Comparison of Computed Tomographic Hounsfield Numbers with Ultrasonographic Categorization of the Fatty Liver Disease

Abstract

Aims and Objective: The aims of the study were Determination of the range of CTHFN in different categories of FLD by USG and to compare CT Hounsfield Numbers with Ultrasonographic categorization of the FLD. Methods: This was a Cross sectional analytical study conducted in the Department of Radiology, Patna Medical College and Hospital, Patna, Bihar, India for 1 year. Total 180 Patients of FLD age between 18-72 years, who underwent both CT and USG scans of abdomen and with Ultrasonographic diagnosis of diffuse FLD was included in this study. Results: Total 180 patients of FLD were observed. The mean age of population was 51.25±15.32 years and range was 18-72 years. The mean Values of CTHFN of liver was 37.85 ± 13.52 HU and range was -10.65-54.62 HU with significant p value. The frequency of male population was 110(61.11%) and female was 70 (38.89%). The mild, moderate and severe FLD was found in 135(75%), 30(16.67%) and 15(8.33%)patients respectively. The mean values of Liver CTHFN in mild moderate and sever FLD categories by US Gwere 41.74±4.88HU, 23.77±3.89HUand3.05±6.79 HU respectively. These values along with P values and 95% Confidence Interval (CI) were analysed. In multiple comparisons the Least Significant Difference (LSD) of USG categories of FLD with mean Liver CTHFN, p value was significant when mild FLD was compared with moderate and severe FLD, Moderate FLD was compared with mild and severe FLD and severe FLD was compared with mild and moderate FLD. Conclusion: USG is a reliable and sensitive modality for the grading of FLD.

Keywords: Fatty Liver Disease (FLD); Computed Tomography Hounsfield Numbers (CTHFN).