Value of TC-99M dmsa scintigraphy in urinary tract infection : compaiative study with other imaging modalities

Abstract EN

Background and purpose; Urinary tract infection (UTI) is a common medical problem.

It causes considerable morbidity specially if complicated, can cause severe renal damage.

The aim of this study is lo evaluate value of Tc-99m DMSA in UTI comparing with ultrasound and CT scan.

Patients and Methods: We analyzed a random sample of 63 patients approved to have urinary tract infection.

Abdominal ultrasound, CT, and (99m) Tc-DMSA scintigraphy of the kidneys were performed in all patients.

Results; rc-99m DMSA scan showed scintigraphic changes consistent with pyelonephritis in all patients.

The involvement was either unilateral in 53 patients (84%) or bilateral in 10 patients (16%).

The number of diseased kidneys were (®'^%), ^“'/73 kidneys had abnormal unifocal defects (22%) , ''’v/vr kidneys had Multifocal defects (37 %), while v./vf kidneys had diffuse hypoactivity (■11%).

I'he sensitivity of CT scan in detecting pyelonephritis was 82.8% while the sensitivity of ultrasound was poor (23.8 %) and there was a statistically significant difference between the sensitivity of ultrasound and that of Tc-99m DMSA.

Conclusion: Tc-99m DMSA is reliable diagnostic, cost-effective, simple, safe and noninvasive modality and may be taken as a routine procedure for the patients with clinical suspicion of upper UTI whenever the facilities are available