Variant 3: Pregnant woman. Right lower quadrant pain, fever, leukocytosis. Suspected appendicitis. Initial imaging.

Procedure Appropriateness Category Relative Radiation Level CT abdomen and pelvis with IV contrast Usually Appropriate ☢☢☢ US abdomen May Be Appropriate O US pelvis May Be Appropriate O MRI abdomen and pelvis without and with IV contrast May Be Appropriate O MRI abdomen and pelvis without IV contrast May Be Appropriate O CT abdomen and pelvis without IV contrast May Be Appropriate ☢☢☢ Radiography abdomen Usually Not Appropriate ☢☢ Fluoroscopy contrast enema Usually Not Appropriate ☢☢☢ CT abdomen and pelvis without and with IV contrast Usually Not Appropriate ☢☢☢☢ WBC scan abdomen and pelvis Usually Not Appropriate ☢☢☢☢