Alberto Tagliafico1, Bianca Bignotti2, Giulio Tagliafico3, Carlo Martinoli4. 1. Department of Experimental Medicine (DIMES), Institute of Anatomy, University of Genoa, Via de Toni 14, 16132, Genoa, Italy. atagliafico@sirm.org. 2. Department of Health Sciences (DISSAL), University of Genoa, Via Pastore 2, 16132, Genoa, Italy. bignottibianca@gmail.com. 3. Consiglio Nazionale delle Ricerche, Istituto di Matematica Applicata e Tecnologie, Via De Marini 6, 16149, Genoa, Italy. giu.taglia@gmail.com. 4. Department of Health Sciences (DISSAL), University of Genoa, Via Pastore 2, 16132, Genoa, Italy. carlo.martinoli@unige.it.
Abstract
PURPOSE: To quantitatively and qualitatively compare fat-suppressed MR imaging quality using iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL) with that using frequency-selective fat-suppressed (FSFS) T2 images of the brachial plexus at 3.0 T. MATERIALS AND METHODS: Prospective MR image analysis was performed in 40 volunteers and 40 patients at a single centre. Oblique-sagittal and coronal IDEAL fat-suppressed T2 images and FSFS T2 images were compared. Visual assessment was performed by two independent musculoskeletal radiologists with respect to: (1) susceptibility artefacts around the neck, (2) homogeneity of fat suppression, (3) image sharpness and (4) tissue resolution contrast of pathologies. The signal-to-noise ratios (SNR) for each image sequence were assessed. RESULTS: Compared to FSFS sequences, IDEAL fat-suppressed T2 images significantly reduced artefacts around the brachial plexus and significantly improved homogeneous fat suppression (p < 0.05). IDEAL significantly improved sharpness and lesion-to-tissue contrast (p < 0.05). The mean SNRs were significantly improved on T2-weighted IDEAL images (p < 0.05). CONCLUSION: IDEAL technique improved image quality by reducing artefacts around the brachial plexus while maintaining a high SNR and provided superior homogeneous fat suppression than FSFS sequences.
PURPOSE: To quantitatively and qualitatively compare fat-suppressed MR imaging quality using iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL) with that using frequency-selective fat-suppressed (FSFS) T2 images of the brachial plexus at 3.0 T. MATERIALS AND METHODS: Prospective MR image analysis was performed in 40 volunteers and 40 patients at a single centre. Oblique-sagittal and coronal IDEAL fat-suppressed T2 images and FSFS T2 images were compared. Visual assessment was performed by two independent musculoskeletal radiologists with respect to: (1) susceptibility artefacts around the neck, (2) homogeneity of fat suppression, (3) image sharpness and (4) tissue resolution contrast of pathologies. The signal-to-noise ratios (SNR) for each image sequence were assessed. RESULTS: Compared to FSFS sequences, IDEAL fat-suppressed T2 images significantly reduced artefacts around the brachial plexus and significantly improved homogeneous fat suppression (p < 0.05). IDEAL significantly improved sharpness and lesion-to-tissue contrast (p < 0.05). The mean SNRs were significantly improved on T2-weighted IDEAL images (p < 0.05). CONCLUSION: IDEAL technique improved image quality by reducing artefacts around the brachial plexus while maintaining a high SNR and provided superior homogeneous fat suppression than FSFS sequences.
Authors: Scott B Reeder; Angel R Pineda; Zhifei Wen; Ann Shimakawa; Huanzhou Yu; Jean H Brittain; Garry E Gold; Christopher H Beaulieu; Norbert J Pelc Journal: Magn Reson Med Date: 2005-09 Impact factor: 4.668
Authors: Scott B Reeder; Charles A McKenzie; Angel R Pineda; Huanzhou Yu; Ann Shimakawa; Anja C Brau; Brian A Hargreaves; Garry E Gold; Jean H Brittain Journal: J Magn Reson Imaging Date: 2007-03 Impact factor: 4.813
Authors: Thomas Kirchgesner; Maria Stoenoiu; Patrick Durez; Nicolas Michoux; Bruno Vande Berg Journal: J Belg Soc Radiol Date: 2022-01-10 Impact factor: 1.894