CT Abdomen/Pelvis

Indications

• Abdominal pain
• Suspected appendicitis or diverticulitis
• Oncology staging or follow-up
• Evaluation of infection, abscess, or fluid collections

Patient Preparation

• NPO 2–4 hours prior to exam if possible.
• Verify renal function and contrast allergy status per site policy.
• Confirm pregnancy status when applicable.

IV Contrast

• Contrast type: nonionic iodinated contrast per site formulary.
• Typical dose: weight-based per institutional guideline.
• Injection rate: standard abdominal rate per injector protocol.
• Phase: portal venous phase timing per scanner timing preset.

Oral Contrast

Use oral contrast per site preference and indication. Follow local timing and volume instructions.

Scanner and Technique

• Coverage: dome of diaphragm through symphysis pubis.
• Slice thickness: standard diagnostic thickness with thin reconstructions for reformats.
• Reformats: axial, coronal, and sagittal planes as per routine body CT protocol.

Notes

• For renal stone or trauma indications, use dedicated stone or trauma protocol as appropriate.
• Document any protocol deviations in the exam notes.