Tumor location, surgical approach, and critical vessels evaluated in 22 tumors
| Patient No. | Location and Side | Surgical Approach | Vessels Evaluated* | Arterial Segments Evaluated |
|---|---|---|---|---|
| 1 | Temporal, L | Pterional | Cortical veins | MCA (2–4) |
| 2 | Temporal, R | Temporal craniotomy | Cortical veins | None |
| 3 | Tectal | Stereotactic biopsy | Cortical veins, ISS, deep venous system | PCA, SCA |
| 4 | Temporal, L | Stereotactic biopsy | Cortical veins | MCA (2–4), AchA, Pch |
| 5 | Parietal, L | Stereotactic biopsy | Cortical veins, deep venous system | None |
| 6 | High parietal, L | Parietal craniotomy | None | |
| 7 | Cerebellopontine, L | Transpetrosal | Cortical veins, sigmoid sinus, SPS | PCA, Pcom, SCA, AICA, PICA |
| 8 | Frontal, L | Frontal craniotomy | Cortical veins, ISS, IV, deep venous system | ACA (2–4) |
| 9 | Parietal, R | Posterior frontal craniotomy | Cortical veins | MCA (2–4) |
| 10 | Frontal, R | Frontal craniotomy | Cortical veins, SSS | None |
| 11 | Frontal, R | Frontal craniotomy | Cortical veins, IV | ACA (2–4), MCA (2–4) |
| 12 | Insula, L | Posterior frontal craniotomy | Cortical veins | MCA (4) |
| 13 | Frontal, R | Frontal craniotomy | Cortical veins | ACA (2–4) |
| 14 | High parietal, L | Frontal craniotomy | Cortical veins | MCA (4) |
| 15 | Parasagittal, L | Frontal craniotomy | Cortical veins, SSS, IV | None |
| 16 | Parietal, L | Parietal craniotomy | Cortical veins, IV | None |
| 17 | High parietal, L | Stereotactic biopsy | Cortical veins, ISS, IV | ACA (2–4) |
| 18 | High occipital, L | Superior parietal lobule | Cortical veins, SSV, IV | ACA (2–4) |
| 19 | Parietotemporal, L | Posterior temporal craniotomy | Cortical veins | None |
| 20 | Thalamic, L | Transcortical | Cortical veins, deep venous system | AchA, PchA, thalamoperforators |
| 21 | Frontal, L | Frontal craniotomy | Cortical veins, IV | ACA (3–4) |
| 22 | Occipital, L | Occipital craniotomy | Cortical veins, SSS, IV | None |
* ISS indicates inferior sagittal sinus; SPS, superior petrosal sinus; IV, interhemispheric veins; and SSS, superior sagittal sinus.
† ACA indicates anterior cerebral artery; Acha, anterior choroidal artery; AICA, anterior inferior cerebellar artery; MCA, middle cerebral artery; PCA, posterior cerebral artery; Pcha, posterior choroidal artery; Pcom, posterior communicating artery; PICA, posterior inferior cerebellar artery; and SCA, superior cerebellar artery.