According to the ACR, CT of the abdomen and pelvis with IV contrast is usually appropriate in patients with RLQ pain, fever, and leukocytosis with suspected appendicitis. The following may be appropriate, depending on other factors:
Ultrasonography of the abdomen
MRI of the abdomen and pelvis without and with IV contrast
Ultrasonography of the pelvis
MRI of the abdomen and pelvis without IV contrast
The following are usually not appropriate in these patients:
CT scan of the abdomen and pelvis without and with IV contrast
Radiography of the abdomen
Fluoroscopy contrast enema
Tc-99m WBC scanning of the abdomen and pelvis
Read more on the imaging studies used to diagnose appendicitis.
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Cite this: Richard H. Sinert. Fast Five Quiz: Appendicitis Diagnosis and Treatment - Medscape - Mar 13, 2019.