多层螺旋CT冠状动脉造影的图像评估

Image assessment with multislice CT coronary angiography.

作者信息

Cademartiri Filippo, Marano Riccardo, Luccichenti Giacomo, Mollet Nico, Runza Giuseppe, Galia Massimo, Belgrano Manuel, Gualerzi Massimo, Brambilla Lorenzo, Coruzzi Paolo, Midiri Massimo

机构信息

Dipartimento di Radiologia, Erasmus Medical Center, Rotterdam, The Netherlands.

出版信息

Radiol Med. 2005 Mar;109(3):198-207.

PMID:15775888

Abstract

AIM

To investigate the diagnostic accuracy of two different protocols for image evaluation used in multislice computed tomography coronary angiography (MSCT-CA).

MATERIALS AND METHODS

Sixty patients with suspected coronary artery disease undergoing conventional coronary angiography (CA) were enrolled for MSCT-CA. All patients underwent 16-row MSCT (Sensation 16, Siemens, Germany) with the following parameters: detector rows 16, collimation 0.75 mm, gantry rotation time 375 ms. Two independent observers assessed the images for significant stenosis using a a protocol with standard projections and a three-dimensional protocol. The diagnostic accuracy for both methods was calculated using quantitative CA as a reference standard.

RESULTS

The sensitivity, specificity, negative predictive value and positive predictive value obtained with the conventional projection protocol and with three-dimensional protocol were: 54% and 93%, 97% and 97%, 76% and 86%, 92% and 99%, respectively.

CONCLUSIONS

Conventional projections in the assessment of MSCT-CA provide insufficient diagnostic accuracy compared with three-dimensional processing.

摘要

目的

探讨多层螺旋计算机断层扫描冠状动脉造影（MSCT-CA）中用于图像评估的两种不同方案的诊断准确性。

材料与方法

60例疑似冠心病患者接受了传统冠状动脉造影（CA）检查，并进行了MSCT-CA检查。所有患者均采用16排MSCT（德国西门子公司的Sensation 16）进行扫描，参数如下：探测器排数16排，准直0.75mm，机架旋转时间375ms。两名独立观察者分别使用标准投影方案和三维方案对图像进行显著狭窄评估。以定量CA作为参考标准，计算两种方法的诊断准确性。