X-ray equipment and alignment method of X-ray equipment

An X-ray equipment, comprising:

• a tube and a detector;
• an LED array fixed relative to a detection center of the detector, the LED array having a predefined geometric center;
• a camera fixed relative to a center of the tube, for photographing the LED array;
• a display connected to the camera, for displaying images photographed by the camera, wherein when the center of the tube is aligned with the detection center of the detector, the geometric center of the LED array is located on a specific pixel unit on the display;
• and
• a SID calculation module connected to the display and configured to calculate a current source image distance based on horizontal pixel offset of a pixel unit on which the geometric center of the LED array is currently located relative to a reference pixel unit preset on the display, a horizontal pixel offset of the first pixel unit relative to the reference pixel unit, and a relation between the lower critical value and the larger critical value of the source image distance, under a specific angle relative to a longitudinal line on the detector,
• wherein the photographing direction of the camera is identical to the irradiating direction of the tube, and when the center of the tube is aligned with the detection center of the detector, viewed from the photographing direction of the camera, the line connecting the geometric center of the LED array and the detection center of the detector is disposed at the specific angle.

An alignment method of X-ray equipment comprising:

• photographing an LED array via a camera wherein the camera is fixed relative to a center of a tube of an X-ray equipment, and the LED array is fixed relative to a detection center of a detector of the X-ray equipment and has a predefined geometric center;
• and
• displaying via a display images photographed by the camera, wherein when the center of the tube is aligned with the detection center of the detector, the geometric center of the LED array is located on a specific pixel unit on the display,
• wherein the specific pixel unit is located between a first pixel unit and a second pixel unit on a line connecting the first pixel unit and the second pixel unit, and the first pixel unit and the second pixel unit are positions of the geometric center of the LED array on the display when the center of the tube is aligned with the detection center of the detector and source image distances are a lower critical value and a larger critical value, respectively.

An alignment method of X-ray equipment comprising:

• photographing an LED array via a camera wherein the camera is fixed relative to a center of a tube of an X-ray equipment, and the LED array is fixed relative to a detection center of a detector of the X-ray equipment and has a predefined geometric center;
• and
• displaying via a display images photographed by the camera, wherein when the center of the tube is aligned with the detection center of the detector, the geometric center of the LED array is located on a specific pixel unit on the display,
• wherein in the photographing step, the photographing direction of the camera is identical to an irradiating direction of the tube, and when the center of the tube is aligned with the detection center of the detector, viewed from the photographing direction of the camera, the line connecting the geometric center of the LED array and the detection center of the detector is disposed at a specific angle relative to a longitudinal line on the detector.