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四、X线图象处理 X线图象可以说是当前临床应用最广泛的一种医学图象。如何从X线图象获得更多的信息,是提高诊断水平的一个重要方向。 X线图象建立在当X线透过人体时,各种脏器与组织对X线的不同吸收程度的基础上,因而在接收端将得到不同的射线强度。接收端射线强度的变化,如被记录在底片上,就变成灰度的变化;如通过影象增强管,则就变成了辉度的变化。
Fourth, X-ray image processing X-ray image can be said that the current most widely used clinical image of a medical. How to get more information from X-ray images is an important direction to improve the diagnostic level. The X-ray image is based on the different degrees of X-ray absorption by the various organs and tissues when the X-ray is transmitted through the human body, so that different X-ray intensities are obtained at the receiving end. The change of the radiation intensity at the receiving end, if it is recorded on the film, becomes a change of the gray level; as the image intensifies the tube, it becomes the change of the luminance.