Abstract: The invention relates to an X-ray apparatus having a C-arm assembly (1) on which an X-ray source (4) and an X-ray detector (5) are arranged opposite one another, the C-arm assembly (1) being arranged to be rotatable about a propeller axis (9) and an axis of rotation (11). To enable calibration to take place even on-line during the acquisition of projected data, respective marker arrangements (14, 15) are mounted on the X-ray source (4) and the X-ray detector (5), and a camera arrangement (12) for detecting the marker arrangements (14, 15) is arranged on the C-arm assembly (1) to allow the positions of the X-ray source (4) and the X-ray detector (5) to be determined. With this arrangement, the problem of the blocking of lines of sight between the marker arrangements (14, 15) and the camera arrangement (12) is reduced or completely avoided.

Abstract: A C-arm X-ray system is disclosed which includes an X-ray source, an X-ray detector and a support C-arm mechanism including an outer and inner C-arm. The X-ray source and the X-ray detector are oppositely disposed on the inner C-arm. The inner C-arm is suspended upon at least one wheel construction disposed in the support C-arm. The inner C-arm may be automatically driven annularly outside of a first end of the C-arm support and into a second end of the C-arm support to close a gap normally found in conventional C-arm X-ray devices. Such construction allows the X-ray source and X-ray detector to rotate at least one full 360 degree cycle, providing an C-arm X-ray device capable of performing both fluoroscopic and CT procedures without a need to move a patient under examination (i.e., monitoring the patient in a common frame of reference for both applications).

Abstract: A C-arm X-ray system is disclosed which includes an X-ray source, an X-ray detector and a support C-arm mechanism including an outer and inner C-arm. The X-ray source and the X-ray detector are oppositely disposed on the inner C-arm. The inner C-arm is suspended upon at least one wheel construction disposed in the support C-arm. The inner C-arm may be automatically driven annularly outside of a first end of the C-arm support and into a second end of the C-arm support to close a gap normally found in conventional C-arm X-ray devices. Such construction allows the X-ray source and X-ray detector to rotate at least one full 360 degree cycle, providing an C-arm X-ray device capable of performing both fluoroscopic and CT procedures without a need to move a patient under examination (i.e., monitoring the patient in a common frame of reference for both applications).