Table 1: Measured (average/standard deviation) attenuation values in HU of key phantom components vs. an actual patient with same ROI (100 mm2).

SEBELEAE (wall)Acrylic

phantom9.8/11.01111.1/130.9−664.6/84.8−122.9/7.3121.2/9.5
actual45.6/7.9346.9/73.5−652.8/78.962/80NA