Image quality of Gd-EOB-DTPA-enhanced magnetic resonance imaging of the liver using dual-source parallel radiofrequency transmission technology

Comparison with the post-processing correction method for B1 inhomogeneity-induced signal loss

Yukihisa Takayama, Akihiro Nishie, Yoshiki Asayama, Kosei Ishigami, Daisuke Kakihara, Tomohiro Nakayama, Takashi Yoshiura, Makoto Obara, Masakazu Hirakawa, Hiroshi Honda

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Abstract

Purpose: To evaluate the efficacy of the dual-source parallel radiofrequency system (DS system) for gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI). Materials and methods: Twenty-six subjects with liver diseases underwent hepatobiliary phase imaging of Gd-EOB-MRI using either the DS system or a single-source radiofrequency system with or without body-tuned CLEAR, which is a post-processing correction method of B1 inhomogeneity-induced signal loss (SSBTC+ and SSBTC-, respectively). The left and right lobes of the liver were separately assessed. Qualitatively, the homogeneity of signal intensity distribution was scored using a 3-point scale. Quantitatively, lesion-to-liver and spleen-to-liver contrast ratios (CRs) were calculated. The scores and CRs were compared among the three techniques by two-way analysis of variance and Tukey's Honestly Significant Difference post hoc test. Values of p < 0.05 were considered statistically significant for each analysis. Results: The DS system showed a significantly better score in the left lobe of the liver, and higher lesion-to-liver and spleen-to-liver CRs in the left and right lobes of the liver, compared with SSBTC+ or SSBTC- (p < 0.05). The DS system and SSBTC- showed no significant differences in scores in the right lobe of the liver but they showed significantly better scores than SSBTC+ (p < 0.05). Conclusion: The DS system is more advantageous to improve the homogeneity of signal intensity distribution and tissue contrast of Gd-EOB-MRI than the post-processing correction method independently of the site.

Original languageEnglish
Pages (from-to)3035-3040
Number of pages6
JournalEuropean Journal of Radiology
Volume81
Issue number11
DOIs
Publication statusPublished - Nov 1 2012

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Magnetic Resonance Imaging
Technology
Liver
Pentetic Acid
Gadolinium
Spleen
gadolinium ethoxybenzyl DTPA
Tissue Distribution
Liver Diseases
Analysis of Variance

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

@article{57ff0b22c47b4fe3ba8a945a0d9ab550,
title = "Image quality of Gd-EOB-DTPA-enhanced magnetic resonance imaging of the liver using dual-source parallel radiofrequency transmission technology: Comparison with the post-processing correction method for B1 inhomogeneity-induced signal loss",
abstract = "Purpose: To evaluate the efficacy of the dual-source parallel radiofrequency system (DS system) for gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI). Materials and methods: Twenty-six subjects with liver diseases underwent hepatobiliary phase imaging of Gd-EOB-MRI using either the DS system or a single-source radiofrequency system with or without body-tuned CLEAR, which is a post-processing correction method of B1 inhomogeneity-induced signal loss (SSBTC+ and SSBTC-, respectively). The left and right lobes of the liver were separately assessed. Qualitatively, the homogeneity of signal intensity distribution was scored using a 3-point scale. Quantitatively, lesion-to-liver and spleen-to-liver contrast ratios (CRs) were calculated. The scores and CRs were compared among the three techniques by two-way analysis of variance and Tukey's Honestly Significant Difference post hoc test. Values of p < 0.05 were considered statistically significant for each analysis. Results: The DS system showed a significantly better score in the left lobe of the liver, and higher lesion-to-liver and spleen-to-liver CRs in the left and right lobes of the liver, compared with SSBTC+ or SSBTC- (p < 0.05). The DS system and SSBTC- showed no significant differences in scores in the right lobe of the liver but they showed significantly better scores than SSBTC+ (p < 0.05). Conclusion: The DS system is more advantageous to improve the homogeneity of signal intensity distribution and tissue contrast of Gd-EOB-MRI than the post-processing correction method independently of the site.",
author = "Yukihisa Takayama and Akihiro Nishie and Yoshiki Asayama and Kosei Ishigami and Daisuke Kakihara and Tomohiro Nakayama and Takashi Yoshiura and Makoto Obara and Masakazu Hirakawa and Hiroshi Honda",
year = "2012",
month = "11",
day = "1",
doi = "10.1016/j.ejrad.2012.03.026",
language = "English",
volume = "81",
pages = "3035--3040",
journal = "European Journal of Radiology",
issn = "0720-048X",
publisher = "Elsevier Ireland Ltd",
number = "11",

