Evaluation of the severity of chronic hepatitis C with 3-T 1H-MR spectroscopy

Antonio Orlacchio, Francesca Bolacchi, Marcello Cadioli, Alberto Bergamini, Valeria Cozzolino, Mario Angelico, Giovanni Simonetti

Research output: Contribution to journalArticle

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Abstract

OBJECTIVE. The purpose of this study was to compare the spectral characteristics of lipids, choline-containing com pounds, and glutamine-glutamate complex assessed with 1H-MR spectroscopy with the histologic findings in patients with chronic hepatitis C. SUBJECTS AND METHODS. Nine healthy controls and 30 patients with biopsy-proven hepatitis C virus-related liver disease participated in this prospective study. Degree of fibrosis and histologic activity were scored according to the METAVIR classification. The percentage of involved hepatocytes was used to grade steatosis. Hepatic spectra were obtained with a 3-T spectroscopic system. Tenfold cross-validated stepwise discriminant analysis was performed to classify disease severity on the basis of the spectroscopic findings. RESULTS. There was a strong correlation between 1H-MR spectroscopically measured lipid concentration and the degree of steatosis at histologic examination (r = 0.9236, p <0.0001). This finding enabled clear separation of groups according to degree of histologically determined steatosis. Variation in lipid concentration was consistent with the degree of steatosis (r = 0.7265, p <0.0001) and stage of fibrosis (r = 0.8156, p <0.0001). In univariate analysis, concentrations of both choline-containing compounds and glutamine-glutamate complex had a direct correlation with histologic grade (p <0.0001) and degree of steatosis (p <0.0001) but not with stage of fibrosis (p > 0.05). In multivariate analysis, the only factor independently associated with concentrations of choline-containing compounds and glutamine-glutamate complex was histologic grade. In cross-validated discriminant analysis based on choline-containing compound, glutamine-glutamate complex, and lipid resonance, 70% (21 of 30) of the histologic grade groups and 73% (22 of 30) of the steatosis groups were correctly classified. CONCLUSION. Hydrogen-1 MR spectroscopy can be an alternative to liver biopsy in the evaluation of steatosis and necroinflammatory activity in liver disease but is not useful for complete evaluation of hepatic fibrosis.

Original languageEnglish
Pages (from-to)1331-1339
Number of pages9
JournalAmerican Journal of Roentgenology
Volume190
Issue number5
DOIs
Publication statusPublished - May 2008

Fingerprint

Chronic Hepatitis C
Choline
Glutamine
Glutamic Acid
Magnetic Resonance Spectroscopy
Discriminant Analysis
Lipids
Liver Diseases
Liver
Fibrosis
Biopsy
Hepacivirus
Hydrogen
Hepatocytes
Multivariate Analysis
Prospective Studies

Keywords

  • H-MR spectroscopy
  • Chronic hepatitis
  • Liver fibrosis
  • Liver steatosis

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Orlacchio, A., Bolacchi, F., Cadioli, M., Bergamini, A., Cozzolino, V., Angelico, M., & Simonetti, G. (2008). Evaluation of the severity of chronic hepatitis C with 3-T 1H-MR spectroscopy. American Journal of Roentgenology, 190(5), 1331-1339. https://doi.org/10.2214/AJR.07.2262

Evaluation of the severity of chronic hepatitis C with 3-T 1H-MR spectroscopy. / Orlacchio, Antonio; Bolacchi, Francesca; Cadioli, Marcello; Bergamini, Alberto; Cozzolino, Valeria; Angelico, Mario; Simonetti, Giovanni.

In: American Journal of Roentgenology, Vol. 190, No. 5, 05.2008, p. 1331-1339.

