Fig 2. Left middle cerebral artery aneurysm 3 mm wide treated by endovascular coiling. Note a residual aneurysm (arrow).

A and B, 3D TOF MRA transverse source image and MIP anterior projection show the clear visualization of the small treated aneurysm and remnant flow.

C and D, CE-MRA source image and MIP anterior projection show that the packing coil is difficult to locate because venous enhancement affects image interpretation.

E, DSA left carotid angiogram, anterior view, shows residual aneurysm.