Angiography method

An angiography and sub-image technology, applied in the field of image processing in the medical field, can solve the problems of observation, long imaging time, unfavorable vascular imaging, etc., and achieve the effect of ensuring the imaging speed and improving the effect

Inactive Publication Date: 2016-06-08
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

MRA has the advantage of no radiation damage, but its imaging time is longer, and patients cannot be examined by MRA because of contraindications such as ferromagnetic substances.
[0004] The blood vessels in some parts are closely attached to the bones. The existing ang

Method used

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Examples

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Embodiment 1

[0029] Example 1: Please refer to figure 1 As shown, the angiography method in the embodiment of the present invention specifically includes the following steps:

[0030] Step S1. Obtain an enhanced image and a plain-scan image, and define a sub-image of the enhanced image and a sub-image of the scanned image. Defining can be interpreted as obtaining by cutting and other means. The enhanced image and the unenhanced image may be scanned by X-ray imaging equipment, such as CT (Computed Tomography, computerized tomography) equipment, and the enhanced image may be a contrast image obtained by enhanced CT scanning. Enhanced CT scanning includes but is not limited to intravenous injection of iodine-containing contrast agent (contrast agent) followed by CT scanning to increase the density difference between lesion tissue and adjacent normal tissue, thereby improving the display rate of lesion. Increased density of lesion tissue is called enhancement or enhancement. The mechanism is...

Embodiment 2

[0052] The angiography method of the present invention can also be applied to the cerebral angiography (DSA) or three-dimensional digital subtraction angiography (3DDSA) that utilizes the digital subtraction angiography machine to complete, and the difference between embodiment two and embodiment one mainly lies in: step S2 may also include combining the bone mask of the sub-image of the plain-scan image with the sub-image of the plain-scan image to obtain a sub-image of the plain-scan image with bone tissue removed.

[0053] Step S3 may also include combining the bone mask of the subimage of the enhanced image with the subimage of the enhanced image to obtain the subimage of the enhanced image with bone tissue removed; the subimage of the enhanced image with bone tissue removed subtracts the plain scan of the bone tissue Subgraphs of images to get subtracted images.

Embodiment 3

[0055] The angiographic method of the present invention can also be used to enhance MRA. The difference between the third embodiment and the first embodiment is that the bone mask is replaced with a mask of other tissues that need to be removed.

[0056] The angiography method of the above-mentioned embodiments of the present invention can be implemented in a computer-readable medium such as computer software, hardware or a combination of computer software and hardware. For hardware implementation, the embodiments described in this disclosure may be implemented on one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DAPDs), Programmable Logic Devices (PLDs) , field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, other electronic means for performing the functions described above, or a selected combination of the above means. In some cases, such embodiments may ...

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Abstract

The invention discloses an angiography method. The angiography method comprises the following steps: 1, obtaining a reinforced image and a plain scanned image, and limiting a sub graph of the reinforced image and a sub graph of the plain scanned image; 2, obtaining a bone reticle mask of the sub graph of the plain scanned image; 3, conducting registering on the sub graph of the reinforced image and the sub graph of the plain scanned image,, so that the spatial alternation relation between the corresponding sub graphs of the plain scanned image and the reinforced image is obtained, and positioning bone tissues on the sub graph of the reinforced image, so that a bone reticle mask of the sub graph of the plan scanned image; 4, combining the bone reticle mask of the sub graph of the reinforced image and the sub graph of the reinforced image, so that a blood vessel image is obtained. Through the arrangement, the blood vessel imaging effect and efficiency can be greatly improved, and the method facilitates disease diagnosis and treatment.

Description

technical field [0001] The invention relates to image processing in the medical field, in particular to an angiography method used in blood vessel inspection. Background technique [0002] Cerebrovascular disease is a common disease that seriously endangers human health. It can occur in people of different ages, especially middle-aged and elderly people. It has high morbidity, mortality, disability, recurrence, and complications. heavy burden of disease and so on. With the aging of the global population and the younger age of onset, the incidence of this disease is increasing year by year, and early diagnosis is of great significance to the prognosis of cerebrovascular disease. The occurrence of cerebrovascular diseases is mainly caused by vascular lesions, and vascular imaging can observe and diagnose vascular lesions in vivo, and has become an important basis for the diagnosis of cerebrovascular diseases. In recent years, new technologies and methods of vascular imaging ...

Claims

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Application Information

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IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/504A61B6/5205A61B6/5235
Inventor 于文君
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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