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Phantom Benefits • Verify heterogeneity corrections • Correlate CTU to electron density • Check dose distributions in sensitive areas • 2D and 3D isodoses • Verify individual patient treatment plans • Calibrate film with ion chamber
The IMRT phantoms are designed to address the complex issues surrounding commissioning and comparison of treatment planning systems and verification of individual patient plans and delivery.
These IMRT phantoms are manufactured from tissue equivalent materials that mimics water, bone and lung within 1% from 50 KeV to 25 MeV. The elliptical shape minimizes the CT artifacts associated with cubic phantoms and properly represents human anatomy in size and proportion. The uniformity of shape enhances accuracy of the depth measurements. An interchangeable rod design allows the phantom to accommodate a multitude of dose measurement devices such as ion chambers, TLD, diodes and MOSFETs allowing for point dose measurements in multiple planes within the phantom. The phantoms accommodate GafChromic® or standard ready-pack films. (1) Laser alignment markers and special radiopaque fiducials allow for easy CT to film registration.
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