The CIRS Radiosurgery Head Phantom was designed to improve the accuracy of treatment plan verification in radiosurgery. It allows for 3D dose verification in a large cranial volume. The Phantom is manufactured from proprietary epoxy materials and contains brain, bone spinal cord, vertebral disks and soft tissue. Linear attenuations of the tissues are within 1% of actual attenuations from 50 keV to 25 MeV. The standard 6.4 x 6.4 x 6.4 cm film stack contains 13 levels of X-ray or Gafchromic? film to evaluate accuracy of 3D dose distribution. It can be interchanged with an equivalent gel dosimetry cassette or TLD holder. Two brain-equivalent spacers allow the user to locate the cassette in one of four different positions. Features; ? Verification of intracranial dose distribution ? 3D isodose verification ? Commissioning and comparison of treatment planning systems ? Verification of individual patient treatment plan ? Teaching tool for Gamma Knife and Radiosurgery
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