a phantom , consisting of human lumbar vertebrae embedded in acrylic , and five clear acrylic plates to simulate a soft-tissue thickness range of 15.2-27.9 cm , was measured on a lunar radiation corp dp3 scanner over the life of a 153-gadolinium ( gd ) source and scans analyzed with software versions 08b and 08c .
C0086418
human
C1312248
27.9