Fig. 3.

A 60-year-old man. The axial (a), sagittal (b) and coronal (c) views of 3D-real IR images obtained 4 h after intravenous administration of GBCA. A lower level of the axial image (d) is also shown. Cystic structures (arrows, a–c) are seen adjacent to the cortical vein (dotted arrows, a) and the superior sagittal sinus. A cyst is slightly compressing the adjacent inner table of the skull (arrows, b and c). A nodular structure with high signal intensity (short arrow, a) protruding into the skull was identified as an arachnoid granulation. GBCA leakage along the cortical vein (dotted arrow, d) is visualized (bold arrow, d). Another cyst (arrow, d) is seen near the leakage. GBCA, gadolinium-based contrast agent.