Specific Anatomic Region	Ankle
Application	Evaluate suspected fracture
Author	Fishman EK
Reference Source	Spiral Evaluation of the Musculoskeletal System (in: Spiral CT: Principles, Techniques and Clinical Applications. Fishman, Jeffrey, eds. 1998)
Scanner Used	Siemens Somatom Plus 4
Injection Rate	N/A
Contrast Volume and Type	N/A
Area Scanned	Several cm above the talotibial joint through the midfoot
Scan Delay	None
Length of Spiral (time)	30-40sec
Slice Thickness	3mm
Table Speed/Pitch	Usually 3mm/sec or a pitch of 1
Reconstruction Interval	1 or 3mm
3D Technique Used	Volume rendering and MPR
Comment: This technique relies on a single CT acquisition in a plane parallel to the foot with MPR and 3D reconstructions done to provide all views. Another school of thought is to get a second set of images in a direct coronal plane with the foot flat. This is ideal in cases where calcaneal pathology is extensive.