Fig 1.
Anterior intercavernous sinus but not inferior intercavernous sinus was found in the cadaver (a) or CE-MRI image (b: sagittal, c: horizontal, d: coronal).
AIS: anterior intercavernous sinus; BA: basilar artery; BS: basilar sinus; CS: cavernous sinus; DSS: dorsum sellae sinus; H: hypophysis; ICA: internal carotid artery; OP: optic nerve; SH: stalk of hypophsis; SP: sphenoid sinus. Direction: A-superior; P-posterior; S-superior; I-inferior.
Fig 2.
Inferior intercavernous sinus but not anterior intercavernous sinus was found in the cadaver (a) or CE-MRI image (b: sagittal, c: horizontal, d: coronal).
BA: basilar artery; BS: basilar sinus; CS: cavernous sinus; DSS: dorsum sellae sinus; H: hypophysis; ICA: internal carotid artery; IIS: inferior intercavernous sinus; OP: optic nerve; SH: stalk of hypophsis; SP: sphenoid sinus. Direction: A-superior; P-posterior; S-superior; I-inferior.
Fig 3.
Both the anterior intercavernous sinus and the inferior intercavernous sinus were found in the cadaver (a) or CE-MRI image (b: sagittal, c: horizontal, d: coronal).
AIS: anterior intercavernous sinus; BA: basilar artery; BS: basilar sinus; CS: cavernous sinus; DSS: dorsum sellae sinus; H: hypophysis; ICA: internal carotid artery; IIS: inferior intercavernous sinus; OP: optic nerve; SH: stalk of hypophsis; SP: sphenoid sinus. Direction: A-superior; P-posterior; S-superior; I-inferior.
Fig 4.
Neither the anterior intercavernous sinus nor the inferior intercavernous sinus were found in the cadaver (a) or CE-MRI image (b: sagittal, c: horizontal, d: coronal).
BA: basilar artery; BS: basilar sinus; CS: cavernous sinus; DSS: dorsum sellae sinus; H: hypophysis; ICA: internal carotid artery; OP: optic nerve; SH: stalk of hypophsis; SP: sphenoid sinus. Direction: A-superior; P-posterior; S-superior; I-inferior.
Table 1.
The rate of intercavernous sinuses in cadaver and CE-MRV.
Fig 5.
Illustration showing the rate of different intercavernous sinuses in cadaver and MRV.
AIS: anterior intercavernous sinus; BS: basilar sinus; DSS: dorsum sellae sinus; H: hypophysis; IIS: inferior intercavernous sinus.
Table 2.
Supraoinferior diameters of the intercavernous sinuses in cadaver and CE-MRV (mm).
Table 3.
Anteroposterior diameters of the intercavernous sinuses in cadaver and CE-MRV (mm).
Fig 6.
Illustration showing the operative space of sphenoid sinus in different types of intercavernous sinus.
AIS: anterior intercavernous sinus; BS: basilar sinus; H: hypophysis; IIS: inferior intercavernous sinus; SH: stalk of hypophysis.