用于定量电脑断层扫描设备之校准的装置;DEVICE FOR THE CALIBRATION OF A QUANTITATIVE COMPUTED TOMOGRAPHY APPARATUS

摘要

一种用于一定量电脑断层扫描设备之校准的装置(10、30、50、70)，其包括一本体(12、32、52、72)；以及数个已知密度元件(13、33、53、73)，其安装至该本体及由彼此具有不同密度且不同于该本体之不同材料所制成。该本体(12、32、52、72)系配置成放置在一个人的头部之嘴巴中或另一部位上，且该等已知密度元件(13、33、53、73)系配置在该人的牙齿区域中。藉由知道对应于该等已知密度元件(13、33、53、73)所处之位置的断层扫描影像之某些位置的确切密度，该装置使一定量电脑断层扫描设备能调整它的计算，以便将断层扫描影像之放射线密度单位转换至骨质密度单位。; 30; 50; 70) for calibration of a quantitative computed tomography apparatus, which includes a body (12; 32; 52; 72) and several known-density elements (13; 33; 53; 73) attached to the body and made of different materials and in different densities from each other and different from the body. The body (12; 32; 52; 72) is configured to be placed in the mouth or on another part of a person's head, with the known-density elements (13; 33; 53; 73) arranged in the region of the person’s teeth. The device enables a quantitative computed tomography apparatus to adjust its calculations so as to convert the radiodensity units of the tomographic image into bone mineral density units, by knowing the exact densities of certain points of the image, corresponding to the points where the known-density elements (13; 33; 53; 73) are located.