The Role of 3 Tesla MRA in the Detection of Intracranial Aneurysms
Figure 1
(a) 3D TOF MRA at 3 T at the level of the circle of Willis performed without MT or FS and without application of parallel imaging (ASSET). The scan time was 4 minutes and 53 seconds. Intraorbital fat signal is not completely compressed and is superimposed on the images, obscuring the visualization of the ophthalmic arteries. (b) 3D TOF MRA at 3 T at the level of the circle of Willis performed without MT but with FS and with the application of parallel imaging (ASSET). The scan time was 2 minutes and 34 seconds. Intraorbital fat signal is completely compressed, and only the arteries are clearly visualized. (c) 3D TOF MRA at 3 T at the level of the circle of Willis performed with MT, with FS, and with the application of parallel imaging (ASSET). The scan time was 2:03 min. The arteries are much clearly identified. All images clearly show the Acom aneurysm, but images with application of FS and MT are much clearer and required the shorter scan time.
