双能CT区分两种造影剂的研究
发布时间：2018-07-26 07:53
【摘要】：目的探讨双能CT扫描区分铋造影剂和钆造影剂的可行性。资料与方法将两组不同比例的铋造影剂和钆造影剂混合物置于试管内,第一组为碘海醇注射液和钆特酸葡胺注射液,体积比分别为0∶1、1∶6、1∶1、6∶1、1∶0;第二组为碘海醇注射液和果胶胶体铋溶液,质量浓度分别为0∶1、1∶6、1∶1、6∶1、1∶0。使用双能CT扫描后,以80 keV进行单能量图像重建,应用Liver VNC软件将双能数据进行虚拟平扫及碘含量分析。结果在80 keV虚拟单能量成像的条件下,第一组混合液的CT值为379~383 HU,第二组混合液的CT值为170~173 HU,且两组实际碘浓度与测量碘浓度之间差异均无统计学意义(P0.05)。物质分离图像中,碘造影剂和钆造影剂区分不明显,碘和铋造影剂区分明显。结论双能CT可以区分铋和钆这两种衰减率不同的造影剂,原子序数相差越大,区分效果越明显。
[Abstract]:Objective to study the feasibility of bismuth contrast agent and gadolinium contrast agent in dual-energy CT scanning. Materials and methods two groups of bismuth contrast agent and gadolinium contrast agent mixture were put into test tube. The volume ratio was 0: 1: 1: 61: 1: 1: 1: 0; the second group consisted of iodiol injection and colloidal bismuth pectin solution with the mass concentrations of 0: 1: 61: 61: 61: 1: 0. After double energy CT scanning, the single energy image was reconstructed with 80 keV, and the virtual plain scan and iodine content were analyzed by Liver VNC software. Results under the condition of 80 keV virtual single energy imaging, the CT value of the first mixture was 379 HUU and that of the second group was 170 ~ 173HU. there was no significant difference between the actual iodine concentration and the measured iodine concentration in the two groups (P0.05). The difference between iodine contrast agent and gadolinium contrast agent was not obvious, and iodine and bismuth contrast agent were not distinct. Conclusion Dual-energy CT can distinguish bismuth and gadolinium from two contrast agents with different attenuation rate.
【作者单位】： 河北医科大学第四医院CT室;河北医科大学第一医院放射科;
【分类号】：R814.42
[Abstract]:Objective to study the feasibility of bismuth contrast agent and gadolinium contrast agent in dual-energy CT scanning. Materials and methods two groups of bismuth contrast agent and gadolinium contrast agent mixture were put into test tube. The volume ratio was 0: 1: 1: 61: 1: 1: 1: 0; the second group consisted of iodiol injection and colloidal bismuth pectin solution with the mass concentrations of 0: 1: 61: 61: 61: 1: 0. After double energy CT scanning, the single energy image was reconstructed with 80 keV, and the virtual plain scan and iodine content were analyzed by Liver VNC software. Results under the condition of 80 keV virtual single energy imaging, the CT value of the first mixture was 379 HUU and that of the second group was 170 ~ 173HU. there was no significant difference between the actual iodine concentration and the measured iodine concentration in the two groups (P0.05). The difference between iodine contrast agent and gadolinium contrast agent was not obvious, and iodine and bismuth contrast agent were not distinct. Conclusion Dual-energy CT can distinguish bismuth and gadolinium from two contrast agents with different attenuation rate.
【作者单位】： 河北医科大学第四医院CT室;河北医科大学第一医院放射科;
【分类号】：R814.42
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1 莫泳康;黄锦|，
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