Table 3:
Diagnostic accuracy of quadrant localization of parathyroid adenomas in the 31 patients in our study group
| Imaging Modality | LI No. (%) | LS No. (%) | RI No. (%) | RS No. (%) | Total No. (%) | Accuracy (95% CI) |
|---|---|---|---|---|---|---|
| MIBI SPECT | 67.7 (48.6–83.3) | |||||
| LI | 2 (6.5) | 2 (6.5) | 1 (3.2) | 0 (0) | 5 (16.1) | |
| LS | 0 (0) | 9 (29.0) | 0 (0) | 0 (0) | 9 (29.0) | |
| RI | 0 (0) | 0 (0) | 10 (32.3) | 6 (19.4) | 16 (51.6) | |
| RS | 0 (0) | 1 (3.2) | 0 (0) | 0 (0) | 1 (3.2) | |
| 4DCT | 87.1 (70.2–96.4) | |||||
| LI | 2 (6.5) | 1 (3.2) | 1 (3.2) | 0 (0) | 4 (12.9) | |
| LS | 0 (0) | 11 (35.5) | 0 (0) | 0 (0) | 11 (35.5) | |
| RI | 0 (0) | 0 (0) | 10 (32.3) | 2 (6.5) | 12 (38.7) | |
| RS | 0 (0) | 0 (0) | 0 (0) | 4 (12.9) | 4 (12.9) | |
| MIBI SPECT + 4DCT | 93.5 (78.6–99.2) | |||||
| LI | 2 (6.5) | 0 (0) | 1 (3.2) | 0 (0) | 3 (9.7) | |
| LS | 0 (0) | 12 (38.7) | 0 (0) | 0 (0) | 12 (38.7) | |
| RI | 0 (0) | 0 (0) | 10 (32.3) | 1 (3.2) | 11 (35.5) | |
| RS | 0 (0) | 0 (0) | 0 (0) | 5 (16.1) | 5 (16.1) | |
| Total | 2 (6.5) | 12 (38.7) | 11 (35.5) | 6 (19.4) |
Note:—LI indicates left inferior; LS, left superior; RI, right inferior; RS, right superior.