Method for co-plane judgment for two-dimensional ultrasound image and puncture needle

An ultrasound image and puncture needle technology, which is applied in ultrasonic/sonic/infrasonic diagnosis, sonic diagnosis, infrasound diagnosis and other directions, and can solve the problems of manual judgment of puncture needle, affecting the correctness of puncture needle, and annihilating needle body.

Active Publication Date: 2014-12-31
HARBIN ENG UNIV
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  • Abstract
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Problems solved by technology

[0005] Second, it is necessary to manually judge the position of the puncture needle on the ultrasound image
Although the needle tip appears as a bright area on the ultrasound image, the brightness of the needle body is lower than that of the needle tip, and the bright spot in th

Method used

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  • Method for co-plane judgment for two-dimensional ultrasound image and puncture needle
  • Method for co-plane judgment for two-dimensional ultrasound image and puncture needle
  • Method for co-plane judgment for two-dimensional ultrasound image and puncture needle

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Embodiment Construction

[0035] As shown in the figure, the method for judging the coplanarity between the two-dimensional ultrasonic image and the puncture needle of the present invention includes the following steps:

[0036] Step 1: Image preprocessing. Extract the imaging area on the ultrasound image, convert the color image into a grayscale image, and convert it into a binary image after threshold transformation;

[0037] Extract the imaging area on the ultrasound image: for a fan-shaped probe, extract a fan-shaped area, and for a rectangular probe, extract a rectangular area. The coordinates of these regions are determined by the parameter settings of the ultrasound imager.

[0038] Convert color images to grayscale images: Although the saved ultrasound images display grayscale objects, the image format is often stored as a color image, which is not convenient for further processing, so it is necessary to convert the image after extracting the imaging area from a color format in grayscale form...

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Abstract

The invention relates to a method for co-plane judgment for a two-dimensional ultrasound image and a puncture needle. An ultrasonic probe is held by one hand to scan the puncture needle in tissue and preserve the ultrasound image of the puncture needle in the tissue. The method is characterized by comprising the following steps: step 1, extracting an imaging region on the ultrasound image, converting a color image to a gray image, and converting to a binary image after threshold transformation; step 2, carrying out edge detection on the binary image obtained in the step 1, and determining a straight line on which the puncture needle is positioned through Radon transformation; step 3, positioning the position of the needle tip of the puncture needle; step 4, by judging whether a gray value of the intersection point of the straight line, on which the puncture needle is positioned and the ultrasound imaging region boundary is larger than a certain threshold value or not, determining whether the puncture needle is positioned in an imaging plane or not.

Description

technical field [0001] The invention relates to a method for judging the coplanarity between a two-dimensional ultrasonic image and a puncture needle. Background technique [0002] The image-guided surgery system uses medical imaging and computer graphics image technology to perform three-dimensional reconstruction and visualization of multi-modal image data of patients before surgery, obtain a three-dimensional model, formulate reasonable and quantitative surgical plans, and carry out preoperative simulation; Use the 3D space positioning equipment to register the image and the patient's physical space, map the patient's actual body position and the real-time spatial position of the surgical instrument to the patient's 3D image space, and collect and display the position of the surgical instrument in real time. Observe the relative positional relationship between the surgical instrument and the lesion in the three-dimensional image, and perform precise surgical treatment on ...

Claims

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Application Information

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IPC IPC(8): A61B8/00A61B19/00
Inventor 栾宽李金丛珊李海波孙小越
Owner HARBIN ENG UNIV
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