CT post-processing technology of virtual endoscopy CTVE

2021/09/1818:56:03 science 704

virtual endoscope VE

VE is a technology that uses medical images as raw data, combines image processing, computer graphics, scientific computing visualization, and virtual reality technology to simulate traditional optical endoscopes.

is also called intracavity reconstruction technology, which refers to adjusting the CT threshold and tissue transparency to obtain a three-dimensional pseudo-color background image of the tissue.

advantages:

does not need to insert any equipment, is safe, comfortable, reproducible, and non-invasive

has a wide range of indications, and the success rate of intracavitary examination of the whole colon is high.

can be at any angle and direction from both ends of the obstruction Observe intracavitary anatomy and lesions

Real endoscopy can not reach the parts, can realize virtual endoscopic imaging realization

Disadvantages and shortcomings:

can not show the true color of intracavitary mucosal lesions and observe the changes of submucosal blood vessels;

requires high bowel preparation, residual fecal residue and insufficient inflation can cause misdiagnosis;

is difficult to achieve intracavitary flat lesions and lesions less than 5mm;

cannot perform intracavitary biopsy and surgical operations;

is for mucosal and The display of the details of the lesion surface is not as effective as a real endoscope.

Purpose:

is used to assist diagnosis, surgical planning, and achieve precise positioning of operations; it can be used for organ inspections with cavity structures.

Reconstruct three-dimensional images of the inner surface of cavities such as the gastrointestinal tract, respiratory tract, larynx, nasal cavity, large blood vessels, etc.

Colonography can accurately determine the infiltration range of the disease, and can properly determine the cure and relief of the disease To reduce the missed diagnosis rate, it is a very sensitive method for diagnosing early colon cancer

suitable for colon tumors, polyps; colon cancer and colon congenital abnormalities and other diseases

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