WANG Qiang,ВАН Цян,MA Jing,МА Цзин,YANG Zhongrong,ЯН Чжунжун
申请号：
RU2016110461
公开号：
RU0002629059C1
申请日:
2016.03.22
申请国别(地区):
RU
年份:
2017
代理人:
摘要：
FIELD: physics.SUBSTANCE: method that includes collecting the background data without X-ray emission, collecting the air medium data, when X-rays are emitted and without a scanned object in the investigated channel, scanning the object to collect the original scan data, and pre-processing the original scan data based on the background data and the air medium data in order to obtain the scanned image data, wherein the step of preliminary processing the original scan data based on the background data and the air medium data, to obtain the scanned image data further includes segmenting the area occupied by the object in the scan area, inside which the object is located, and the area occupied by the air medium without the object based on the original scan data, and searching the air medium data for the specific air medium data closest to the value of the original scan data for the area occupied by the air medium, and implementing the gain correction for the original scan data based on the background data and the closest air medium data, to obtain the scanned image data. The system comprises an X-ray generator adapted to emit X-rays, a detector that remains stationary relative to the X-ray generator and is adapted to collect X-ray detector signals, and a processor associated with the detector and adapted to process the X-ray detector signals collected by the detector. This processing involves the use of the detector signals collected by the detector when the X-ray generator does not emit X-rays, as the background data, the use of the detector signals when the X-ray generator emits X-rays and the scanned object is absent in the test channel, as the air data, the use of the detector signals collected by the detector, when the X-ray generator emits X-rays to scan the object, as the original scan data, and pre-processing of the original scan data based on the background data and the air medium data so as to obtain the scanned image data.EFFECT: reducing the noise effect caus
