Multislice CT coronary angiography: Evaluation of an automatic vessel detection tool
Multislice CT coronary angiography: Evaluation of an automatic vessel detection tool
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DOI：
10.1055/s-2004-812991
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发表时间：
2004-04-01
影响因子：
1.8
通讯作者：
Rogalla, P
中科院分区：
文献类型：
--
作者：
Dewey, M;Schnapauff, D;Rogalla, P
目的：探讨一种新的多层螺旋CT（MSCT）冠状动脉造影检测工具的潜力，该工具可自动显示曲面多平面重建和正交横截面。材料与方法：35例患者连续入组前瞻性意向诊断研究，并使用MSCT扫描仪（16 x 0.5 mm探测器准直和400 ms机架旋转时间）（Aquarium，Toshiba）进行检查。ECG门控重建应用了最多使用四个分段的多分段算法。使用工作站（Vitrea 2，版本3.3，Vital Images）的冠状动脉CT方案进行冠状动脉的自动和手动检测，以检测直径大于或等于1.5 mm的所有节段中的显著狭窄（大于或等于50%）。每种检测工具由一名读片者使用，该读片者对其他检测方法的结果和常规冠状动脉造影的结果不知情。结果如下：自动和手动方法的总体灵敏度、特异性、非诊断率和准确性分别为90 vs. 94%、89 vs. 84%、6 vs. 6%和89 vs. 88%（p = n. s.）。自动和手动入路检测到的左主干/左前降支血管长度高度相关（143 +/- 30 vs. 146 +/-24 mm，r=0.923，p
Purpose: To investigate the potential of a new detection tool for multislice CT (MSCT) coronary angiography with automatic display of curved multiplanar reformations and orthogonal cross-sections. Materials and Methods: Thirty-five patients were consecutively enrolled in a prospective intention-to-diagnose study and examined using a MSCT scanner with 16 x 0.5 mm detector collimation and 400 ms gantry rotation time (Aquilion, Toshiba). A multisegment algorithm using up to four segments was applied for ECG-gated reconstruction. Automatic and manual detection of coronary arteries was conducted using the coronary artery CT protocol of a workstation (Vitrea 2, Version 3.3, Vital Images) to detect significant stenoses (greater than or equal to 50 %) in all segments of greater than or equal to 1.5 mm in diameter. Each detection tool was used by one reader who was blinded to the results of the other detection method and the results of conventional coronary angiography. Results: The overall sensitivity, specificity, nondiagnostic rate, and accuracy of the automatic and manual approach were 90 vs. 94%, 89 vs. 84%, 6 vs. 6%, and 89 vs. 88 %, respectively (p = n. s.). The vessel length detected with the automatic and manual approach were highly correlated for the left main/left anterior descending (143 +/- 30 vs. 146 +/- 24mm, r=0.923, p