Constant radius single photon emission tomography

A nuclear camera including:

• at least four SPECT radiation detectors rotatably arranged around an imaging region to receive emission radiation, the radiation detectors each disposed an equal distance from an imaging isocenter, the radiation detectors each including a radiation-sensitive surface that responds to the first emission radiation;
• a slat collimator disposed on each radiation detector between the radiation detector and the imaging region to provide planar collimation of incoming first emission radiation;
• and
• a means for spinning the collimator and radiation-sensitive surface of each SPECT radiation detector about a detector axis.

An imaging apparatus comprising:

• a rotatable gantry defining a gantry rotation axis and an imaging isocenter;
• three or more gamma detectors arranged on the rotatable gantry at a fixed radial distance from the imaging isocenter;
• a collimator located on each of said three or more gamma detectors:
• and a means for processing data detected by said three or more gamma detectors to produce an image.

An imaging apparatus comprising:

• at least four SPECT radiation detectors rotatably arranged around an imaging region, each detector disposed an equal distance from an imaging isocenter, wherein each detector includes:
• a slat collimator, wherein at least one of collimator slat spacing and collimator height are selected to provide a predetermined resolution at said fixed distance;
• and
• a detector width selected to provide a predetermined radiation detection sensitivity at said fixed distance.