常规磁共振成像与快速自旋回波磁共振成像对内侧颞叶硬化的诊断
Diagnosis of mesial temporal sclerosis with conventional versus fast spin-echo MR imaging.
作者信息
Jack C R, Krecke K N, Luetmer P H, Cascino G D, Sharbrough F W, O'Brien P C, Parisi J E
机构信息
Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905.
出版信息
Radiology. 1994 Jul;192(1):123-7. doi: 10.1148/radiology.192.1.8208923.
PURPOSE
To test the accuracy of fast spin-echo (FSE) imaging versus that of double-echo conventional spin-echo (CSE) imaging in identification of the increased hippocampal signal intensity associated with mesial temporal sclerosis (MTS).
MATERIALS AND METHODS
Thirty-four subjects who subsequently underwent anterior temporal lobectomy for intractable seizures and in whom the presence or absence of MTS was ascertained with certainty were imaged with CSE and FSE. Three blinded reviewers evaluated the first and second CSE images (CSE1 and CSE2) and the FSE images.
RESULTS
CSE1 imaging had lower accuracy than FSE (P = .038) and CSE2 (P = .006) imaging. CSE2 imaging was slightly more accurate than FSE imaging (P = .048). Contrast-to-noise ratios were lower for CSE1 imaging than for CSE2 or FSE imaging (P < .001).
CONCLUSION
The FSE sequence evaluated was more time efficient than CSE imaging but slightly less accurate. Therefore, substitution of this sequence for a CSE sequence seems unwarranted.
目的
比较快速自旋回波（FSE）成像与双回波传统自旋回波（CSE）成像在识别与内侧颞叶硬化（MTS）相关的海马信号强度增加方面的准确性。
材料与方法
对34例随后因顽固性癫痫接受前颞叶切除术且已明确有无MTS的受试者进行CSE和FSE成像。三位盲法阅片者评估了第一张和第二张CSE图像（CSE1和CSE2）以及FSE图像。
结果
CSE1成像的准确性低于FSE成像（P = 0.038）和CSE2成像（P = 0.006）。CSE2成像的准确性略高于FSE成像（P = 0.048）。CSE1成像的对比噪声比低于CSE2或FSE成像（P < 0.001）。
结论
所评估的FSE序列比CSE成像更省时，但准确性略低。因此，用该序列替代CSE序列似乎没有必要。
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