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TY - JOUR

T1 - Image quality of Gd-EOB-DTPA-enhanced magnetic resonance imaging of the liver using dual-source parallel radiofrequency transmission technology

T2 - Comparison with the post-processing correction method for B1 inhomogeneity-induced signal loss

AU - Takayama, Yukihisa

AU - Nishie, Akihiro

AU - Asayama, Yoshiki

AU - Ishigami, Kosei

AU - Kakihara, Daisuke

AU - Nakayama, Tomohiro

AU - Yoshiura, Takashi

AU - Obara, Makoto

AU - Hirakawa, Masakazu

AU - Honda, Hiroshi

PY - 2012/11/1

Y1 - 2012/11/1

N2 - Purpose: To evaluate the efficacy of the dual-source parallel radiofrequency system (DS system) for gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI). Materials and methods: Twenty-six subjects with liver diseases underwent hepatobiliary phase imaging of Gd-EOB-MRI using either the DS system or a single-source radiofrequency system with or without body-tuned CLEAR, which is a post-processing correction method of B1 inhomogeneity-induced signal loss (SSBTC+ and SSBTC-, respectively). The left and right lobes of the liver were separately assessed. Qualitatively, the homogeneity of signal intensity distribution was scored using a 3-point scale. Quantitatively, lesion-to-liver and spleen-to-liver contrast ratios (CRs) were calculated. The scores and CRs were compared among the three techniques by two-way analysis of variance and Tukey's Honestly Significant Difference post hoc test. Values of p < 0.05 were considered statistically significant for each analysis. Results: The DS system showed a significantly better score in the left lobe of the liver, and higher lesion-to-liver and spleen-to-liver CRs in the left and right lobes of the liver, compared with SSBTC+ or SSBTC- (p < 0.05). The DS system and SSBTC- showed no significant differences in scores in the right lobe of the liver but they showed significantly better scores than SSBTC+ (p < 0.05). Conclusion: The DS system is more advantageous to improve the homogeneity of signal intensity distribution and tissue contrast of Gd-EOB-MRI than the post-processing correction method independently of the site.

AB - Purpose: To evaluate the efficacy of the dual-source parallel radiofrequency system (DS system) for gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI). Materials and methods: Twenty-six subjects with liver diseases underwent hepatobiliary phase imaging of Gd-EOB-MRI using either the DS system or a single-source radiofrequency system with or without body-tuned CLEAR, which is a post-processing correction method of B1 inhomogeneity-induced signal loss (SSBTC+ and SSBTC-, respectively). The left and right lobes of the liver were separately assessed. Qualitatively, the homogeneity of signal intensity distribution was scored using a 3-point scale. Quantitatively, lesion-to-liver and spleen-to-liver contrast ratios (CRs) were calculated. The scores and CRs were compared among the three techniques by two-way analysis of variance and Tukey's Honestly Significant Difference post hoc test. Values of p < 0.05 were considered statistically significant for each analysis. Results: The DS system showed a significantly better score in the left lobe of the liver, and higher lesion-to-liver and spleen-to-liver CRs in the left and right lobes of the liver, compared with SSBTC+ or SSBTC- (p < 0.05). The DS system and SSBTC- showed no significant differences in scores in the right lobe of the liver but they showed significantly better scores than SSBTC+ (p < 0.05). Conclusion: The DS system is more advantageous to improve the homogeneity of signal intensity distribution and tissue contrast of Gd-EOB-MRI than the post-processing correction method independently of the site.

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U2 - 10.1016/j.ejrad.2012.03.026

DO - 10.1016/j.ejrad.2012.03.026

M3 - Article

VL - 81

SP - 3035

EP - 3040

JO - European Journal of Radiology

JF - European Journal of Radiology

SN - 0720-048X

IS - 11

ER -