• Korean J Radiol · Jan 2012

    Comparative Study

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

    • Ai-Jun Ren, Yong Guo, Shu-Ping Tian, Li-Jing Shi, and Min-Hua Huang.
    • Department of Radiology, Navy General Hospital of PLA, Beijing 100048, People's [corrected] Republic of China. nrren@yahoo.com
    • Korean J Radiol. 2012 Jan 1; 13 (1): 44-52.

    ObjectiveTo 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 MethodsImages 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.ResultsSignal-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.ConclusionAs 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.

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