Turkish journal of medical sciences · 2015
Efficacy of diffusion-weighted magnetic resonance imaging in the evaluation of extrahepatic cholestasis-related hepatic fibrosis.
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Ayvaz Süleyman, Tuncel Sedat Alpaslan, Can Güray, Çağli Bekir, Karaca Turan, Demirtaş Selim, Elmaoğlu Muhammed, Ünlü Mehmet Ercüment, Pul Mehmet
Аннотация
BACKGROUND/AIM: To investigate the efficacy of diffusion-weighted magnetic resonance imaging (DWI) in the diagnosis and staging of fibrosis induced by experimental bile duct ligation (BDL).
MATERIALS AND METHODS: Twenty-four rats were divided randomly into four groups: control, BDL--3 days, BDL--2 weeks, and BDL--4 weeks. DWI was performed with b-values of 100 and 500 on the rats from control group at day zero, on the rats from the BDL--3 days group at the end of day 3, on the rats from the BDL--2 weeks group at the end of day 14, and on the rats from the BDL--4 weeks at the end of day 28.
RESULTS: When fibrosis scores generated in all groups were evaluated together, a strong negative correlation was detected between fibrosis scores and apparent diffusion coefficient (ADC) values measured using b 100 and b 500. ADC values obtained using b 100 were found to be significantly higher compared to the fibrosis observed in both the BDL--2 weeks and BDL--4 weeks groups (P < 0.003 and P < 0.001, respectively).
CONCLUSION: We think that DWI may be an alternative to liver biopsy for the diagnosis and staging of hepatic fibrosis with underlying extrahepatic cholestasis.
MATERIALS AND METHODS: Twenty-four rats were divided randomly into four groups: control, BDL--3 days, BDL--2 weeks, and BDL--4 weeks. DWI was performed with b-values of 100 and 500 on the rats from control group at day zero, on the rats from the BDL--3 days group at the end of day 3, on the rats from the BDL--2 weeks group at the end of day 14, and on the rats from the BDL--4 weeks at the end of day 28.
RESULTS: When fibrosis scores generated in all groups were evaluated together, a strong negative correlation was detected between fibrosis scores and apparent diffusion coefficient (ADC) values measured using b 100 and b 500. ADC values obtained using b 100 were found to be significantly higher compared to the fibrosis observed in both the BDL--2 weeks and BDL--4 weeks groups (P < 0.003 and P < 0.001, respectively).
CONCLUSION: We think that DWI may be an alternative to liver biopsy for the diagnosis and staging of hepatic fibrosis with underlying extrahepatic cholestasis.