Table 3. The Diagnostic Performance and Diagnostic Confidence of the LDCT-IR and SDCT in Patients with Symptomatic Ureteral Stone according to the Clinical Follow-Up and Management.
| Diagnostic performance | LDCT-IR (n=33) | SDCT (n=48) | p value |
|---|---|---|---|
| True positive | 29 | 45 | |
| False positive | 0 | 0 | |
| True negative | 2 | 2 | |
| False negative | 2 | 1 | |
| Sensitivity (%) | 93.94 | 97.92 | 0.286 |
| Specificity (%) | 100 | 100 | |
| Accuracy (%) | 96.97 | 98.96 | 0.392 |
| Treatment methods, n (%) | 0.576 | ||
| No treatment | 2 (6.1) | 2 (4.2) | |
| Observation or MET | 25 (75.7) | 32 (66.6) | |
| ESWL | 3 (9.1) | 6 (12.5) | |
| Surgery | 3 (9.1) | 8 (16.7) |
LDCT-IR, low-dose unenhanced computed tomography with iterative reconstruction technique; SDCT, standard-dose unenhanced computed tomography; MET, medical expulsion therapy; ESWL, extracorporeal shock wave lithotripsy.