ISIS Phantom Cube

Open Section U: Quality Assurance Devices, GARD, ISIS, Couch Cubes(PDF) to view related products. (Opens in a new tab)

ISIS Phantom Cube.

This is a 14 cm cube made of clear acrylic with a 10 cm square scribed on three sides of the cube.  The scribes are 2 mm wide and painted in white.  Four of the six sides of the cube have nine holes per side for use of tungsten pins.  One side has a slot to hold the 50 cm ruler.  Crosshair markings are on five sides of the cube.  A 4 cm wide hole is drilled through the middle of the cube to accommodate the inserts.  The cube also has four fixed density inserts.  The density inserts are 2.5 cm in diameter x 1.5 cm thick and correspond in density to water, bone, lung inhale and lung exhale.  The inserts are labeled with the material and density.

Lung Inhale
Physical Density:  0.20
Electron Density Per cc x 10²³:  0.634
Electron Density Relative to H₂O:  0.190

Lung Exhale
Physical Density:  0.50
Electron Density Per cc x 10²³:  1.632
Electron Density Relative to H₂O:  0.489

Dense Bone 800 mg/cc
Physical Density:  1.53
Electron Density Per cc x 10²³:  4.862
Electron Density Relative to H₂O:  1.456

Water
Physical Density:  1.01
Electron Density Per cc x 10²³:  3.346
Electron Density Relative to H₂O:  1.002