2-D Phantom

The 2-D Phantom is a clear disk made out of PMMA. It will be filled with a mixture of water and radionuclide (Technetium-99m or Fluorine-18). This mixture will represent the "hot" region of the Phantom when imaged while six acrylic disks of varying diameters will represent the "cold" region. The purpose of the 2-D Phantom is to provide consistent performance information for any SPECT or PET system. 

The dimensions of the Phantom, as specified by the Sponsor, are shown in Figure 1 and were closely adhered to. The Phantom was built out of acrylic.

Following the performance of a drop test on a Phantom that perfectly matched the dimensions above, it was determined that the Phantom would be more robust if the thickness of the cylinder wall were doubled. Figure 2 shows the finalized 2-D Phantom. The updated dimensions can be found under CAD > 2-D Phantom. 

A threaded nylon screw covers a hole at the top of the Phantom that will be used to refill and empty it. Information on the specific nylon screw used can be found here.