EFFECT OF SPATIAL DISTORTION ON ANGER CAMERA FIELD-UNIFORMITY CORRECTION - CONCISE COMMUNICATION

  • 1 January 1979
    • journal article
    • research article
    • Vol. 20  (3) , 252-254
Abstract
The field uniformity of a computer-assisted Anger-camera system and the effect of field correction on quantitative data were studied. The total counts of a source imaged across the crystal face varies with a SD of only 2.0%, but routine flood-field correction degrades the data to a SD of 9.4%. The area of a source 1.75 in. in diameter, imaged across the crystal face, varies with a SD of 9.7%. Apparently the major source of field nonuniformity for an Anger camera is spatial distortion and not varying sensitivity across the crystal face.

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