Patent ID: 6480570
Filing Date: 2002-11-12
Classification: A61B

Abstract:
An X-ray image display apparatus comprising:X-ray image detecting means for transmitting an X-ray through a subject and detecting an X-ray image of the subject; video signal processing means for converting the X-ray image detected by the X-ray image detecting means to a video signal and performing image processing on the video signal to generate X-ray image data; an input device for specifying an entire display area to be displayed in the X-ray image detected by the X-ray image detecting means; a display circuit for extracting display image data corresponding to the entire display area specified by the input device based on the X-ray image data generated by the video signal processing means; a display device for converting the display image data extracted by the display circuit to a video signal and displaying the video signal as an image corresponding to the entire display area specified by the input device; a collimator, having an X-ray transmitting aperture, for interrupting an X-ray except within the X-ray transmitting aperture of the collimator; collimator drive means for driving the collimator; display area detecting means for generating display area data representing the entire display area specified by the input device based on the X-ray image data and the display image data; and a controller for outputting a control signal to the collimator drive means to control a position of the collimator and a size of the X-ray transmitting aperture of the collimator based on the display area data generated by the display area detecting means such that the collimator interrupts the X-ray from being transmitted through any portion of the subject substantially other than a portion of the subject corresponding to the entire display area specified by the input device.