일반촬영 테이블 재질 특성에 관한 연구

Abstract

This study is intended to determine suitability of acryl, which has been the table material ofgeneral shooting, in line with its purpose or other available material securing better suitability than acrylamong several other materials available in actual uses. Possible materials for the table used in generalshooting, including acryl as the existing material, wood, plastic, glass, and pulps were compared bymeasuring transmittance and scattered dose by a dosimeter. Every material was prepared to have anidentical thickness of 1 cm, and measurement for transmittance was conducted with fixed amperage at 100mA while changing the voltage to 40 kVp, 60 kVp, 80 kVp, 100 kVp, and 120 kVp while measuringscattered dose for the side-scatter ray under the identical conditions excepting FFD. FFD was keptchanging for the measurement. The transmittance of wood was highest when FFD was 100 cm, followedby those of acryl, pulps, plastic, and glass, and the results were identical at FFD 180 cm. As results ofside-scatter ray measurements, acryl showed the highest value at FFD 30 cm, followed by wood, pulp,glass, and plastic. When considering the overall results, wood was the best material for transmittancewhile acryl was the best for the side-scatter ray. Though confirming the suitability of wood as the tablematerial in consideration of transmittance and side-scatter ray was somewhat obstructive, this study couldobserve less level of side-scatter ray in wood than that of acryl. If only the side-scatter ray isconsidered, wood is the better candidate for the table material, but the properties of wood seemed to besubject for instability by serious environmental factors than others. As shown in the above, a woodentable may result in less exposure of patients to scattered ray than that of acryl, but it has a risk ofdegradation and consecutive infection so that the acryl is assumed to be the most suitable material forthe table for general shooting in a comprehensive view among other materials.