Puncture position verification method and equipment based on X-ray image

Abstract

The invention provides a puncture position verification method and device based on an X-ray image, and the method comprises the steps: obtaining an X-ray image and a CT image sequence, and the X-ray image comprises a puncture needle image; a reconstructed two-dimensional image is generated according to initial reconstruction parameters and the CT image sequence, registration is conducted on the reconstructed two-dimensional image and the X-ray image, and the registration process comprises the steps that the reconstructed two-dimensional image is adjusted, so that the similarity measure of the adjusted reconstructed two-dimensional image and the X-ray image meets the expectation. Further determining the reconstruction parameter corresponding to the reconstructed two-dimensional image after adjustment; and mapping a key target determined based on the CT image sequence into the X-ray image by using the adjusted reconstruction parameter, wherein the key target is used for representing a predetermined implantation position of an in-vivo locator.

Description

technical field [0001] The invention relates to the field of medical image processing, in particular to a method and device for puncturing position verification based on X-ray images. Background technique [0002] Studies have shown that lung cancer is currently the tumor with the highest incidence and the highest annual fatality rate. The main treatment methods for lung cancer include surgery, radiotherapy and drug therapy, as well as the comprehensive application of these three methods. For all types of lung cancer, if the lesions are small, distant metastasis has not been found, and the patient's general condition is good, surgery should be used. According to the pathological type and surgical findings, radiation therapy and drug therapy should be combined. Wedge resection and segmentectomy are the current methods. Commonly used early-stage lung cancer treatments. [0003] The mainstay of radical treatment of early-stage lung cancer is "thoracoscopic lung segmental / subse...

AI Technical Summary

Problems solved by technology

Although scholars in the field have also explored various other positioning-guided surgery methods such as anatomical structure adjacency, organs, and blood vessel three-dimensional reconstruction guidance, none of them can replace CT positioning due to various factors such as difficulty in implementation and reliability.

[0004] In actual medical scenarios, the CT-guided puncture and implantation of positioning markers obviously needs to be carried out in the CT room. After the implantation of positioning markers is completed, the patient is then sent to the operating room for resection. heavy burden on all parties

At present, the two tasks of implanting positioning markers and performing resection cannot be completed in the environment of the operating room. The main obstacle is that the operating rooms of most hospitals are not equipped with CT equipment, and the common image acquisition equipment in the operating room is usually It is an X-ray machine, and the resolution of the X-ray image is very limited. First, the image is a two-dimensional image, and the depth information that can be expressed is very limited. In addition, for some small lesions, the X-ray image cannot even display the image of the lesion. , so it is impossible to confirm whether the puncture needle reaches the lesion accurately by observing the X-ray image

[0005] In summary, the existing technology cannot guide the work of puncture and implant positioning markers through X-ray images

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