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American Journal of Roentgenology, Vol 95, 981-991, Copyright © 1965 by American Roentgen Ray Society

LINEAR LAMINAGRAPHY

A SIMPLE GEOMETRIC INTERPRETATION OF ITS CLINICAL LIMITATIONS

J. T. LITTLETON M.D.1 and F. S. WINTER M.D.1

1 From the Department of Radiology, Guthrie Clinic LTD., Robert Packer Hospital, Sayre, Pennsylvania

An examination of the blurring characteristics of linear laminagraphic systems indicates that this is an incomplete form of body-section roentgenography. Because of its orientation dependence, it actually records images from various levels. Therefore, it is an incomplete form of laminagraphy and does not satisfy the accepted definition of body-section roentgenography, namely, "a special technique to show in detail images of structures lying at a predetermined plane of tissue, while blurring or eliminating detail in images of structures in other planes."1 To obtain optimal blurring, the obscuring ray should originate from an infinite number of directions so that uniform blurring will result, and a plane of tissue will, indeed, be recorded in the image plane. Thus, a more general application of available pluridirectional obscuring movements may be advantageous.


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Copyright © 1965 by the American Roentgen Ray Society.