How to cite this article: Dova Madhavi. Role of MDCT evaluation in detection and characterisation of hepatic mass lesions. International Journal of Contemporary Medicine Surgery and Radiology. 2020;5(1):A35-A38. INTRODUCTIONFocal liver lesions are best assessed and characterised by multiphasic CT. It is an effective aid in determining the number, location, and nature of such lesions and monitoring their size over period. In patients with cancer, the precise detection of metastatic disease at the time of diagnosis or during treatment remains crucial to organisation of the disease. Multidetector Computed Tomography (MDCT) represents an advance in CT technology that involves the use of a multiple-row detector array instead of the traditional single-row detector array used in spiral CT. This innovation allows scanning four to eight times faster than scanning with spiral CT. 1 A triphasic spiral CT technique images the entire liver in arterial, portal, and equilibrium phases. 2,3 Rapid availability and short scanning time made CT an ideal imaging modality. 4,5 Inclusion of arterial phase imaging along with portal venous imaging improves the lesion detection especially in hyper vascular neoplasms. 6 Most sensitive phase for lesion detection is portal phase whereas additional information on vascularity of the lesion is given by arterial and equilibrium phases. 7 Multiple modalities in radiological imaging along with histopathological characteristics and clinical assessment are used to achieve a correct diagnosis. 7In the available literature there are fewer comprehensive studies about the character of multiphasic MDCT scan in characterising liver lesions under benign or malignant category and were conducted with a very small sample size. With the above background, this study was assumed as an effort to assess the role of MDCT in detection and characterisation of focal liver lesions with a larger sample size and help in deciding further course of management. MATERIAL AND METHODSThis cross-sectional study was conducted in the Department of Radiodiagnosis in Tertiary care institute for a period of 15 months from January 2018 to April 2019 and total of 90 patients were included in the study. Sample size was calculated based on specification and Positive Predictive Value of MDCT 8 using the formula: n = Zα 2 ×P(1-P)/L 2 Sample Size = 2 2 ×0.05×(1-0.05)/ (0.05) 2 = 4×0.05×0.95 0.0025 = 76 Where, Zα=1.96 (95% CI), P=Prevalence=5% (based on Tertiary Care Hospital) and L=Margin of error=5% Loss=10%=8 Then sample size came out to be=84~90 Adult patients of age group 20-60 years with focal hepatic lesions on abdominal imaging (USG), all patients presenting A B S T R A C T Introduction:Multiphasic Computed Tomography (CT) has become the chief imaging modality for recognition and characterisation of focal liver lesions. CT has assumed primary role in evaluating hepatic masses. Study aimed to assess the imaging features of focal hepatic lesions on Multidetector Computed Tomography (MDCT) and its comparative assessment with histopatho...