Circle of Willis

0.5mmx4, Pitch 3.6, 52.2mm, 14.5 seconds, 150mAs

3D Volume rendering

Circle of Willis and it's branches were well visualized.

Note that there was very few "pseudo holes" in frontal skull base since partial volume effect due to slice thickness was completely eliminated by the use of 0.5 mm slice.

Data acquired & processed by M. Nakane M.D.