自适应团注追踪CT血管造影术的研究
Study of an adaptive bolus chasing CT angiography.
作者信息
Bai Er-Wei, Bennett James R, McCabe Robert, Sharafuddin Melhem J, Bai Henri, Halloran John, Vannier Michael, Liu Ying, Wang Chenglin, Wang Ge
机构信息
Department of Electrical and Computer Engineering, University of Iowa, Iowa City, IA 52242, USA.
Department of Radiology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.
出版信息
J Xray Sci Technol. 2006;14(1):27-38.
To improve imaging quality and to reduce contrast dose and radiation exposure, an adaptive bolus chasing CT angiography was proposed so that the bolus peak position and the imaging aperture can be synchronized. The performance of the proposed adaptive bolus chasing CT angiography was experimentally evaluated based on the actual bolus dynamics. The experimental results show that the controlled table position and the bolus peak position were highly consistent. The results clearly demonstrate that the proposed adaptive bolus chasing CT angiography that synchronizes the bolus peak position with the imaging aperture by a simple adaptive system is computationally and clinically feasible. Similar techniques may also be applied to conventional angiography to improve imaging quality and to reduce contrast dose and/or radiation exposure.
为了提高成像质量并降低对比剂剂量和辐射暴露，提出了一种自适应团注追踪CT血管造影术，以便使团注峰值位置与成像孔径同步。基于实际团注动力学，对所提出的自适应团注追踪CT血管造影术的性能进行了实验评估。实验结果表明，控制的检查床位置与团注峰值位置高度一致。结果清楚地表明，所提出的通过简单自适应系统使团注峰值位置与成像孔径同步的自适应团注追踪CT血管造影术在计算和临床上是可行的。类似技术也可应用于传统血管造影术，以提高成像质量并降低对比剂剂量和/或辐射暴露。
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