Hi! Lead author here.
We only had a person in front of the X-ray scanner a few times, to minimize exposure. Most of the time we scanned a radiological "phantom", which is designed to look exactly like a human under the X-ray spectrum.
We only had a person in front of the X-ray scanner a few times, to minimize exposure. Most of the time we scanned a radiological "phantom", which is designed to look exactly like a human under the X-ray spectrum.