MODEL 458 SOLID WATER CALIBRATION CHECK PHANTOM

Calibration Check Phantom Model 458 SOLID WATER®	(not shown)
The Gammex 458 Calibration Check Phantom is an excellent test tool for checking energy output from radiotherapy machines. The phantom contains six cavities with corresponding plugs. The cavities are placed at 1.2, 1.5, 2.0, 2.5, 3.2, and 5.0 cm. This allows for measurements at depth of maximum dose deposition. Gammex also provides a custom adaptor to exactly match the ion chamber you use. Please specify the ion chamber at time of order. The Gammex 458 also comes with four 10x10 cm squares inscribed on the top surface of the phantom. Each square contains a set of crosshairs located directly over the center location where the ion chamber will be placed. This feature makes the Gammex 458 the perfect tool to set your light field and quickly take energy readings.
SPECIFICATIONS Slab size . . . . . . 30x30x6 cm (11.8x11.8x2.4 in) Plugs and ion chamber adaptor size Diameter . . . . . . 16.5 cm (0.650 in) Length. . . . . . . . 117 mm (4.6 in) Weight. . . . . . . . 5.65 kg (12.4 lbs)