Method and device for generating digital subtraction angiography

Abstract

The invention discloses a method and device for generating a digital subtraction angiography. The method comprises the steps of injecting a contrast agent into a human body, exposing the human body by a detecting instrument, and performing acquisition to obtain an original image; introducing the original image into a digital low pass filter, smoothing the original image, and obtaining a mask image; and inputting the original image and the mask image into a subtracter to carry out subtraction processing, and obtaining the digital subtraction angiography. The device is used for implementing the method. By utilization of the digital processing technology, the mask image is obtained, only single exposure is required, and the device is simple in structure and easy to operate.

Description

technical field

[0001] The invention belongs to the technical field of medical detection equipment, and in particular relates to a method and equipment for generating digital subtraction images for interventional operations. Background technique

[0002] In the case of clinical interventional surgery, doctors usually need to take two exposures of the patient's body to determine the specific location of the interventional surgery site. The procedure is to take the first exposure to obtain a masked image of the body part, inject the contrast agent, and perform the second exposure to obtain the image injected with the contrast agent. The image of blood vessels filled with contrast agent is subtracted from the mask image to obtain a digital subtraction image (Digital Subtraction Angiography, DSA for short). The problems with this application mode are:

[0003] 1. Excessive use of contrast medium. Every time DSA is performed, the patient needs to be injected with a contrast ag...

Examples

Embodiment 1

[0055] Such as Figure 4 As shown, when the patient’s digital subtraction image is needed for adjuvant treatment, the doctor starts the contrast agent injector to push the contrast agent into the blood vessel of the patient. After the contrast agent flows in the blood vessel and reaches the filling state, the X-ray exposure is started. The X-rays emitted by the X-ray tube pass through the patient's body to form an original image on the flat panel detector (FPD), and the flat panel detector transmits the original image to the image processing system through the video acquisition card.

[0056] The image processing system includes console, GPU and monitor. The console reads the image data from the cache of the video capture card and sends it to the graphics processor GPU for real-time mask generation calculation. The calculated DSA image is sent to the graphics card by the graphics processor GPU and displayed by the graphics card DSA image.

[0057] The above-mentioned X-ray t...

Embodiment 2

[0059] Such as Figure 5 As shown, the difference from Embodiment 1 is that after the graphics processing unit (GPU) generates the DSA image, it is returned to the console, and the console sends the DSA image to the optical disc drive, and the DSA result image is burned to the optical disc by the optical disc drive middle. The optical disc drive can be integrated on the console or used as a discrete device, and the optical discs are common computer consumables such as VCD and DVD.

technical field

[0001] The invention belongs to the technical field of medical detection equipment, and in particular relates to a method and equipment for generating digital subtraction images for interventional operations. Background technique

[0002] In the case of clinical interventional surgery, doctors usually need to take two exposures of the patient's body to determine the specific location of the interventional surgery site. The procedure is to take the first exposure to obtain a masked image of the body part, inject the contrast agent, and perform the second exposure to obtain the image injected with the contrast agent. The image of blood vessels filled with contrast agent is subtracted from the mask image to obtain a digital subtraction image (Digital Subtraction Angiography, DSA for short). The problems with this application mode are:

[0003] 1. Excessive use of contrast medium. Every time DSA is performed, the patient needs to be injected with a contrast ag...

Examples

Embodiment 1

[0055] Such as Figure 4 As shown, when the patient’s digital subtraction image is needed for adjuvant treatment, the doctor starts the contrast agent injector to push the contrast agent into the blood vessel of the patient. After the contrast agent flows in the blood vessel and reaches the filling state, the X-ray exposure is started. The X-rays emitted by the X-ray tube pass through the patient's body to form an original image on the flat panel detector (FPD), and the flat panel detector transmits the original image to the image processing system through the video acquisition card.

[0056] The image processing system includes console, GPU and monitor. The console reads the image data from the cache of the video capture card and sends it to the graphics processor GPU for real-time mask generation calculation. The calculated DSA image is sent to the graphics card by the graphics processor GPU and displayed by the graphics card DSA image.

[0057] The above-mentioned X-ray t...

Embodiment 2

[0059] Such as Figure 5 As shown, the difference from Embodiment 1 is that after the graphics processing unit (GPU) generates the DSA image, it is returned to the console, and the console sends the DSA image to the optical disc drive, and the DSA result image is burned to the optical disc by the optical disc drive middle. The optical disc drive can be integrated on the console or used as a discrete device, and the optical discs are common computer consumables such as VCD and DVD.

Images