The Multiple Brain Injury CT Phantom is rectangular in shape with rounded corners to minimize CT artifacts and is large enough to accommodate brain anatomical variations. The linear attenuation of the simulated brain tissue is within 1% of that of real tissue from 50 keV to 15 MeV.
The phantom has two pairs of asymmetrical embedded fiducial markers and a central fiducial marker split in half at the phantom's isocenter to assist you during pre-irradiation imaging. You can also align the image fiducials (from a CBCT, ExacTrac®, or kV images) and compare them to the phantom's reference image to make more precise adjustments of the phantom to the linear accelerator top.
The phantom accepts radiochromatic film at up to 29 locations in 5 mm increments. Preloaded polyester film sheets allow for flexible film placement without affecting the sensitive geometry. External grooves and markings on the sides of the phantom facilitate easy film placement in only the desired locations to cover specific lesions. The film allows for individual review of multiple planning target volumes (PTVs).
