This SPECT dedicated phantom can be used to produce images similar to those obtained in a whole body tomographic imaging study, with hot and cold lesions and a large cold region representing the lung. The phantom can be used for measure contrast of hot and cold spheres, variability of the (constant) background regions and overall reconstruction accuracy. It has been designed in accordance with the recommendations by the International Electrotechnical Commission (IEC) and modified by the National Electrical Manufacturers Association (NEMA).