Fig 4. Anteroposterior 3D DSA (300 mg I/mL) obtained with the FPD system (A) and with the I.I.-TV system (B) show many aneurysms. For depiction of aneurysms such as the aneurysm neck and the shape of the aneurysm, the 3D DSA with FPD system is superior to that with the I.I.-TV system.