), if the plane along the blood vessel is taken as an imaging cross-section, the guide wire will be taken from the left and right sides of the imaging area. Travel in either direction to the camera area. Therefore, by estimating the distance in the lateral direction, it is possible to know to what extent the guide wire is approaching the target...

no. 2 approach

[0085] In the first embodiment and its modified example, the position (distance in the lateral direction) of the PA signal generation source 13 is estimated by using the time difference of the PA signal reaching each element of the ultrasonic probe, but the analyzing unit 353 of the present embodiment estimates the PA signal A three-dimensional position of the source 13 is generated. It is presumed that there are methods in which a three-dimensional position can be grasped by operating the 1D ultrasound probe 20A (first technique), and a technique in which an ultrasound probe 20B capable of grasping a three-dimensional position is used (second technique). In any case, the same technique as that of the first embodiment is employed for the lateral direction. First, the first method will be described.

[0086] [first approach]

[0087] Figure 8 It is a figure which shows the flow of the process of a 1st method. As shown in the figure, in this embodiment, as in the first embo...

no. 3 approach

[0098] In the first embodiment and the second embodiment, the analysis unit 353 estimates the position of the ultrasonic generation source using the difference between the elements (arrival time difference) of the time when the ultrasonic wave from the ultrasonic generation source reaches the ultrasonic probe, but in the present embodiment , the distance is estimated using the features of the image generated in the beacon ultrasonic image (PA image) corresponding to the time difference of arrival, specifically, using split. That is, in the ultrasonic imaging device according to the present embodiment, the ultrasonic image forming unit 351 has a function of forming an image of an ultrasonic source by using a beacon ultrasonic signal, and the analyzing unit 353 uses the image of the ultrasonic source generated by the ultrasonic image forming unit 351 to information to estimate the position of the ultrasonic generator 13.

[0099]The influence of the time difference of arrival oc...

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Abstract

In this treatment support means in which an ultrasonic imaging device and a guide wire on which a photoacoustic means is mounted are combined, the guide wire tip position is estimated using the difference in time of arrival of a photoacoustic wave arriving at an element array constituting an ultrasonic probe, or a change, dependent on the distance to an imaging region, in an image of a photoacoustic signal generating source, and ascertains a relationship between the imaging position and the guide wire tip position using the estimation result. It is thereby possible to visually and easily ascertain the relationship between a region (imaging region) in which an image can be obtained from reflected waves from a living body using the ultrasonic probe, and an insertion object, particularly the guide wire tip, which is outside the region.

Description

technical field [0001] The present invention relates to a technology that uses an ultrasonic imaging device to assist when inserting a guide wire equipped with an ultrasonic generating source such as photoacoustics into the body. Background technique [0002] Catheter therapy is widely used mainly in the treatment of vascular stenosis, etc., because it is a surgical method with less burden on patients than surgery such as thoracotomy. In catheter therapy, it is important to grasp the relationship between the region to be treated and the catheter, and X-ray fluoroscopy is used as an imaging method to assist this. Although there are also attempts to use ultrasound images as auxiliary images, it is not easy to delineate the tip of the guide wire with ultrasound, and it has not yet become popular. [0003] On the other hand, the following technology has also been proposed for puncture needles (Patent Document 1, Patent Document 2): a photoacoustic technology that generates a ph...

Claims

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Application Information

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IPC IPC(8): A61B8/13
CPCA61B8/13A61B8/0841A61B2090/3929A61B2017/3413A61B2090/3788A61B8/12A61B8/4218A61B8/445A61B8/4494A61B8/461A61B8/5207A61B8/54A61B17/3403
Inventor 田中智彦今井亮广岛美咲川畑健一栗原浩
Owner HITACHI HEALTHCARE MFG LTD
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