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X-ray image intensifier dental machine panorama generation method

An image intensifier, X-ray technology, applied in the field of medical devices, can solve the problems of distortion and overlapping of perspective images

Inactive Publication Date: 2015-01-21
NANJING PERLOVE RADIAL VIDEO EQUIP
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  • Abstract
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Problems solved by technology

[0004] The object of the present invention is: a kind of panorama generation method of the dental cone beam CT based on image intensifier acquisition system, its acquisition system scanning track is circular track, has reduced hardware cost with respect to U-shaped curved surface scanning track, based on CT three-dimensional volume data Realize the panoramic image, that is, the surface fault, change the number of surfaces according to actual needs, extract and reconstruct the tooth surface in the three-dimensional volume data, solve the problem of perspective image deformation and overlap, and improve the accuracy of diagnosis

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Embodiment Construction

[0017] The implementation of the present invention provides a method for generating a panoramic image of a dental machine with an image intensifier, which can obtain the panoramic image of the dental machine through the three-dimensional volume data generated by the projection sequence collected by the image intensifier acquisition system.

[0018] The method flow is as follows figure 1 As shown, the specific steps are as follows:

[0019] 1. Apply the FDK algorithm of cone-beam CT circular trajectory to generate three-dimensional volume data from sequence images. The specific method is as follows:

[0020] The reconstructed 3D volume data is ,but ,in, is the weight function, is the cosine of the incident angle of the ray, For projection data, Slope filter convolution kernel, l, g, angle are the geometric parameters of the projection image, x, y, z are the pixel coordinates of the volume data.

[0021] Generate the dental mold frame (1), the specific implementati...

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Abstract

The invention relates to an X-ray image intensifier dental machine panorama generation method and belongs to the medical apparatus technology field. The method is characterized by comprising four steps that: step 1, three-dimensional data is generated by images acquired by an X-ray image intensifier; step 2, multiple frames of curved surface images are extracted in the three-dimensional data by utilizing a dental model framework; step 3, fusion of multi-frame images is carried out by utilizing a fusion method; step 4, the images after fusion are intensified by utilizing an intensifying method. The method is advantaged in that: the tooth curved surface tomography images can be extracted by utilizing the three-dimensional CT data, problems of deformation of the perspective images and overlapping are solved, and diagnosis precision is further improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method for generating a panoramic view of an X-ray dental machine, in particular to a method for generating a panoramic view of an X-ray image intensifier dental machine. Background technique [0002] At present, the dental panoramic X-ray machine is fast, convenient and flexible, and has been widely used in the field of dental diagnosis and plastic surgery. The traditional dental panoramic machine scans the U-shaped curved surface trajectory of the teeth, obtains the perspective image, and stitches and synthesizes the panoramic image. The image is synthesized through the perspective image, so the generated panoramic image, that is, the dental curved tomographic image, has the inherent overlapping and deformation problems of the perspective image. [0003] The acquisition system of the traditional panoramic machine is mostly a flat-panel detector acquisition system; the...

Claims

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Application Information

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IPC IPC(8): G06T5/40G06T5/50G06T17/00
Inventor 李劲生吴琨
Owner NANJING PERLOVE RADIAL VIDEO EQUIP
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