Three-dimensional T2-weighted imaging for liver MRI: Clinical values of tissue-specific variable refocusing flip-angle turbo spin echo imaging

Yukihisa Takayama, Akihiro Nishie, Yoshiki Asayama, Yasuhiro Ushijima, Nobuhiro Fujita, Dai Shimamoto, Takashi Yoshiura, Makoto Obara, Atsushi Takemura, Masami Yoneyama, Hiroshi Honda

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Abstract

Purpose: To assess the clinical utility of tissue-specific variable refocusing flip-angle (VRFA) turbo-spin echo imaging for three-dimensional T2-weighted imaging (3D-T2WI) of the liver. Materials and Methods: Fifty-nine patients were scanned with three types of fat-suppressed T2WI for the comparison: two-dimensional single-shot turbo spin echo T2WI (ssT2WI), 3D-T2WI with tissue-specific VRFA (VISTA-TSV), and 3D-T2WI with low-constant VRFA (VISTA). Qualitatively, artifacts in the left and right lobes of the liver and black-blood effects in the liver were compared using the Wilcoxon signed-rank test with the Bonferroni correction. The detection and correct characterization rates of liver lesions were compared using McNemar's test. Results: VISTA-TSV showed reduced artifacts in the left and right lobes of the liver compared with VISTA (P < 0.017). The artifacts shown by VISTA-TSV were equivalent to those shown by ssT2WI. The black-blood effects of VISTA-TSV and VISTA were better than that of ssT2WI (P < 0.017). VISTA-TSV showed the best detection and correct characterization rate of liver lesions among the three imaging techniques (P < 0.05). Conclusion: 3D-T2WI with tissue-specific VRFA can reduce artifacts of the liver, sufficiently suppress the signal in blood vessels, and has a potential to improve the detection and correct characterization rates of liver lesions.

Original languageEnglish
Pages (from-to)339-346
Number of pages8
JournalJournal of Magnetic Resonance Imaging
Volume41
Issue number2
DOIs
Publication statusPublished - Feb 1 2015

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Magnetic Resonance Imaging
Liver
Artifacts
Nonparametric Statistics
Blood Vessels
Fats

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Three-dimensional T2-weighted imaging for liver MRI : Clinical values of tissue-specific variable refocusing flip-angle turbo spin echo imaging. / Takayama, Yukihisa; Nishie, Akihiro; Asayama, Yoshiki; Ushijima, Yasuhiro; Fujita, Nobuhiro; Shimamoto, Dai; Yoshiura, Takashi; Obara, Makoto; Takemura, Atsushi; Yoneyama, Masami; Honda, Hiroshi.

In: Journal of Magnetic Resonance Imaging, Vol. 41, No. 2, 01.02.2015, p. 339-346.

Research output: Contribution to journalArticle

Takayama, Yukihisa ; Nishie, Akihiro ; Asayama, Yoshiki ; Ushijima, Yasuhiro ; Fujita, Nobuhiro ; Shimamoto, Dai ; Yoshiura, Takashi ; Obara, Makoto ; Takemura, Atsushi ; Yoneyama, Masami ; Honda, Hiroshi. / Three-dimensional T2-weighted imaging for liver MRI : Clinical values of tissue-specific variable refocusing flip-angle turbo spin echo imaging. In: Journal of Magnetic Resonance Imaging. 2015 ; Vol. 41, No. 2. pp. 339-346.
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AU - Asayama, Yoshiki

AU - Ushijima, Yasuhiro

AU - Fujita, Nobuhiro

AU - Shimamoto, Dai

AU - Yoshiura, Takashi

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N2 - Purpose: To assess the clinical utility of tissue-specific variable refocusing flip-angle (VRFA) turbo-spin echo imaging for three-dimensional T2-weighted imaging (3D-T2WI) of the liver. Materials and Methods: Fifty-nine patients were scanned with three types of fat-suppressed T2WI for the comparison: two-dimensional single-shot turbo spin echo T2WI (ssT2WI), 3D-T2WI with tissue-specific VRFA (VISTA-TSV), and 3D-T2WI with low-constant VRFA (VISTA). Qualitatively, artifacts in the left and right lobes of the liver and black-blood effects in the liver were compared using the Wilcoxon signed-rank test with the Bonferroni correction. The detection and correct characterization rates of liver lesions were compared using McNemar's test. Results: VISTA-TSV showed reduced artifacts in the left and right lobes of the liver compared with VISTA (P < 0.017). The artifacts shown by VISTA-TSV were equivalent to those shown by ssT2WI. The black-blood effects of VISTA-TSV and VISTA were better than that of ssT2WI (P < 0.017). VISTA-TSV showed the best detection and correct characterization rate of liver lesions among the three imaging techniques (P < 0.05). Conclusion: 3D-T2WI with tissue-specific VRFA can reduce artifacts of the liver, sufficiently suppress the signal in blood vessels, and has a potential to improve the detection and correct characterization rates of liver lesions.

AB - Purpose: To assess the clinical utility of tissue-specific variable refocusing flip-angle (VRFA) turbo-spin echo imaging for three-dimensional T2-weighted imaging (3D-T2WI) of the liver. Materials and Methods: Fifty-nine patients were scanned with three types of fat-suppressed T2WI for the comparison: two-dimensional single-shot turbo spin echo T2WI (ssT2WI), 3D-T2WI with tissue-specific VRFA (VISTA-TSV), and 3D-T2WI with low-constant VRFA (VISTA). Qualitatively, artifacts in the left and right lobes of the liver and black-blood effects in the liver were compared using the Wilcoxon signed-rank test with the Bonferroni correction. The detection and correct characterization rates of liver lesions were compared using McNemar's test. Results: VISTA-TSV showed reduced artifacts in the left and right lobes of the liver compared with VISTA (P < 0.017). The artifacts shown by VISTA-TSV were equivalent to those shown by ssT2WI. The black-blood effects of VISTA-TSV and VISTA were better than that of ssT2WI (P < 0.017). VISTA-TSV showed the best detection and correct characterization rate of liver lesions among the three imaging techniques (P < 0.05). Conclusion: 3D-T2WI with tissue-specific VRFA can reduce artifacts of the liver, sufficiently suppress the signal in blood vessels, and has a potential to improve the detection and correct characterization rates of liver lesions.

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