COMPARISON OF CT AND MRI DIAGNOSTIC PERFORMANCE IN THE ABDOMINAL STAGING OF RENAL TUMORS IN CHILDREN

Jiangtao Meng, Jian Sun^*

Department of Medical Imaging, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China

Objective: In this study, 100 pediatric renal tumor patients were selected for CT and MRI scans, and the diagnostic performance of CT and MRI in the abdominal staging of renal tumors was compared. 

Methods: CT scanner was used to scan the lesion and its adjacent parts by thin-layer and enhanced scans. At the same time, a superconducting nuclear magnetic resonance scanner was used to carry out plain and enhanced MRI scans of the lesion and adjacent parts. The sensitivity, specificity, positive ratio, and negative ratio of CT and MRI in diagnosing abdominal lesions of renal tumors in children were detected by the test. The ratio was used to analyze the heterogeneity. 

Results: The abdominal staging of renal tumors in children were divided into five. The location of tumors in each stage was quite different. In stage I, the tumor was confined to the kidney; in stage II, the tumor invaded the lateral kidney; in stage III, there were non-hematogenous tumor remnants in the abdomen; in stage IV, the tumor metastasized to the lung, liver, bone, brain, and lymph; in stage V, the tumor further developed into bilateral cystoma; CT and MRI images were statistically significant in the abdominal diagnosis of renal tumors in children. The detection rate of MRI was larger than that of CT (P<0.05); the negative coincidence rate of plain CT scan was larger than the positive one, while that of the enhanced scan was smaller than the positive one. The negative coincidence rate of plain and enhanced MRI scan was smaller than the positive one (P<0.05); there was a statistical difference between CT and MRI in the heterogeneity detection (P<0.05). 

Conclusion: Both CT and MRI diagnoses could be used for performance detection in the abdominal staging of renal tumors in children. The positive rate of the MRI scan was larger than that of the CT scan.