Spiral CT of musculoskeletal pathology: preliminary observations

Spiral or helical computed tomography (CT) allows the rapid acquisition of volumes of CT data in a 24- to 32-s time frame. Rapid data acquisition is accompanied by the ability to reconstruct the images at any pre-determined interval (1-10 mm). This technique is optimal for studies requiring iodinated vascular contrast because it allows data acquisition during the peak contrast levels, optimizing lesion detection. The technique is also excellent for studies that need two- and/or three-dimensional reconstruction as it decreases the chance of interscan motion. Spiral CT has significant potential for a wide range of musculoskeletal imaging applications including in musculoskeletal infection, soft tissue tumors, trauma, and in the oncologic patient.