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Elimination of collimator artifacts in scintillation-camera images.

An experimental arrangement which permitted the parallel multihole collimator of a gamma camera to be set in rotary motion during image formation was fabricated. Various test sources of radioactive 99mTc were imaged with the collimator. With the collimator stationary an image of holes and septa of the collimator was projected into the picture of test sources as imaged by the camera. With the collimator in motion the image of the collimator was eliminated from pictures of test sources. Possible practical use of a moving collimator to eliminate collimator artifacts from gamma-camera images is considered.