Ratched Filter Restoration Of Coded-Gamma And X-Ray Imagery

Jack D. Gaskill; Frank R. Whitehead; Joel E. Gray; Robert E. O'Mara

doi:10.1117/12.953677

1 June 1972 Ratched Filter Restoration Of Coded-Gamma And X-Ray Imagery

Jack D. Gaskill, Frank R. Whitehead, Joel E. Gray, Robert E. O'Mara

Proceedings Volume 0035, Application of Optical Instrumentation in Medicine I; (1972) https://doi.org/10.1117/12.953677
Event: Application of Optical Instrumentation in Medicine, 1972, Chicago, United States

Abstract

Recent work has stimulated considerable interest in using radar pulse compression concepts to improve the quality of medical X-ray and gamma ray photographs. (Refs. 1 and 2) These techniques involve using a coded point spread function to obtain increased resolution and reduced ex posure time. The coded point spread function allows use of a larger aperture in the X-ray camera, but requires a post-detection processing step in order to decode the data and obtain the desired image. The point spread function must be coded in such a anner that its two-dimensional autocorrelation function is very sharply peaked. In the post-detection pro cessing; the coded data are cross-correlated with the chosen point spread function to obtain the desired image.

Citation Download Citation

Jack D. Gaskill, Frank R. Whitehead, Joel E. Gray, and Robert E. O'Mara "Ratched Filter Restoration Of Coded-Gamma And X-Ray Imagery", Proc. SPIE 0035, Application of Optical Instrumentation in Medicine I, (1 June 1972); https://doi.org/10.1117/12.953677

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