A) ATA risk classification.
| Before SPECT/CT | |||||
|---|---|---|---|---|---|
| low | intermediate | high | TOTAL | ||
| After SPECT/CT | Low | 124 | 83 | 5 | 212 |
| Intermediate | 11 | 70 | 7 | 88 | |
| high | 3 | 6 | 14 | 23 | |
| TOTAL | 138 | 159 | 26 | 323 | |
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