Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a1) An axial slice of MR image. (a2) A sagittal slice of MR image. (b1) An axial slice of CT image. (b2) A sagittal slice of CT image. The MR and CT images are in the same plane. White lines in (a1) and (a2) indicate the plane of the sagittal and axial slices, respectively.
