A pitfall in detection of intracranial unruptured aneurysms on three-dimensional phase-contrast MR angiography.
We report three cases of intracranial unruptured aneurysm evaluated with MR angiography using both three-dimensional time-of-flight and three-dimensional phase-contrast techniques. It has been said that the phase-contrast technique has advantages over the time-of-flight technique in the detection of intracranial aneurysms. However, in our three cases, three-dimensional time-of-flight MR angiography clearly showed the intracranial unruptured aneurysms, but three-dimensional phase-contrast MR angiography failed to show them.
Department of Radiology, Osaka Rosai Hospital, Japan.
Y
Y
Araki
E
E
Kohmura
I
I
Tsukaguchi
D000328:Adult; D017542:Aneurysm, Ruptured / Q000175:diagnosis / Q000601:surgery; D001783:Blood Flow Velocity / Q000502:physiology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000601:surgery; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests