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3.0T 磁共振脊柱成像 T2 加权 IDEAL 快速恢复快速自旋回波技术。

MR imaging of the spine at 3.0T with T2-weighted IDEAL fast recovery fast spin-echo technique.

机构信息

Department of Radiology, Navy General Hospital of PLA, Beijing 100048, People's [corrected] Republic of China.

出版信息

Korean J Radiol. 2012 Jan-Feb;13(1):44-52. doi: 10.3348/kjr.2012.13.1.44. Epub 2011 Dec 23.

DOI:10.3348/kjr.2012.13.1.44
PMID:22247635
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3253402/
Abstract

OBJECTIVE

To compare the iterative decomposition of water and fat with echo asymmetry and the least-squares estimation (IDEAL) method with a fat-saturated T2-weighted (T2W) fast recovery fast spin-echo (FRFSE) imaging of the spine.

MATERIALS AND METHODS

Images acquired at 3.0 Tesla (T) in 35 patients with different spine lesions using fat-saturated T2W FRFSE imaging were compared with T2W IDEAL FRFSE images. Signal-to-noise ratio (SNR)-efficiencies measurements were made in the vertebral bodies and spinal cord in the mid-sagittal plane or nearest to the mid-sagittal plane. Images were scored with the consensus of two experienced radiologists on a four-point grading scale for fat suppression and overall image quality. Statistical analysis of SNR-efficiency, fat suppression and image quality scores was performed with a paired Student's t test and Wilcoxon's signed rank test.

RESULTS

Signal-to-noise ratio-efficiency for both vertebral body and spinal cord was higher with T2W IDEAL FRFSE imaging (p < 0.05) than with T2W FRFSE imaging. T2W IDEAL FRFSE demonstrated superior fat suppression (p < 0.01) and image quality (p < 0.01) compared to fat-saturated T2W FRFSE.

CONCLUSION

As compared with fat-saturated T2W FRFSE, IDEAL can provide a higher image quality, higher SNR-efficiency, and consistent, robust and uniform fat suppression. T2W IDEAL FRFSE is a promising technique for MR imaging of the spine at 3.0T.

摘要

目的

比较水脂分解迭代法（IDEAL）与 T2 加权（T2W）快速恢复快速自旋回波（FRFSE）脂肪饱和成像的迭代分解的回声不对称和最小二乘法（least-squares estimation，LS）。

材料与方法

在 3.0T 磁共振扫描仪上对 35 例不同脊柱病变患者进行脂肪饱和 T2W FRFSE 成像与 T2W IDEAL FRFSE 成像，对两者进行对比。在正中矢状面或最接近正中矢状面的中矢状面上对椎体和脊髓进行信噪比（signal-to-noise ratio，SNR）效率测量。两位有经验的放射科医生对脂肪抑制和整体图像质量进行四点分级评分。对 SNR 效率、脂肪抑制和图像质量评分进行配对学生 t 检验和 Wilcoxon 符号秩检验。

结果

T2W IDEAL FRFSE 成像的 SNR 效率在椎体和脊髓均高于 T2W FRFSE 成像（p < 0.05）。T2W IDEAL FRFSE 成像在脂肪抑制（p < 0.01）和图像质量（p < 0.01）方面均优于脂肪饱和 T2W FRFSE 成像。

结论

与脂肪饱和 T2W FRFSE 成像相比，IDEAL 可提供更高的图像质量、更高的 SNR 效率，以及一致、稳健和均匀的脂肪抑制。T2W IDEAL FRFSE 是一种有前途的 3.0T 磁共振脊柱成像技术。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/f3ccbcb2ded5/kjr-13-44-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/1dbe44e17401/kjr-13-44-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/e904569eeb41/kjr-13-44-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/31014f9fcaf2/kjr-13-44-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/a56675f6f146/kjr-13-44-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/f3ccbcb2ded5/kjr-13-44-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/1dbe44e17401/kjr-13-44-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/e904569eeb41/kjr-13-44-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/31014f9fcaf2/kjr-13-44-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/a56675f6f146/kjr-13-44-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f1b2/3253402/f3ccbcb2ded5/kjr-13-44-g005.jpg

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