Window setting method and device for image diagnosis system

Abstract

The invention provides a window setting method and device for an image diagnosis system. A window setting device determines a target object source point and a background source point in the image; aninterested target object region and a corresponding background region are respectively determined according to the target object source point and the background source point; according to the pixel gray scale mean value of the target object area and the pixel gray scale mean value of the background area, and based on the corresponding relation between the human vision contrast resolution and the background brightness, the corresponding target object expected display gray scale and the background expected display gray scale are determined; and a target window width and a target window positionset by a display window are determined according to the pixel gray average value of the target object area, the pixel gray average value of the background area, the expected display gray of the targetobject and the expected display gray of the background. The window setting is based on human visual characteristics, so that the image contrast most suitable for naked eye observation is provided fora user.

Description

technical field [0001] The invention relates to the field of image diagnosis, in particular to window setting for an image diagnosis system. Background technique [0002] In the current field of medical image diagnosis, the observer's subjective reading and evaluation of images is still a key means and an important basis for diagnosis. The observer's visual impression of the image directly affects the quality of diagnosis, and the window settings used to display the image directly determine the visibility of the observed object. [0003] For different clinical purposes and applications, CT systems of all equipment manufacturers provide specific preset window settings. However, these are not enough. Sometimes, even for the same clinical application, these preset window settings cannot provide a consistent visual impression between different image diagnostic equipment or between different scanning conditions of the same equipment. In addition, in many cases, observers will ...

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Problems solved by technology

In addition, in many cases, observers will manually adjust the window settings according to the specific area they really care about, and this personal subjective operation based on experience and preference will not only prolong the diagnosis time, but will also vary between different observers, and even It is the deviation of display and visual impression between different observation times of the same observer

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