Comparing T1-weighted and T2-weighted three-point Dixon technique with conventional T1-weighted fat-saturation and short-tau inversion recovery (STIR) techniques for the study of the lumbar spine in a short-bore MRI machine

Brandão, Sofia; Seixas, Daniela; Ayres-Basto, Margarida; Castro, S.; Neto, João Simão de Melo; Martins, Catarina; Ferreira, Jacielle Carolina; Parada, Fernando

doi:10.1016/j.crad.2013.06.004

Cited by 46 publications

(40 citation statements)

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“…If the fat suppression quality of T2 Dixon is superior to that of conventional techniques, T2 Dixon is expected to demonstrate its clinical usefulness as it not only reduces the scan time but also obtains a better quality fat suppression image. There have been several reports comparing T2 Dixon and conventional fat suppression techniques in the evaluation of the lumbar spine (3,8,12). However, to our best knowledge, there has been no comparative study of T2 Dixon and SPAIR which are more advanced fat suppression techniques.…”

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confidence: 95%

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FSE T2-weighted two-point Dixon technique for fat suppression in the lumbar spine: comparison with SPAIR technique

Lee

Choi

Shin

et al. 2018

Diagn Interv Radiol

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PURPOSEFat suppression magnetic resonance imaging (MRI) technique has been used to improve the diagnostic confidence in lumbar spine diseases. We aimed to compare T2-weighted water-fat separation technique (T2 Dixon) with spectral attenuated inversion recovery (SPAIR) image for fat suppression. METHODSLumbar spine MRI examinations were performed in 79 patients by using a 3.0 T machine. We compared T2 Dixon water-only image and SPAIR image for the evaluation of fat suppression quality and lesion conspicuity. For qualitative evaluation, two radiologists scored the images from Dixon and SPAIR for fat suppression uniformity and lesion conspicuity. Quantitative assessment was also performed for 39 lesions in 26 patients who had lesions in their spine bodies. Contrast ratio (CR) and contrast-to-noise ratio (CNR) were calculated by signal intensity measurement of the lesions, adjacent bodies, and background noise. The Wilcoxon's signed-rank test and paired sample t-test were used to assess the statistical significance of qualitative and quantitative data, respectively. RESULTSFor qualitative assessment, T2 Dixon water-only image showed higher mean scores for fat suppression quality and lesion conspicuity than SPAIR (2.99±0.11 vs. 2.18±0.38 and 2.84±0.37 vs. 2.28±0.51, respectively). For quantitative measurement, the CR and CNR values of the lesions were higher on T2 Dixon than on SPAIR. Both qualitative and quantitative results showed statistically significant differences between T2 Dixon and SPAIR (P < 0.01 in all). (1-3). However, the train of 180° rephasing pulses in FSE and short T1 relaxation time of fat affect J-coupling modulation, which produces bright signal of the fat on T2-weighted image (4). Increased signal of the fat on T2-weighted image can obscure underlying pathology with elongated T2 signal such as edema, bone marrow infiltration, and metastasis (5). Thus, additional T2-weighted image with fat suppression is necessary to improve visualization of abnormalities in an anatomical region with abundant fat component such as the lumbar spine. CONCLUSIONSeveral fat suppression techniques have been developed and widely used: chemical shift-selective saturation (CHESS), short-tau inversion recovery (STIR) and spectral attenuated inversion recovery (SPAIR) (6-8). The CHESS and STIR have advantages and disadvantages. Although CHESS has advantages of selectivity for fat and high signal-to-noise ratio (SNR), it is vulnerable to magnetic field inhomogeneity. STIR is insensitive to magnetic field inhomogeneity; however, it is not specific for fat. SPAIR is a hybrid technique combining the fat selectivity of CHESS and the inversion radiofrequency pulse of STIR. Thus, it has advantages of high fat selectivity and low vulnerability to the magnetic field inhomogeneity (7, 9).

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confidence: 95%

“…Several fat suppression techniques have been developed and widely used: chemical shift-selective saturation (CHESS), short-tau inversion recovery (STIR) and spectral attenuated inversion recovery (SPAIR) (6)(7)(8). The CHESS and STIR have advantages and disadvantages.…”

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confidence: 99%

FSE T2-weighted two-point Dixon technique for fat suppression in the lumbar spine: comparison with SPAIR technique

Lee

Choi

Shin

et al. 2018

Diagn Interv Radiol

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“…The mDixon sequences included one in-phase and two out-of-phase loops (water and fat protons), which resulted in three separate echoes. 3 Fat and water phase shift for each echo was 0, p and 2p. For fat-water separation, a phase-unwrapping algorithm was adopted.…”

Section: Mr Parametersmentioning

confidence: 99%

“…2 The three-point Dixon (mDixon) technique using a three-phase difference (0, p and 2p) between fat and water signals allows a flexible echo time and sequence design and compensates for B 0 field heterogeneity. 3 The mDixon therefore produces homogeneous fat and water separation that is less sensitive to B 0 field heterogeneity. 4,5 The mDixon technique provides rapid T 2 weighted imaging (T2WI) with and without FS; addition and subtraction of the separate images yields a fatonly and a water-only image.…”

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confidence: 99%

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Usefulness of the fast spin-echo three-point Dixon (mDixon) image of the knee joint on 3.0-T MRI: comparison with conventional fast spin-echoT₂weighted image

Park¹,

Lee²,

Rho³

et al. 2016

BJR

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Frequency Offset Corrected Inversion Pulse for B₀ and B₁ Insensitive Fat Suppression at 3T: Application to MR Neurography of Brachial Plexus

Wang

Greer

Dimitrov

et al. 2018

Magnetic Resonance Imaging

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Comparing T1-weighted and T2-weighted three-point Dixon technique with conventional T1-weighted fat-saturation and short-tau inversion recovery (STIR) techniques for the study of the lumbar spine in a short-bore MRI machine

Cited by 46 publications

References 28 publications

FSE T2-weighted two-point Dixon technique for fat suppression in the lumbar spine: comparison with SPAIR technique

FSE T2-weighted two-point Dixon technique for fat suppression in the lumbar spine: comparison with SPAIR technique

Usefulness of the fast spin-echo three-point Dixon (mDixon) image of the knee joint on 3.0-T MRI: comparison with conventional fast spin-echoT₂weighted image

Frequency Offset Corrected Inversion Pulse for B₀ and B₁ Insensitive Fat Suppression at 3T: Application to MR Neurography of Brachial Plexus

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Comparing T1-weighted and T2-weighted three-point Dixon technique with conventional T1-weighted fat-saturation and short-tau inversion recovery (STIR) techniques for the study of the lumbar spine in a short-bore MRI machine

Cited by 46 publications

References 28 publications

FSE T2-weighted two-point Dixon technique for fat suppression in the lumbar spine: comparison with SPAIR technique

FSE T2-weighted two-point Dixon technique for fat suppression in the lumbar spine: comparison with SPAIR technique

Usefulness of the fast spin-echo three-point Dixon (mDixon) image of the knee joint on 3.0-T MRI: comparison with conventional fast spin-echoT2weighted image

Frequency Offset Corrected Inversion Pulse for B0 and B1 Insensitive Fat Suppression at 3T: Application to MR Neurography of Brachial Plexus

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Usefulness of the fast spin-echo three-point Dixon (mDixon) image of the knee joint on 3.0-T MRI: comparison with conventional fast spin-echoT₂weighted image

Frequency Offset Corrected Inversion Pulse for B₀ and B₁ Insensitive Fat Suppression at 3T: Application to MR Neurography of Brachial Plexus