摘要:
A measuring apparatus employing hard X-rays comprises a pair of sensors receiving substantially simultaneously hard X-ray beam emitted from an X-ray source, one of which sensors receives the beam directly from the source and not passed through an object to be measured while the other sensor receives the beam passed through the object. The other sensor comprises an X-ray image receiving camera providing an X-ray image of the object and a spot X-ray sensor for receiving the beam passed through a restricted measuring zone or spot in the object, and the camera and spot sensor are shiftable alternately to a position of receiving the beam passed through the object, whereby, aftervisual observation of the X-ray image for discrimination, the restricted zone or spot can be determined for a higher precision measuring, and a precise quantitative measurement can be carried out by the spot sensor with respect to the restricted zone or spot.
摘要:
An X-ray image pick-up method causes X-rays from an X-ray source to be irradiated on an object for picking up its image as passed through a filter capable of restricting any fluctuation in effective X-ray energy within ±10%, and then the X-rays thus penetrated through the object to be picked up by an image pick-up means. Radiation dose with respect to patients as the object and eventually to doctors or X-ray operators is thereby minimized, while the image pick-up can be realized with a high resolution.
摘要:
A measuring apparatus employing hard X-rays comprises a pair of sensors receiving substantially simultaneously hard X-ray beam emitted from an X-ray source, one of which sensors receives the beam directly from the source and not passed through an object to be measured while the other sensor receives the beam passed through the object. The other sensor comprises an X-ray image receiving camera providing an X-ray image of the object and a spot X-ray sensor for receiving the beam passed through a restricted measuring zone or spot in the object, and the camera and spot sensor are shiftable alternately to a position of receiving the beam passed through the object, whereby, aftervisual observation of the X-ray image for discrimination, the restricted zone or spot can be determined for a higher precision measuring, and a precise quantitative measurement can be carried out by the spot sensor with respect to the restricted zone or spot.