Three-dimensional reconstruction method scanning tomographic images through in-tube stepping one-way beams

Abstract

The invention discloses a three-dimensional reconstruction method scanning tomographic images through in-tube stepping one-way beams. For the tomographic images scanned through the in-tube stepping single-mode fiber beams, a linear stepping speed is set in a stepping motor, the one-dimensional space relative linear position of a pixel point is determined, on the condition that a stepping motor rotation speed is determined, for a two-dimensional image pixel point of each image, pole coordinate transformation is carried out to determine the position of the pixel point on a two-dimensional plane, according to the plane position information, the static position of a three-dimensional space opposite to the pixel point is determined. As beam reflection intensities are different in gray values on each tomographic image, a distance between two adjacent images is calculated, a gray difference calculation mode is employed to carry out interpolation, and three-dimensional image characteristics can be more visually represented. The method is advantaged in that in-tube image information extraction can be carried out, reconstructed tube inner wall images have high precision, and the great auxiliary effect on medical interventional operation cardiovascular inner wall complex shape diagnosis and organization characteristic determination is realized.

Description

technical field [0001] The invention relates to the technical field of three-dimensional reconstruction and visualization, in particular to a method for three-dimensional reconstruction of tomographic images scanned by stepping unidirectional beams in a tube. Background technique [0002] In the field of medical image processing, there are many extraction methods of tomographic images, especially angiography used in coronary arteries, magnetic resonance imaging (MRI, Magnetic Resonance Imaging) used in cardiovascular blockage bypass, and electronic detection used in detection. Computed tomography (CT, Computed Tomography) method has been widely used. [0003] The three-dimensional reconstruction of tomographic data is to restore the three-dimensional structure of the detected object from a series of two-dimensional tomographic images. The three-dimensional reconstruction and visualization of medical tomographic images can provide doctors with more objective and realistic ti...

AI Technical Summary

Problems solved by technology

It is characterized in that the method comprises the following steps: (1) scanning the detected object through a CT system; (2) reconstructing the scanning data of the CT system through a pre-reconstruction module; (3) obtaining a tomographic image corresponding to the view through parameter adjustment (4) Obtain the three-dimensional image of the measured object through the reconstruction module. The defect of this method is that only the area of ​​interest is reconstructed. Although the calculation amount of the program is reduced, the accuracy of the reconstructed area alone cannot Guarantee the true shape of the target object restoration, which may lead to the loss of some positions of the target object

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