Author: Scoffings Daniel

Daniel Scoffings • Cambridge University Hospitals NHS Foundation Trust

CT Head – What Slice Thickness Do You Use?

Until recently we have been scanning routine CT heads using a sequential technique with 5 mm slices through the posterior fossa and 10 mm slices of the supratentorial compartment. With a change of machines the protocols were revamped and we are now using sequential 5 mm thick slices all the way through.

One of my colleagues has complained about this change, stating that lesion conspicuity will be reduced by using thinner slices above the tent. I personally prefer the uniform and thinner slice thickness but cannot find anything in the literature to support either argument – there is lots about acquiring as thinly as possible in the posterior fossa but nothing regarding the optimum slice thickness for the cerebral hemispheres.

Can anybody help?…