Demonstration of dose and scatter reductions for interior computed tomography.
Demonstration of dose and scatter reductions for interior computed tomography.
复制标题
内部计算机断层扫描的剂量和散射减少演示。
DOI：
10.1097/rct.0b013e31819f61e2
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发表时间：
2009
影响因子：
1.3
通讯作者：
Wang,Ge
中科院分区：
文献类型：
--
作者：
Bharkhada,Deepak;Yu,Hengyong;Dixon,Robert;Wei,Yuchuan;Carr,JJeffrey;Bourland,JDaniel;Best,Ryan;Hogan,Richard;Wang,Ge
随着计算机断层扫描 (CT) 技术的不断发展以及 CT 成像使用的不断增加，CT 产生的电离辐射剂量正成为公众关注的主要问题，特别是对于心脏成像等高剂量应用。我们最近提出了一种新颖的内部断层扫描方法来减少 X 射线剂量，该方法与之前提出的所有方法都有很大不同。我们的方法仅使用穿过所需感兴趣区域的光线的投影数据。这种方法不仅减少了 X 射线剂量，还减少了散射。在本文中，我们量化了使用这种方法可以实现的 X 射线剂量和散射辐射量的减少。结果表明，随着 FOV 从 50 cm 减小到 8.6 cm，内部断层扫描可将 X 射线剂量减少 18% 至 58%，并将散射到探测器的 X 射线剂量减少 19% 至 59%。
With continuing developments in computed tomography (CT) technology and its increasing use of CT imaging, the ionizing radiation dose from CT is becoming a major public concern particularly for high-dose applications such as cardiac imaging. We recently proposed a novel interior tomography approach for x-ray dose reduction that is very different from all the previously proposed methods. Our method only uses the projection data for the rays passing through the desired region of interest. This method not only reduces x-ray dose but scatter as well. In this paper, we quantify the reduction in the amount of x-ray dose and scattered radiation that could be achieved using this method. Results indicate that interior tomography may reduce the x-ray dose by 18% to 58% and scatter to the detectors by 19% to 59% as the FOV is reduced from 50 to 8.6 cm.