Construction method and device of three-dimensional model, image monitoring method and device

Abstract

A three-dimensional model construction method and device, and an image monitoring method and device. The three-dimensional model construction method comprises the steps of: 1) acquiring a monitoring image (a real-time two-dimensional ultrasonic image during treatment) of a tissue within a monitoring region during the treatment of a patient in real time, and acquiring a diagnosis image (a two-dimensional ultrasonic / MR / CT image acquired before treatment) similar to feature information about a monitoring image tissue from an anatomical model of the patient; 2) registering the monitoring image and the diagnosis image, and establishing a registration relationship to obtain a two-dimensional registration image; and 3) constructing a registered three-dimensional model according to the two-dimensional registration image. The constructed three-dimensional model can realize relatively high registration with the monitoring image during the treatment of the patient, and display clear tissue boundary and tissue texture information at the same time, so as to assist a doctor to conduct ultrasonic locating and monitoring.

Description

technical field [0001] The invention belongs to the field of medical technology, and relates to a three-dimensional model construction method, a three-dimensional model construction device, an image monitoring method and an image monitoring device. Background technique [0002] In the process of MR / CT-guided ultrasound-monitored HIFU noninvasive treatment and needle minimally invasive treatment, doctors use ultrasound to locate and monitor the position of the target area. However, ultrasound images (two-dimensional images) are characterized by obvious tissue boundaries, while tissue texture Very vague, MR / CT-guided ultrasound monitoring is used for 3D reconstruction of the patient’s ultrasound / MR / CT images, and realizes the 3D registration of the 3D model and the patient’s body position during treatment according to various registration techniques, and then obtains the ultrasound scanning surface The corresponding MR / CT cutting images provide doctors with clear tissue textur...

AI Technical Summary

Problems solved by technology

Some scholars propose to use digital human body to guide ultrasonic monitoring. However, the data source of digital human body is generally to use digital camera to slice and shoot the corpse model. The whole human body model can be established by three-dimensional reconstruction in the computer. If you want to establish For the tissue anatomical model of a specific part, different tissues need to be manually or automatically outlined, and then color-matched for different tissues. After three-dimensional reconstruction, the tissue anatomical model can be obtained, and the positional relationship between different tissues can be adjusted separately. But the model generally does not have tissue texture information

At the same time, the digital human body can only be used as a common model, and cannot provide patient-specific characteristic information

Therefore, the use of digital human body to guide ultrasound monitoring of HIFU non-invasive treatment and needle minimally invasive treatment has limitations that cannot be adapted to clinical practice.

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