Automatic heart locating method based on chest locating film

A technology for automatic positioning and positioning slices, which is applied in image data processing, instruments, calculations, etc., can solve problems such as wasting time, this technology research is blank, and has not been found, so as to reduce CT radiation dose, save manual operations, and improve The effect of work efficiency

Inactive Publication Date: 2013-11-20
NORTHEASTERN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] At present, the location of the heart in the CT positioning film is realized manually by the technician, which takes a certain amount of time for the entire scanning process; in addition, the current CT is a full-field scan, which makes the area around the heart also exposed to a large amount of radiation. , in order to reduce the CT radiation dose received by patient

Method used

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  • Automatic heart locating method based on chest locating film
  • Automatic heart locating method based on chest locating film
  • Automatic heart locating method based on chest locating film

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Embodiment Construction

[0037] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0038] A method for automatic heart positioning based on chest positioning films, the method flow chart is as follows figure 1 shown, including the following steps:

[0039] Step 1, performing background removal processing on the front view image of the chest;

[0040] Such as figure 2 As shown, due to the large black background of the CT positioning film, the distribution of the high gray level part in the gray level distribution is not obvious, and it is difficult to find a reasonable threshold value. The threshold value calculated directly by the maximum between-class variance method is too small. figure 1 The threshold value of is 0.3255, and the result of binarization under this threshold is as follows image 3 As shown, the heart part is difficult to distinguish, and the result is not ideal. So first remove the black background of the image....

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Abstract

The invention relates to an automatic heart locating method based on a chest locating film, belonging to the field of CT (computed tomography) image intelligent aid application. The automatic heart locating method can be used for automatically locating a heart area of a chest CT locating film, so that the manual operation can be omitted, and the working efficiency can be improved; three-dimensional location is automatically carried out for the heart, so that the location of the heart in a local low-dose scanning image can be realized, the radiating area of the local X-ray can be determined, the preparation can be made for the local fine scanning, and the purpose of reducing the CT radiation dose can be realized.

Description

technical field [0001] The invention belongs to the field of intelligent assistant application of CT images, and in particular relates to an automatic heart positioning method based on a chest positioning film. Background technique [0002] At present, the location of the heart in the CT positioning film is realized manually by the technician, which takes a certain amount of time for the entire scanning process; in addition, the current CT is a full-field scan, which makes the area around the heart also exposed to a large amount of radiation. , in order to reduce the CT radiation dose received by patients, we propose a local low-dose scan of the heart. If the local scan of the heart is to be realized, it is more necessary to automatically perform three-dimensional positioning of the heart to determine the radiation area of ​​the local X-ray. At present, no discussion on this technical problem has been found in the published literature, and the research on this technology is ...

Claims

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Application Information

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IPC IPC(8): G06T7/40G06T5/00A61B6/03
Inventor 李宏刘凯华王旭康雁孙航孝大宇金时开
Owner NORTHEASTERN UNIV
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