Movable c-arm X-ray unit for recording X-ray images of patient in clinic, has measuring instruments in active connection with c-arm, X-ray source and X-ray detector such that accelerations of arm, source and detector are measurable

摘要

#CMT# #/CMT# The unit has a set of measuring instruments (8, 9) arranged at and in active connection with a c-arm (1) such that acceleration of the c-arm is measurable. The measuring instruments are arranged at and in active connection with an X-ray source (4) and an X-ray detector (5), respectively such that acceleration of the X-ray source and acceleration of the X-ray detector are measurable. The measuring instruments comprise three acceleration sensors to measure the acceleration of the X-ray source and the X-ray detector in three orthogonal directions. #CMT# : #/CMT# An independent claim is also included for a method for capturing an image with a movable c-arm X-ray unit. #CMT#USE : #/CMT# Movable c-arm X-ray unit for recording X-ray images of a patient in a clinic. #CMT#ADVANTAGE : #/CMT# The oscillation behavior of the c-arm is assigned based on the determined acceleration values, so that a point of time for releasing the radiation feed to capture an image can be determined with high accuracy, image quality can be improved, and unnecessary radiation dose for the patients can be avoided. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a side view of a movable c-arm X-ray unit with two acceleration sensors. 1 : C-arm 3 : Driving frame 4 : X-ray source 5 : X-ray detector 8, 9 : Measuring instruments.