Article Figures & Data
Figures
- FIG 1.
Schematic illustration of dural arterial anatomy and anastomoses among the ophthalmic, internal carotid, and external carotid arteries: 1 indicates the ICA; 2, OphA; 3, lacrimal artery; 4, RMA-OC; 5, RMA-MSOF; 6, RMA-LSOF; 7, ILT; 8, MHT; 9, MMA; 10, sphenoid branch of MMA; 11, cavernous branch of MMA; 12, accessory meningeal artery; 13, artery of the foramen rotundum; 14, artery of the SOF; 15, marginal tentorial artery.
- FIG 2.
A, Axial view of the gadolinium-enhanced T1-weighted image shows a medial-type sphenoid ridge meningioma. The lateral view of the 3D-DSA (B) and axial views of slab MIP images (C and D) of the right internal carotid angiogram show the feeder of the RMA passing through lateral part of the SOF (arrow) from the lacrimal artery and ILT (arrowhead). There is an anastomosis between the RMA-LSOF and the ILT. E, Oblique view of the internal carotid angiogram before embolization shows both feeders. Internal carotid angiogram after coil embolization of the ILT (F) and RMA-LSOF (G and H). The tumor stain is markedly diminished.
- FIG 3.
A, The axial view of the gadolinium-enhanced T1-weighted image shows a medial-type sphenoid ridge meningioma. B, Anterior-posterior view of the left external carotid angiogram shows the feeder from the accessory meningeal artery (large gray arrow) and sphenoid branch (large black arrow) of the MMA. The lateral views of the 2D-DSA (C) and 3D-DSA (D) and sagittal views of slab MIP images (E and F) of the left internal carotid angiogram show the feeder of the RMA passing through the OC (arrow) and MHT (arrowhead). The slab MIP images clearly show that the RMA-OC and OphA (dotted arrow) pass through the OC (E and F).
- FIG 4.
A, Sagittal view of the gadolinium-enhanced T1-weighted image shows an olfactory groove meningioma. The lateral views of the 2D-DSA (B) and 3D-DSA (C) and sagittal views of slab MIP images (D–F) of the right internal carotid angiogram show the feeder from the RMA passing through the OC (arrow) from the third segment of the OphA, posterior EtA, (arrowhead), and TOB (dotted arrow). The slab MIP images show the RMA-OC, and the OphA passes through the OC (E). Feeders from the RMA-OC and EtA configure an arcade shape on the blistering of the planum sphenoidale.
Tables
Lesion characteristics and arterial anatomy of meningiomas
Characteristics/Anatomy Total n = 20 Mean age (yr) 56 ± 14 Male sex (%) 9 (45%) Location (%) Sphenoid ridge (lateral type) 4 (20%) Sphenoid ridge (medial type) 9 (45%) Sphenoid ridge (diffuse type) 3 (15%) Olfactory groove 4 (20%) Mean maximum diameter (mm) 43 ± 13 Histopathologic diagnosis (%) Meningothelial meningioma 8 (40%) Transitional meningioma 8 (40%) Other WHO grade I meningioma 3 (15%) WHO grade II meningioma 1 (5%) Feeders from OphA (%) 19 (95%) RMA-OC 7 (35%) RMA-LSOF 13 (65%) RMA-MSOF 2 (10%) EtA 6 (30%) TOB 4 (20%) Feeders from ICA (%) 15 (75%) ILT 13 (65%) MHT 9 (45%) Feeders from ECA (%) 15 (75%) MMA 12 (60%) Accessory meningeal artery 7 (35%) Artery of the foramen rotundum 6 (30%) Artery of the SOF 3 (15%) Anastomosis of each feeder (%) 15 (75%) OphA-OphA 4 (20%) OphA-ICA 5 (25%) OphA-ECA 2 (10%) OphA-ICA-ECA 2 (10%) ICA-ICA 1 (5%) ICA-ECA 1 (5%)
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