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Registration method and apparatus

A registration and offset vector technology, applied in the field of medical image processing, can solve the problems of inaccurate positioning and positioning of radiotherapy, slow registration of medical images, etc., and achieve the effect of accurate positioning and registration.

Inactive Publication Date: 2017-02-15
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

[0007] The problem to be solved by the present invention is to provide a registration method and device based on two-dimensional medical images and three-dimensional medical images, so as to solve the problem of slow registration of medical images, especially the problem of inaccurate radiotherapy positioning and positioning

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  • Registration method and apparatus
  • Registration method and apparatus

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Embodiment Construction

[0026] In order to make the above-mentioned objectives, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, specific details are set forth in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] figure 1 Is the schematic diagram of the radiotherapy equipment, such as figure 1 As shown, the radiotherapy apparatus 100 includes a rotating part 102. The rotating part 102 is mounted on the fixed part 101, and the rotating part 102 can rotate in the r direction with the z direc...

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Abstract

The invention discloses a registration method and apparatus. The registration method comprises steps of carrying out registration of a digital reconstruction ray image and a two-dimension medical image acquired at the same angle, and calculating a two-dimension image offset vector; determining the selection range of a three-dimension image offset vector according to the two-dimension image offset vector; determining a final three-dimension image offset vector based on image mutual information between the digital reconstruction ray image and the two-dimension medical image in the range; and taking the three-dimension image offset vector as an offset vector for registration of the two-dimension medical image and a three-dimension medical image. The technical scheme can rapidly and conveniently carry out registration of the two-dimension medical image and the three-dimension medical image, and is particularly accurate in positioning registration of a verification patient.

Description

Technical field [0001] The invention relates to the field of medical image processing, in particular to the registration of medical images. Background technique [0002] Before radiotherapy or image-guided surgery is carried out, medical imaging equipment (for example, computer tomography equipment) usually performs medical imaging of the patient, and performs treatment planning based on the collected three-dimensional images of the patient (also called volume data). When formulating a radiation treatment plan, the patient’s computer tomography image is imported into the radiation treatment planning system (TPS, Therapy Planning System), and the angle, radiation dose, field range, etc. of the radiation treatment are determined based on the patient’s image. In the actual radiotherapy, the patient will take medical images while lying in the radiotherapy equipment. The medical images taken at this time will be registered with the images from the previous radiology plan to perform po...

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Application Information

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IPC IPC(8): G06T3/00G06T5/00
CPCG06T5/00G06T2207/30004G06T3/14
Inventor 黎维娟马杰延
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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