Partition method for kidney artery CT contrastographic picture vessels based on three-dimensional Zernike matrix
A technology of contrast images and blood vessels, which is applied in the field of blood vessel segmentation and image processing of renal arterial CT contrast images, can solve the problems of over-segmentation and under-segmentation of blood vessels, and achieve the effect of solving under-segmentation and over-segmentation and ensuring segmentation accuracy
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[0048] The present invention will be further explained below in conjunction with the drawings.
[0049] Affected by the contrast agent, the blood vessels in the renal artery CT angiography images will show higher CT values (such as figure 1 Shown). Due to the difference in image acquisition machine, contrast injection dosage and human body structure, the CT value of the end arterial blood vessel will be relatively low, and it will be closer to the CT value of the surrounding tissue. On the other hand, there will be kidney stones near the blood vessel. The method of obtaining arterial blood vessels by the growth of the threshold region is troublesome, that is, the problems of blood vessel over-segmentation and under-segmentation (such as image 3 Shown). The threshold is not fixed and needs to be fine-tuned, which greatly reduces the doctor's work efficiency. At the same time, the accuracy of segmentation of blood vessel ends obtained through regional growth is not high.
[0050]...
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