초록 ▼

A digital X-ray image processing apparatus for exposing an X-ray transmitted through an object onto a photostimulable phosphor plate, for scanning the photostimulable phosphor plate by using an excitation beam to obtain an X-ray image, and for reading the X-ray image. The digital X-ray image process

A digital X-ray image processing apparatus for exposing an X-ray transmitted through an object onto a photostimulable phosphor plate, for scanning the photostimulable phosphor plate by using an excitation beam to obtain an X-ray image, and for reading the X-ray image. The digital X-ray image processing apparatus includes an image storage unit for storing the X-ray image used for an actual read when diagnosing the object and a histogram storage unit for storing a standard histogram of the X-ray image. The standard histogram is formed by an intensity and frequency of the X-ray. Also provided is a first monitor unit for displaying the standard histogram read out from the histogram storage unit and a read conditions determination unit for determining actual read conditions of the X-ray image based on a latitude of the intensity of the X-ray in the standard histogram.

대표청구항 ▼

A digital X-ray image processing apparatus for exposing an X-ray transmitted through an object onto a photostimulable phosphor plate, for scanning the photostimulable phosphor plate by means of an excitation beam to obtain an X-ray image, and for reading the X-ray image, the digital X-ray image proc

A digital X-ray image processing apparatus for exposing an X-ray transmitted through an object onto a photostimulable phosphor plate, for scanning the photostimulable phosphor plate by means of an excitation beam to obtain an X-ray image, and for reading the X-ray image, the digital X-ray image processing apparatus comprising; image storing means for storing the X-ray image used for an actual read when diagnosing the object; histogram storage means for storing a standard histogram of the X-ray image, a standard histogram being formed by data of the photographic conditions from the X-ray including voltage, current, exposure time and distance of an X-ray tube, conditions of the photographic member including bond, skin, lungs and breasts, and conditions of the object to be X-rayed including the thinness or thickness of the object; first monitor means for displaying the standard histogram read out from said histogram storage means; read conditions determination means for determining actual read conditions of the X-ray image based on a latitude of the intensity of the X-ray in the standard histogram stored in said histogram storage means, without a pre-scanning operation; switching means for switching between a pre-scan operation and the actual read operation; a histogram calculation unit, operatively connected to said switching means, for calculating a pre-scan histogram based on a pre-scan data obtained prior to the actual read in the pre-scan operation, the pre-scan histogram being input to said first monitor means and used instead of the standard histogram; a correlation analysis unit, operatively connected to said histogram storage means and said histogram calculation unit, for receiving the pre-scan and standard histograms, and calculating a correlation value to move the standard histogram in the direction of the intensity of the X-ray to obtain a maximum correlation value between the histograms; and a histogram correction unit, operatively connected to said correlation analysis unit, for calculating a difference between the standard histogram and the pre-scan histogram, and correcting the latitude of the intensity of the X-ray used for the actual read operation.