Table 1.
Characteristics of the patients.
| Characteristics of the patients | Number | Mean (SD) % | |
|---|---|---|---|
| All patients | 82 | ||
| 3.0 T magnet | 60 | 73.17% | |
| 1.5T magnet | 22 | 26.83% | |
| Age | 38.11 (8.71) | ||
| Gender | Male | 40 | 48.78% |
| Female | 42 | 51.22% | |
| Handedness | Right | 67 | 81.71% |
| Left | 8 | 9.76% | |
| Ambidextrous | 7 | 8.54% | |
| Tumor side | Right hemisphere | 29 | 35.37% |
| Left hemisphere | 53 | 64.63% | |
| Location | Frontal lobe | 30 | 36.59% |
| Frontoinsular | 7 | 8.54% | |
| Temporal lobe | 10 | 12.2% | |
| Temporoinsular | 6 | 7.32% | |
| Insula | 5 | 6.1% | |
| Frontotemporoinsular | 19 | 23.17% | |
| Parietal | 5 | 6.1% | |
| Histopathologya | Oligoastrocytoma, Grade II | 66 | 80.49% |
| Oligoastrocytoma, Grade III | 2 | 2.44% | |
| Oligodendroglioma, Grade II | 7 | 8.54% | |
| Oligodendroglioma, Grade III | 3 | 3.66% | |
| Diffuse low grade glioma (no available histopathologic precision) | 2 | 2.44% | |
| Ganglioglioma, Grade I | 2 | 2.44% | |
| Mean volumes (mm3) | |||
| MRI-1 | Preoperative tumor | 52.26 (40.23) | |
| MRI-2 | Operative cavity | 38.14 (23.67) | |
| Residual tumor | 13.82 (15.44) | ||
| MRI-3 | Operative cavity | 33.11 (23.36) | |
| Residual tumor | 14.23 (15.92) | ||
| Transient immediate postoperative deficits | Aphasia | 33 | 40.24% |
| Sensorimotor deficit | 11 | 13.41% | |
| Cognitive deficit | 1 | 1.22% | |
| No deficit | 40 | 48.78% | |
a
Histopathology is based on the 2007 WHO Classification of Tumors of the Central Nervous System (Louis et al., 2007). Patients were scanned successively before surgery (MRI-1), immediately after surgery, within 36 h following surgery (MRI-2), and three months after surgery (MRI-3).