I sat at the nurses station and called up the CT scan on a computer. It looked like a stroke, but the dictation wasn't transcribed yet. So I dialed the radiologist covering nights.
Dr. Radar: "This is Dr. Radar."
Dr. Grumpy: "Hi, Mike. Can you look at the scan on Mrs. Platelet? It looks like she has a right frontal stroke."
Dr. Radar: "Hang on... No, that's not a stroke. That's volume averaging artifact."
Dr. Grumpy: "Really? It looks like a stroke."
Dr. Radar: "No, definitely volume averaging."
Dr. Grumpy: "Okay, thanks."
I hung up and was a bit surprised. I began writing a note, when a nurse came over to tell me Dr. Radar had just called back looking for me.
Dr. Grumpy: "This is Dr. Grumpy."
Dr. Radar: "Yeah, it's me again. Did you say right or left?"
Dr. Grumpy: "Right."
Dr. Radar: "Oh, sorry. The left is artifact. On the right, that's a stroke. Big one, too."