Method and system for liver segmentation

Abstract

The invention relates to the field of medical image processing and provides a liver segmentation method and a system thereof. The method comprises the following steps of: segmenting medical image sequences of a liver to obtain segmentation images of the liver and a portal vein; obtaining a center line and a radius of the portal vein; making different marks on different segments of the liver in the center line of the portal vein; segmenting the liver based on marked center line of the portal vein. Therefore, the invention provides the method and the system for individualized liver segmentation and provides good security for clinical surgery.

Description

technical field [0001] The invention relates to the field of medical image processing, in particular to a liver segmentation method and system thereof. Background technique [0002] The liver is one of the main organs where tumors are prone to occur. With the advancement of surgical techniques, the surgical resection rate of liver tumors has increased significantly. As a solid organ, the location and size of the lesion in the liver can only be known through imaging data, so that the design of the surgical plan can be carried out. The development of CT (computed tomography, computerized tomography), MRI (Magnetic Resonance Imaging, magnetic resonance imaging) and other imaging technologies has greatly promoted the development of liver surgery, enabling many complex liver operations to be performed. However, due to the complex pipeline system inside the liver and its physiological and pathological variations, the difficulty of liver surgery is determined by hand speed. Moreo...

AI Technical Summary

Problems solved by technology

[0005] Although Couinaud's liver segment division method is more practical, it also has obvious defects. Because it is the result of the study of isolated casts, it is not suitable for individual differences in clinical individual patients. There are great anatomical differences, and the boundary between segments is not a simple plane, so the Couinaud liver segment division method is not completely suitable for practical application

[0006] In the Chinese patent with the application number 200810197660.8 and the title of the invention "a liver segmentation method and system based on CT image", it elaborates in detail the segmentation data of the liver and blood vessels obtained from the CT image, and performs liver segmentation according to the portal vein. However, this patent does not conduct research on the relationship between the liver and the portal vein, relying on manual interaction to grade blood vessels, a process that requires the experience and knowledge of doctors

Therefore, according to the use of different doctors, the segmentation results of the liver may be different, and its accuracy is difficult to guarantee

[0007] In summary, the existing liver segmentation technology obviously has inconvenience and defects in actual use, so it is necessary to improve it

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