GI Tract Printer-ready protocol

Colon: Virtual colonoscopy

Specific Anatomic Region

Colon

Application

Virtual colonoscopy

Author

Fishman EK et al

Reference Source

Personal communication

Scanner Used

Siemens Somatom Plus-4

Injection Rate

Either none used or 3cc/sec

Contrast Volume and Type

Up to 120cc

Area Scanned

Entire abdomen and pelvis

Scan Delay

25-30sec

Length of Spiral (time)

40sec

Slice Thickness

3-5mm

Table Speed/Pitch

5-8mm/sec

Reconstruction Interval

3mm

3D Technique Used

Volume rendering

Comments:

  • The study is classically done without IV contrast but IV contrast gives a better display for staging.
  • The current thought is to study the patient in both the prone and supine postitions. The key to a good study is patient preparation.

    • 1A 1B Case 1: virtual colonoscopy
    2A 2B Case 2: virtual colonoscopy