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Visualization method based on virtual coloscope

A colonoscopy and lens technology, applied in the field of visualization based on virtual colonoscopy, can solve the problems of inconvenient use and difficult control by doctors, and achieve the effect of various control methods.

Inactive Publication Date: 2006-06-14
SHANGHAI JIAO TONG UNIV
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AI Technical Summary

Problems solved by technology

The advantage of manual navigation is that it gives doctors a greater degree of participation. Doctors can freely choose to skip some areas or stay in areas of interest for careful observation. The disadvantage is that it is difficult to control and inconvenient for doctors to use.

Method used

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Embodiment Construction

[0014] 1. Three-dimensional reconstruction: the process of reconstructing a three-dimensional image from the raw data (two-dimensional slice data) read in by three-dimensional reconstruction technology. In the present invention, the medical data is mainly a sequence of CT slices. The slice size of a typical abdominal colon data is 512*512, and there are about 500 slices in total (the slice interval is 1.0mm). The 3D reconstruction process is to reconstruct these continuous slice sequences into a 3D volume data. The DICOM data reading realized by this system The input class is vtkDICOMImageReader, which reads slices of CT data and outputs a 3D image data in vtk format.

[0015] 2. Data segmentation: Segment the interesting part (such as the colon) from the whole data, which can not only significantly reduce the amount of processed data, but also provide guarantee for the automatic generation of navigation paths in the future.

[0016] Aiming at the relatively simple feature of ...

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Abstract

A visualizing method based on virtual colonoscope includes such steps as obtaining the fly path of virtual navigation by manually or automatically generating the path, combining the manual navigation with automatic navigation, on the basis of automatic navigation stopping the automatic fly at any time to get the control right to virtual lens for carefully observing the target region in any direction, and activating the automatic fly again. Its advantages are high freedom and high diagnosing reliabiligy.

Description

technical field [0001] The invention relates to a method in the field of medical image processing and application, in particular, a visualization method based on a virtual colonoscope. Background technique [0002] The virtual endoscope obtains patient image data through CT or MRI technology, and then uses 3D reconstruction technology to build a 3D image from the 2D data and realize visualization. It can also combine image segmentation technology and virtual endoscope navigation technology to provide three-dimensional and interactive three-dimensional browsing from different angles, so that doctors can fully mine various information in image data, greatly improving the accuracy and accuracy of diagnosis and treatment. convenience. Virtual navigation is the main way for doctors to use virtual endoscope to observe three-dimensional images. Generally, there are two methods: manual navigation and automatic navigation. [0003] Found through document retrieval to prior art, Zha...

Claims

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Application Information

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IPC IPC(8): A61B1/31A61B5/055A61B6/03G06T1/00G06T15/00G06T17/00
Inventor 顾力栩
Owner SHANGHAI JIAO TONG UNIV
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