CT Head Interpretation

Basic anatomy

A huge number of anatomical structures can be identified on the CT head.

• Motor anatomy
• Ventricular anatomy

Motor anatomy

Identify the motor strip on the CT head shown below.

The motor strip (located in the post-central gyrus) can be identified by the presence of the omega sign which is best visualised on the left hemisphere in the image above. The 'knob' of the omega is the area of cortex that controls hand movement.