COMPARISON STUDY OF DIAGNOSIS OF LIPID RICH ADRENAL ADENOMA WITH CHEMICAL SHIFT MRI AND UNENHANCED CT SCAN

Objective: To assess whether by MRI adenomas can be visualized when CT findings are ambiguous and to assess adrenal adenoma in patients with both MRI chemical shift and unenhanced CT. Study Design: A Retrospective study Place and Duration: The study was performed in the Radiology Department of KRL Hospital Islamabad for the period of 2 Years from March 2015 to March 2017. Materials and Method: 40 patients (42 suprarenal masses) underwent MRI with chemical shift and unenhanced CT were studied retrospectively. For each adrenal mass, adrenal-spleen chemical shift rate, Houns site units and indexed signal intensity were recorded. Qualitative assessment for signal loss in every adrenal mass in the reciprocal phase by the two-passer images was also performed and differentiated with quantitative analyzes. a measure of adenoid-rich lipid, adrenal spleen has a rate of chemical shift lower than 0.71 d, has a rate of signal intensity higher than 16.5%, and if the mass exceeds 10 h, or if the mass satisfies two of the above criteria and there are subsequent images without alteration. Results: Sensitivity and adrenal-to-spleen contrast indicate the Cicadas to identify a lipid-rich adenoma using 92% (33/36) and 17% chemical shift qualitative index signal strength decline and analysis without CT (1/6), 100% (36/36) and (6/6), 100 (36/36) and 67% (4/6) and 78% (28/36) and 83%, 100% respectively (5/6). In lipids Twentyeight (67%) are measured in rich adenomas, or below 10H, a ratio of the chemical lobe of lower than 0.72 adrenal spleen, and strength of signal index of more than 17.0%. 8 masses (19%) were not more than 10H but the adrenal spleen was less than 0.71% of the chemical and a ratio of 16.5% to an index at higher density and the tracking signal was unaltered. Conclusion: Eight of 13 suprarenal adenomas (62%), which were measured more than 10 hours in CT scan unenhanced, were definitively characterized by MRI and chemical shift. Key Words: Adenoma, MRI, CT Scan, Chemical shift, Suprarenal masses.