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MR imaging of the abdomen with a phased-array multicoil: prospective clinical evaluation.

机译:使用相控阵多线圈对腹部进行MR成像:前瞻性临床评估。

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PURPOSE: To prospectively compare use of a phased-array multicoil and a conventional body coil in abdominal MR imaging. MATERIALS AND METHODS: Thirteen patients (seven men, six women; mean age, 55 years) underwent imaging with a phased-array multicoil and with a conventional body coil. Four pulse sequences were used: T2-weighted spin echo (SE), magnetization-prepared gradient-recalled echo (GRE), breath-hold fast SE, and echo planar (EP). RESULTS: Lesion detection improved the most on fast SE, multicoil-acquired images. Signal-to-noise ratio (S/N) increased 64% with fast SE (P = .0005) and EP (P < .0109) sequences. Contrast-to-noise ratio (C/N) doubled (P < .05) with T2-weighted SE sequences. Lesion conspicuity improved on multicoil-acquired images with all fast sequences (magnetization-prepared GRE, P = .015; fast SE, P = .002; EP imaging, P = .013). There was little difference in respiratory and vascular artifact. Depiction of most abdominal structures improved (P < .01). CONCLUSION: Use of the phased-array multicoil provides better MR images of the abdomen than does use of a conventional body coil.
机译:目的:前瞻性比较腹部磁共振成像中相控阵多层线圈和常规线圈的使用。材料与方法:13例患者(男7例,女6例;平均年龄55岁)接受了相控阵多层线圈和常规人体线圈的成像。使用了四个脉冲序列:T2加权自旋回波(SE),磁化准备的梯度回波(GRE),屏气快速SE和平面回波(EP)。结果:病变检测在快速SE,多线圈采集的图像上得到了最大的改善。快速SE(P = .0005)和EP(P <.0109)序列可提高信噪比(S / N)。 T2加权SE序列的对比度(C / N)加倍(P <.05)。在所有快速序列下(多磁化制备的GRE,P = .015;快速的SE,P = .002; EP成像,P = .013),在多线圈获取的图像上病变的明显性得到了改善。呼吸和血管伪像几乎没有差异。大多数腹部结构的描述得到改善(P <.01)。结论:相控阵多线圈的使用提供了比常规体线圈更好的腹部MR图像。

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