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• Nuclear Medicine • Radiation Oncology • Emergency Preparedness |
• PET Imaging • Nuclear Cardiology • Medical Physics |
| Home | Products | JRT Calibrations | Refurbished Equipment | Contact JRT |
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• Nuclear Medicine • Radiation Oncology • Emergency Preparedness |
• PET Imaging • Nuclear Cardiology • Medical Physics |
| Home | Products | JRT Calibrations | Refurbished Equipment | Contact JRT |
Acrylic Phantom Material |
For current pricing call JRT Associates at 800-221-0111 |
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| Product pricing and specifications published on this Web site are subject to change without notice. For complete up-to-date information, call JRT Associates. |
©JRT Associates 2008 |
Acrylic Phantom Material is a clear plastic with the chemical formula (C5H8O2)n , polymethylmethacrylate (PMMA). It is also known under the trade names Lucite, Plexiglas and Perspex. Acrylic has a density of 1.185 g/cm3. It is available in 25 x 25 cm sections of varying thickness. A typical acrylic phantom is a 25 cm cube consisting of one of each fractional thickness, eight 1 in thick sections and one 1 in thick section which has an ion chamber cavity drilled at 1 cm from the nearest surface. This allows the calibration depth to be adjusted in 0.8 mm (1/32 in) increments over 1 cm for photon beams. A section for a plane parallel chamber is machined to position the chamber flush with one surface. In this manner, depths can be achieved for calibrating electron beams in 0.8 mm (1/32 in) steps. Economy is achieved by using standard thickness material in English System dimensions. Although the thickness tolerance can vary ±5%, the thickness of each section is individually measured and marked with permanent ink in metric units. Separate sections are available for adding to an existing phantom or to assemble a phantom with custom dimensions. |
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