Multienergy Photon-counting K-edge Imaging: Potential for Improved Luminal Depiction in Vascular Imaging
Multienergy Photon-counting K-edge Imaging: Potential for Improved Luminal Depiction in Vascular Imaging
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DOI：
10.1148/radiol.2492080560
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发表时间：
2008-12-01
期刊：
影响因子：
19.7
通讯作者：
Schlomka, Jens-Peter
中科院分区：
文献类型：
--
作者：
Feuerlein, Sebastian;Roessl, Ewald;Schlomka, Jens-Peter
本研究的目的是研究光谱计算机断层扫描（CT）是否有可能通过使用钆的特征性k边缘区分血管内钆基造影剂、钙化斑块和支架材料来改善管腔描绘。使用具有光子计数探测器和六个能量阈值水平的临床前光谱CT扫描仪扫描体模血管。部分闭塞的支架模拟使用钙化斑块isoattenuated周围的钆螯合物溶液。重建图像显示钆的有效隔离，随后清晰描绘灌注血管腔。钙化斑块和支架材料被抑制。(c)RSNA，2008年
The purpose of this study was to investigate whether spectral computed tomography (CT) has the potential to improve luminal depiction by differentiating among intravascular gadolinium-based contrast agent, calcified plaque, and stent material by using the characteristic k edge of gadolinium. A preclinical spectral CT scanner with a photon-counting detector and six energy threshold levels was used to scan a phantom vessel. A partially occluded stent was simulated by using a calcified plaque isoattenuated to a surrounding gadolinium chelate solution. The reconstructed images showed an effective isolation of the gadolinium with subsequent clear depiction of the perfused vessel lumen. The calcified plaque and the stent material are suppressed. (c) RSNA, 2008