A method and system for acquiring and stitching DR images
An image acquisition and image technology, which is applied in the field of medical image processing, can solve problems such as inappropriateness and incompatibility, and achieve reliable operation and good effect of splicing images
Active Publication Date: 2017-07-28
深圳蓝影医学科技股份有限公司
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This projection method is not suitable for manual methods because it needs to accurately estimate the projection angle of the X-ray tube
And the resulting image will have a small trapezoidal distortion, so it was not widely used in the past
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[0034] The present invention proposes a DR-based image acquisition and stitching method and system, which only requires the doctor to simply select the shooting range of the patient, and the system will automatically complete the process of multiple exposure stitching and drawing in a short time. This process does not require human intervention, the system operates reliably and the image stitching effect is good.
[0035] The center position of the flat panel detector PlanePos at each exposure N And the angle tubeAngle of the bullhead device corresponding to the center of the detector's plate when each image is exposed N The subscript N in is a natural number greater than 0, and the center position of the flat panel detector when the image is obtained by one exposure PlanePos N and the angle tubeAngle of the bullhead device N The subscripts N are the same, and the subscripts N of the parameters obtained by different exposures are different from each other, and the value rang...
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The invention discloses a DR image acquiring and splicing method and a DR image acquiring and splicing system. The method comprises the following steps of: determining upper and lower limits of interested regions; calculating shooting parameters, including the plane distance SID from a focal point of an X photosphere tube to a detector, the needed exposure frequency Exposure Num, the superposition ratio Over Rate between two successive exposure images, the flat panel detector center position Plane Pos N in each exposure and the corresponding ox-head angle tube Angle N of the detector flat panel center during each image exposure; exposing the main control panel of the DR equipment according to the shooting parameters, receiving X rays by the detector and imaging, transmitting each-time exposure images to a PC (Personal Computer) machine and splicing the exposure images by the PC machine. According to the method and the system, there is no human interference in an exposure imaging and image splicing process, and the system is reliable in operation and the spliced images are excellent in effect.
Description
technical field [0001] The present invention relates to medical image processing technology, in particular to a DR image acquisition and splicing method and system. Background technique [0002] In the medical field, an X-ray film machine, such as a suspension DR (Digital Radiography), is usually used to image a patient's region of interest, and then the doctor diagnoses and treats the patient based on the obtained patient image. For the resulting image size, it is generally equal to the size of the DR detector. If the ROI is within the size of a detector, the entire ROI can be fully represented in one image. However, for some diseases, it is necessary to observe the whole area, such as the whole spine and the whole lower limbs. At this time, the size of one image is not enough to present the entire region of interest, which requires multiple exposure shots, and then several sub-images are stitched together to present the entire region of interest. However, most of the cu...
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IPC IPC(8): A61B6/00
Inventor 赵明王东平吴伟樊自力杨科灵杜如坤熊道云
Owner 深圳蓝影医学科技股份有限公司