Radiology technician: "Dr. Alacrity, do you want both pre- and post-contrast on this dog's thorax?"
Alacrity: "Yes, please."
Radiologist: "You don't need post-contrast on the thorax if it's a met check."
Alacrity: "Dr. [oncologist] prefers it - he thinks it improves sensitivity."
Radiologist: "Based on what publication?"
Alacrity: "None that I know of."
Radiologist: "I see."