Percentage of T/N ratio more than 2.0 in gliomas
| Variable | Grade II (37), n (%) | Grade III (37), n (%) | Grade IV (21), n (%) | Overall (95), n (%)* |
|---|---|---|---|---|
| MET | 28 (75.7) | 34 (91.9) | 21 (100.0) | 83 (87.4) |
| FDG | 1 (2.7) | 6 (16.2) | 6 (28.6) | 13 (13.7) |
| CHO | 18 (48.6) | 29 (78.4) | 21 (100.0) | 68 (71.6) |
Note:—T/N ratio indicates tumor/normal brain uptake ratio; MET, 11C-methionine; FDG, [18F] fluorodeoxyglucose; CHO, 11C-choline.
* There were significant differences in the percentage of T/N ratio more than 2.0 among 3 tracers by using X2 test with Bonferroni correction. (MET/FDG and CHO/FDG: P < .001; MET/CHO: P < .01).