颅内动脉瘤：通过最大密度投影和源图像评估的磁共振血管造影的诊断准确性
Intracranial aneurysms: diagnostic accuracy of MR angiography with evaluation of maximum intensity projection and source images.
作者信息
Korogi Y, Takahashi M, Mabuchi N, Nakagawa T, Fujiwara S, Horikawa Y, Miki H, O'Uchi T, Shiga H, Shiokawa Y, Watabe T, Furuse M
机构信息
Department of Radiology, Kumamoto University School of Medicine, Japan.
出版信息
Radiology. 1996 Apr;199(1):199-207. doi: 10.1148/radiology.199.1.8633146.
PURPOSE
To determine whether evaluation of source images from magnetic resonance (MR) angiography in addition to maximum-intensity projection (MIP) images improves the detection of aneurysms.
MATERIALS AND METHODS
Conventional and MR angiography were performed in 193 patients with various intracranial vascular lesions or normal findings. Images were evaluated in a blinded manner. Two readings were performed 6 weeks apart by evaluating MIP images with and without source images. Results were evaluated with receiver operating characteristic analysis.
RESULTS
Sensitivity for the detection of aneurysms increased slightly when source images were included. The detection rate of internal carotid artery aneurysms was most improved with the addition of source images. No statistically significant differences in performance were found between the readings with MIP images alone and with source images.
CONCLUSION
Sensitivity may improve with combined reading of nonselective MIP and source images.
目的
确定除最大强度投影（MIP）图像外，评估磁共振（MR）血管造影的源图像是否能提高动脉瘤的检测率。
材料与方法
对193例有各种颅内血管病变或正常结果的患者进行了传统血管造影和MR血管造影。以盲法评估图像。通过评估有无源图像的MIP图像，间隔6周进行两次阅片。采用受试者操作特征分析对结果进行评估。
结果
纳入源图像时，动脉瘤检测的敏感性略有提高。添加源图像后，颈内动脉动脉瘤的检测率改善最为明显。单独使用MIP图像阅片和使用源图像阅片之间在性能上未发现统计学显著差异。
结论
非选择性MIP图像和源图像联合阅片可能提高敏感性。
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