0.3T下颈椎的磁化传递对比成像。
Magnetization transfer contrast imaging of the cervical spine at 0.3 T.
作者信息
Yoshioka H, Nishimura H, Masuda T, Nakajima K, Onaya H, Itai Y
机构信息
Department of Radiology, University of Tsukuba, Ibaraki, Japan.
出版信息
J Comput Assist Tomogr. 1994 Nov-Dec;18(6):947-53. doi: 10.1097/00004728-199411000-00020.
OBJECTIVE
We assessed the efficacy of magnetization transfer contrast (MTC) imaging of the cervical spine in conjunction with a gradient recalled echo (GRE) technique using a 0.3 T permanent magnet imager.
MATERIALS AND METHODS
Seventy patients were prospectively investigated. Multislice sagittal and axial images of the cervical spine with and without MTC were obtained using a GRE sequence (TR/TE/flip angle = 750 ms/23 ms/25 degrees). The contrast-to-noise ratios (C/Ns) for CSF versus cord or disk were calculated for quantitative analysis. Qualitative image analysis was also performed.
RESULTS
Both sagittal and axial MTC images had significantly higher C/N values than conventional GRE images. The MTC images showed better differentiation between the CSF and the cord or thecal sac as well as better delineation of the nerve roots. Furthermore, MTC images demonstrated syringomyelia more clearly than conventional images.
CONCLUSION
Magnetization transfer contrast images at 0.3 T are effective for diagnosing diseases of the cervical spine.
目的
我们使用0.3T永磁成像仪，结合梯度回波（GRE）技术评估颈椎的磁化传递对比（MTC）成像的有效性。
材料与方法
前瞻性研究了70例患者。使用GRE序列（TR/TE/翻转角 = 750 ms/23 ms/25°）获取颈椎的多层矢状位和轴位有或无MTC的图像。计算脑脊液与脊髓或椎间盘的对比噪声比（C/N）用于定量分析。还进行了定性图像分析。
结果
矢状位和轴位MTC图像的C/N值均显著高于传统GRE图像。MTC图像显示脑脊液与脊髓或硬膜囊之间的区分更好，神经根的描绘也更好。此外，MTC图像比传统图像更清楚地显示了脊髓空洞症。
结论
0.3T的磁化传递对比图像对诊断颈椎疾病有效。
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