Research output: Contribution to journalArticle

Orlacchio, A, Bolacchi, F, Cadioli, M, Bergamini, A, Cozzolino, V, Angelico, M & Simonetti, G 2008, 'Evaluation of the severity of chronic hepatitis C with 3-T 1H-MR spectroscopy', American Journal of Roentgenology, vol. 190, no. 5, pp. 1331-1339. https://doi.org/10.2214/AJR.07.2262
Orlacchio, Antonio ; Bolacchi, Francesca ; Cadioli, Marcello ; Bergamini, Alberto ; Cozzolino, Valeria ; Angelico, Mario ; Simonetti, Giovanni. / Evaluation of the severity of chronic hepatitis C with 3-T 1H-MR spectroscopy. In: American Journal of Roentgenology. 2008 ; Vol. 190, No. 5. pp. 1331-1339.
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abstract = "OBJECTIVE. The purpose of this study was to compare the spectral characteristics of lipids, choline-containing com pounds, and glutamine-glutamate complex assessed with 1H-MR spectroscopy with the histologic findings in patients with chronic hepatitis C. SUBJECTS AND METHODS. Nine healthy controls and 30 patients with biopsy-proven hepatitis C virus-related liver disease participated in this prospective study. Degree of fibrosis and histologic activity were scored according to the METAVIR classification. The percentage of involved hepatocytes was used to grade steatosis. Hepatic spectra were obtained with a 3-T spectroscopic system. Tenfold cross-validated stepwise discriminant analysis was performed to classify disease severity on the basis of the spectroscopic findings. RESULTS. There was a strong correlation between 1H-MR spectroscopically measured lipid concentration and the degree of steatosis at histologic examination (r = 0.9236, p <0.0001). This finding enabled clear separation of groups according to degree of histologically determined steatosis. Variation in lipid concentration was consistent with the degree of steatosis (r = 0.7265, p <0.0001) and stage of fibrosis (r = 0.8156, p <0.0001). In univariate analysis, concentrations of both choline-containing compounds and glutamine-glutamate complex had a direct correlation with histologic grade (p <0.0001) and degree of steatosis (p <0.0001) but not with stage of fibrosis (p > 0.05). In multivariate analysis, the only factor independently associated with concentrations of choline-containing compounds and glutamine-glutamate complex was histologic grade. In cross-validated discriminant analysis based on choline-containing compound, glutamine-glutamate complex, and lipid resonance, 70{\%} (21 of 30) of the histologic grade groups and 73{\%} (22 of 30) of the steatosis groups were correctly classified. CONCLUSION. Hydrogen-1 MR spectroscopy can be an alternative to liver biopsy in the evaluation of steatosis and necroinflammatory activity in liver disease but is not useful for complete evaluation of hepatic fibrosis.",
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AU - Angelico, Mario

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AB - OBJECTIVE. The purpose of this study was to compare the spectral characteristics of lipids, choline-containing com pounds, and glutamine-glutamate complex assessed with 1H-MR spectroscopy with the histologic findings in patients with chronic hepatitis C. SUBJECTS AND METHODS. Nine healthy controls and 30 patients with biopsy-proven hepatitis C virus-related liver disease participated in this prospective study. Degree of fibrosis and histologic activity were scored according to the METAVIR classification. The percentage of involved hepatocytes was used to grade steatosis. Hepatic spectra were obtained with a 3-T spectroscopic system. Tenfold cross-validated stepwise discriminant analysis was performed to classify disease severity on the basis of the spectroscopic findings. RESULTS. There was a strong correlation between 1H-MR spectroscopically measured lipid concentration and the degree of steatosis at histologic examination (r = 0.9236, p <0.0001). This finding enabled clear separation of groups according to degree of histologically determined steatosis. Variation in lipid concentration was consistent with the degree of steatosis (r = 0.7265, p <0.0001) and stage of fibrosis (r = 0.8156, p <0.0001). In univariate analysis, concentrations of both choline-containing compounds and glutamine-glutamate complex had a direct correlation with histologic grade (p <0.0001) and degree of steatosis (p <0.0001) but not with stage of fibrosis (p > 0.05). In multivariate analysis, the only factor independently associated with concentrations of choline-containing compounds and glutamine-glutamate complex was histologic grade. In cross-validated discriminant analysis based on choline-containing compound, glutamine-glutamate complex, and lipid resonance, 70% (21 of 30) of the histologic grade groups and 73% (22 of 30) of the steatosis groups were correctly classified. CONCLUSION. Hydrogen-1 MR spectroscopy can be an alternative to liver biopsy in the evaluation of steatosis and necroinflammatory activity in liver disease but is not useful for complete evaluation of hepatic fibrosis.

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KW - Chronic hepatitis

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