The value of dynamic contrast enhancement MRI in the diagnosis of pituitary micro adenoma
Objective:To evaluate the examinational quality of dynamic contrast enhancement MRI and its effect in diagnosing pituitary microadenoma.Methods:The data of 38 cases with pituitary microadenoma confirmed by clinical manifestation and biochemical tests were studied by plain MRI,Gd-DTPA dynamic enhanced MRI and conventional delayed enhanced MRI.To evaluate the quality of image of Gd-DTPA dynamic enhanced MRI,and statistics the rate of lesion detection of plain MRI,Gd-DTPA dynamic enhanced MRI and conventional delayed enhanced MRI.Results:The positive rate in Gd-DTPA dynamic enhanced MRI was 100%,the positive rate of diagnosis for pituitary micro adenoma with plain MRI scan,dynamic enhanced MRI and conventional delayed enhanced MRI was 42.1%(16/38),89.5%(34/38) and 68.4%(26/38) respectively,and there were statisticaly significances(P0.05)among different scanning methods.Conclusion:Gd-DTPA dynamic enhanced MRI was relatively simple,easy,efficientand obviously improved its detection rate.Dynamic enhanced MRI should be considered as the conventional examinational method in diagnosing pituitary microadenoma.