Reduction of Exposure by Use of Heavy Elements as Filters in Diagnostic Radiology

진단방사선 영역에서의 중원소 여과판 사용에 의한 피폭선량 감소

This work characterized in terms of the reduction of exposure dose by use of the heavy elements filter in the diagnostic radiology. They contained heavy elements filter of Ho and X-ray beam harding filters such as Al and Cu. From the results of experimental evaluation, it was founded that in the case of the Ho filter, X-ray property was not changed with variety of kVp. The surface dose and absorption dose was increased in order of Cu, He and Al. The contrast of image showed the higher value in order of Cu, Al and Ho.