Reply to: “Letter: Two cases of persistent falcine and occipital sinuses”

Differences in the identification rate of inferior sagittal sinus among imaging modalities

“…Recently, differences in the identification rate among imaging modalities have become an issue for the occipital sinuses. The identification rate of the occipital sinus has been reported to be 93.4% in adult cadavers, 8.6% in CT digital subtraction venography, and 10% in magnetic resonance venography [3,4]. Although the exact reason for the difference in the identification rate among cadavers and imaging modalities may be unknown, it would be important for neurosurgeons and radiologists to know the identification rate of venous sinuses in imaging modalities, including DSA and 3D CE-T1WI.…”