Notes:
ImPACT have developed a phantom for AEC assessment, consisting of an acrylic cone, 300 mm long.
It has an elliptical cross section, in the ratio of 3:2, which is approximately correct for an abdomen.
It is designed to attach to the carrying case of a Catphan phantom, and is suspended in air.
It was developed from a similar design of phantom from the National Cancer Centre in Tokyo.