COMPARATIVE STUDY OF MULTIDETECTOR COMPUTED TOMOGRAPHY (MDCT) WITH ULTRASONOGRAPHY IN ACCURATE DIAGNOSIS OF URETERIC CALCULUS SIZE.

Abstract

Background The trend of imaging modalities used in the evaluation of urinary system stones had been changed recently due to the developments in computed tomography (CT) technology. The present study was Objective undertaken to nd the accuracy of multi-detector computerized tomography in comparison with ultrasonography for an accurate diagnosis of ureteric calculus size. Methodology Single centre hospital-based comparative cross-sectional study was conducted at Department of Radio-diagnosis, Sri Venkateshwara Medical College Hospital, and Research Centre, a tertiary care teaching hospital located in Ariyur, Puducherry. A total of 118 patients from February 2021 to September 2022 underwent unenhanced multidetector CT and ultrasound for the diagnosis of ureteric calculus size. The mean age was 38.8 ± 14.8 years and 74.5% were males and female to Results male ratio was 1.0:2.9. On CT scans stones were found in the vesicoureteric junction among 12.7% of patients. Ureteric calculi in the upper ureter, mid ureter, and lower ureter were found in 9%, 7%, and 32.2% of patients respectively. Other CT scan ndings included hydronephrosis in 6% of patients, hydroureteronephrosis in 60%, and perinephric fat stranding in 3.4% of patients. In ultrasound, 6% of patients had hydronephrosis and 60% of patients had hydroureteronephrosis. Among the 79 cases with ureteric calculi in CT, 35 cases were found on ultrasound. The sensitivity of diagnosing ureteric calculi using ultrasound is compared with CT and was found to be 44.30% with 100% specicity and 100% PPV, and 46.99% NPV This study concludes that Conclusion multidetector computerized tomography (MDCT) is more accurate when compared to Ultrasonography in the case of ureteric calculus. However, in positive cases of ureteric calculus in ultrasonography, there is no signicant difference in size noted in comparison with computed tomography.