Mini gamma camera, camera system and method of use

A method for determining the existence and defining the position of a lesion of other similar abnormality in the human body comprising the steps of:

• I. exposing an area of the human body suspected of containing the lesion of other abnormality previously injected with a radiotracer to a gamma camera comprising:
• a) a collimator;
• b) a scintillator layer comprising a matrix of parallel scintillator crystals held together by a layer of reflecting material;
• c) a light guide;
• d) an array of position sensitive, high resolution photomultiplier tubes having x and y anode sectors providing an output;
• and
• e) printed circuitry for receipt of the output of the photomultiplier tubes;
• II. digitizing the output of the photomultiplier tubes;
• and
• III. providing a computer including imaging processing software where said image processing software determines the center of gravity calculating of the signals distribution on the x and y anode sectors of the position sensitive, high resolution photomultiplier tubes by truncating from the center of gravity calculation the anode sectors that carry low signals.