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Home > Issues > SearchComparison of the SPIR and STIR MR Pulse Sequences in an Oil and Water Phantom
Journal of Magnetics, Volume 24, Number 2, 30 Jun 2019, Pages 303-309
Song Yoon Lee (Department of Radiological Science, College of Bioecological Health, Shinhan University), Jin Han (Department of Radiological Science, College of Bioecological Health, Shinhan University), Dae Cheol Kweon * 
(Department of Radiological Science, College of Bioecological Health, Shinhan University)
(Department of Radiological Science, College of Bioecological Health, Shinhan University)
Abstract
The coexistence of fat and water in the human body causes difficulties in obtaining accurate images using magnetic resonance imaging (MRI). This study evaluated the usefulness of the spectral pre-saturation inversion
recovery (SPIR) and short TI inversion recovery (STIR) pulse sequences in suppressing fat. MRI of a water-oil phantom was performed using an Ingenia 3.0-T scanner (Philips Medical Systems, Best, The Netherlands). For
quantitative evaluation of the images, the plot profile, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) were measured and compared using ImageJ program (NIH, Bethesda, MD, USA). The SNR for water
was higher by 56.04 % on STIR (403.59) than on SPIR (258.64). The SNR for fat was higher by 52.10 % on STIR (17.34) than on SPIR (11.40). The CNR was higher by 24.87 % on STIR (308.75) than on SPIR (247.24).
Compared to SPIR, the STIR pulse sequence showed a better fat clearing effect. Therefore, it is necessary to select the appropriate fat suppression method according to the clinical necessity.
recovery (SPIR) and short TI inversion recovery (STIR) pulse sequences in suppressing fat. MRI of a water-oil phantom was performed using an Ingenia 3.0-T scanner (Philips Medical Systems, Best, The Netherlands). For
quantitative evaluation of the images, the plot profile, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) were measured and compared using ImageJ program (NIH, Bethesda, MD, USA). The SNR for water
was higher by 56.04 % on STIR (403.59) than on SPIR (258.64). The SNR for fat was higher by 52.10 % on STIR (17.34) than on SPIR (11.40). The CNR was higher by 24.87 % on STIR (308.75) than on SPIR (247.24).
Compared to SPIR, the STIR pulse sequence showed a better fat clearing effect. Therefore, it is necessary to select the appropriate fat suppression method according to the clinical necessity.
Keywords: Chemical shift; CNR; Fat suppression; MRI; Phantom; SNR; SPIR; STIR
DOI: https://doi.org/10.4283/JMAG.2019.24.2.303
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