Histogram analysis of gadoxetic acid-enhanced MRI for quantitative hepatic fibrosis measurement

Honsoul Kim, Seong Ho Park, Eunkyung Kim, Myeong Jin Kim, Young Nyun Park, Hae Jeong Park, Jin Young Choi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Purpose: The diagnosis and monitoring of liver fibrosis is an important clinical issue; however, this is usually achieved by invasive methods such as biopsy. We aimed to determine whether histogram analysis of hepatobiliary phase images of gadoxetic acid-enhanced magnetic resonance imaging (MRI) can provide non-invasive quantitative measurement of liver fibrosis. Methods: This retrospective study was approved by the institutional ethics committee, and a waiver of informed consent was obtained. Hepatobiliary phase images of preoperative gadoxetic acid-enhanced MRI studies of 105 patients (69 males, 36 females; age 56.1±12.2) with pathologically documented liver fibrosis grades were analyzed. Fibrosis staging was F0/F1/F2/F3/F4 (METAVIR system) for 11/20/13/15/46 patients, respectively. Four regions-of-interest (ROI, each about 2 cm 2 ) were placed on predetermined locations of representative images. The measured signal intensity of pixels in each ROI was used to calculate corrected coefficient of variation (cCV), skewness, and kurtosis. An average value of each parameter was calculated for comparison. Statistical analysis was performed by ANOVA, receiver operating characteristic (ROC) curve analysis, and linear regression. Results: The cCV showed statistically significant differences among pathological fibrosis grades (P<0.001) whereas skewness and kurtosis did not. Univariable linear regression analysis suggested cCV to be a meaningful parameter in predicting the fibrosis grade (P<0.001, β50.40 and standard error =0.06). For discriminating F0-3 from F4, the area under ROC score was 0.857, standard deviation 0.036, 95% confidence interval 0.785-0.928. Conclusion: Histogram analysis of hepatobiliary phase images of gadoxetic acid-enhanced MRI can provide non-invasive quantitative measurements of hepatic fibrosis.

Original languageEnglish
Article numbere114224
JournalPloS one
Volume9
Issue number12
DOIs
Publication statusPublished - 2014 Dec 2

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liver cirrhosis
Magnetic resonance
magnetic resonance imaging
Liver
Fibrosis
fibrosis
Magnetic Resonance Imaging
Liver Cirrhosis
Imaging techniques
Linear regression
acids
ROC Curve
Linear Models
Biopsy
Analysis of variance (ANOVA)
Regression analysis
Ethics Committees
Statistical methods
ethics
Pixels

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Kim, H., Park, S. H., Kim, E., Kim, M. J., Park, Y. N., Park, H. J., & Choi, J. Y. (2014). Histogram analysis of gadoxetic acid-enhanced MRI for quantitative hepatic fibrosis measurement. PloS one, 9(12), [e114224]. https://doi.org/10.1371/journal.pone.0114224
Kim, Honsoul ; Park, Seong Ho ; Kim, Eunkyung ; Kim, Myeong Jin ; Park, Young Nyun ; Park, Hae Jeong ; Choi, Jin Young. / Histogram analysis of gadoxetic acid-enhanced MRI for quantitative hepatic fibrosis measurement. In: PloS one. 2014 ; Vol. 9, No. 12.
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abstract = "Purpose: The diagnosis and monitoring of liver fibrosis is an important clinical issue; however, this is usually achieved by invasive methods such as biopsy. We aimed to determine whether histogram analysis of hepatobiliary phase images of gadoxetic acid-enhanced magnetic resonance imaging (MRI) can provide non-invasive quantitative measurement of liver fibrosis. Methods: This retrospective study was approved by the institutional ethics committee, and a waiver of informed consent was obtained. Hepatobiliary phase images of preoperative gadoxetic acid-enhanced MRI studies of 105 patients (69 males, 36 females; age 56.1±12.2) with pathologically documented liver fibrosis grades were analyzed. Fibrosis staging was F0/F1/F2/F3/F4 (METAVIR system) for 11/20/13/15/46 patients, respectively. Four regions-of-interest (ROI, each about 2 cm 2 ) were placed on predetermined locations of representative images. The measured signal intensity of pixels in each ROI was used to calculate corrected coefficient of variation (cCV), skewness, and kurtosis. An average value of each parameter was calculated for comparison. Statistical analysis was performed by ANOVA, receiver operating characteristic (ROC) curve analysis, and linear regression. Results: The cCV showed statistically significant differences among pathological fibrosis grades (P<0.001) whereas skewness and kurtosis did not. Univariable linear regression analysis suggested cCV to be a meaningful parameter in predicting the fibrosis grade (P<0.001, β50.40 and standard error =0.06). For discriminating F0-3 from F4, the area under ROC score was 0.857, standard deviation 0.036, 95{\%} confidence interval 0.785-0.928. Conclusion: Histogram analysis of hepatobiliary phase images of gadoxetic acid-enhanced MRI can provide non-invasive quantitative measurements of hepatic fibrosis.",
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Histogram analysis of gadoxetic acid-enhanced MRI for quantitative hepatic fibrosis measurement. / Kim, Honsoul; Park, Seong Ho; Kim, Eunkyung; Kim, Myeong Jin; Park, Young Nyun; Park, Hae Jeong; Choi, Jin Young.

In: PloS one, Vol. 9, No. 12, e114224, 02.12.2014.

Research output: Contribution to journalArticle

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AU - Kim, Eunkyung

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AU - Choi, Jin Young

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AB - Purpose: The diagnosis and monitoring of liver fibrosis is an important clinical issue; however, this is usually achieved by invasive methods such as biopsy. We aimed to determine whether histogram analysis of hepatobiliary phase images of gadoxetic acid-enhanced magnetic resonance imaging (MRI) can provide non-invasive quantitative measurement of liver fibrosis. Methods: This retrospective study was approved by the institutional ethics committee, and a waiver of informed consent was obtained. Hepatobiliary phase images of preoperative gadoxetic acid-enhanced MRI studies of 105 patients (69 males, 36 females; age 56.1±12.2) with pathologically documented liver fibrosis grades were analyzed. Fibrosis staging was F0/F1/F2/F3/F4 (METAVIR system) for 11/20/13/15/46 patients, respectively. Four regions-of-interest (ROI, each about 2 cm 2 ) were placed on predetermined locations of representative images. The measured signal intensity of pixels in each ROI was used to calculate corrected coefficient of variation (cCV), skewness, and kurtosis. An average value of each parameter was calculated for comparison. Statistical analysis was performed by ANOVA, receiver operating characteristic (ROC) curve analysis, and linear regression. Results: The cCV showed statistically significant differences among pathological fibrosis grades (P<0.001) whereas skewness and kurtosis did not. Univariable linear regression analysis suggested cCV to be a meaningful parameter in predicting the fibrosis grade (P<0.001, β50.40 and standard error =0.06). For discriminating F0-3 from F4, the area under ROC score was 0.857, standard deviation 0.036, 95% confidence interval 0.785-0.928. Conclusion: Histogram analysis of hepatobiliary phase images of gadoxetic acid-enhanced MRI can provide non-invasive quantitative measurements of hepatic fibrosis.

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