Freehand SPECT in the OR and scan area (green) and protocol. (A) Freehand SPECT device in the operating room. The device is placed next to the operating table with its stereostatic monitoring means (infrared cameras) looking at the operating field (red arrow). A touch screen enables user interaction and visualization of the reconstructed images (yellow arrow). (B) Scan area (in green) for a side of the neck including also the clavicular region. Scan protocol consists of painting this area with the gamma probe from the two different directions (red arrow) shown in the figure.