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Calibration and splice method of over-long specification X ray irradiation image

A calibration method and image technology, applied in image analysis, image data processing, instruments, etc., to achieve low cost, high precision and accuracy, and flexible use

Inactive Publication Date: 2008-11-19
SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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Problems solved by technology

[0006] The purpose of the present invention is to address the deficiencies of the existing X-ray image stitching methods, and propose a method for calibrating and stitching ultra-long X-ray radiographic images, which is used to solve the clinical problem of ultra-long X-ray radiographic images such as the whole lower limbs and the whole spine. Technical problems of precise splicing and measurement

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  • Calibration and splice method of over-long specification X ray irradiation image
  • Calibration and splice method of over-long specification X ray irradiation image
  • Calibration and splice method of over-long specification X ray irradiation image

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Embodiment Construction

[0020] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0021] The following embodiment is to stitch together an X-ray image of the whole lower limbs for measuring the weight-bearing line of the whole lower limbs.

[0022] 1. Put two special steel rulers (such as figure 1 shown) placed parallel to both sides of the whole lower limbs of the subject, the whole lower limbs to be photographed are located at the center line of the X-ray, and the subject remains in a still position. Considering the thickness of the human body, the two specially-made steel rulers are raised to the same height as the bones of the lower limbs of t...

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Abstract

The invention relates to a method for realizing the regulating and the splicing of an extra-long specification X-ray image in the medical radiology image field. The regulating and splicing method has the steps as follows: in the first step, two tailored version steel rules are put on two sides of the radiographed position of a patient in a parallel way, holes are drilled on the tailored version steel rules, scales are marked on drilling points in sequence, and the drilling points are marking points for the regulating and the splicing of the image; in the second step, subsection images are acquired and transmitted to a computer, and the examined position and the marking points on the steel rules are displayed in the images; in the third step, the subsection images are regulated to obtain regulated sequence images to be spliced; in the fourth step, an image splicing coordinate system is set up, and two adjacent subsection images are spliced respectively according to the order of the image sequence; in the fifth step, two steel rules are selected and put to the three marking points in an overlapping area of each image, and are matched with the triangle between the two images formed by the three marking points; taking one image as a reference image, the splicing between two adjacent subsection images is completed through coordinate transformation. The method is simple, convenient and practical, and has high precision and low cost.

Description

technical field [0001] The invention relates to an image calibration and splicing method in the technical field of medical radiographic images, in particular to a calibration and splicing method for ultra-long specification X-ray radiographic images. Background technique [0002] General-purpose X-ray imaging equipment can only provide X-ray radiation images of limited length (the longest specification is about 43 cm), which cannot meet the clinical diagnostic requirements for ultra-long X-ray radiation images. In order to obtain ultra-long X-ray radiographic images, the method of splicing multiple conventional X-ray images is mainly used at present. [0003] After searching the literature of the prior art, it was found that Qin Minyi et al. published "Research on Digital Orthopedic Whole Spine Imaging Technology" in "Chinese Journal of Radiology" 2004, 38(6), 656-658. This paper introduces the method of using a special weight-bearing full lower extremity imaging device (ut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03G06T7/40G06T7/38
Inventor 顾冬云
Owner SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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