Incoherent optical processor for X-ray transaxial tomography

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A single-channel incoherent optical processor that reconstructs an object from its 1-D X-ray projections has been developed. The projection data are recorded directly on X-ray film, which, after development, is used as the input transparency for the processor. The same computing algorithms used by commercial computed tomography units are optically implemented to reconstruct the object from these projections. The totally analog processor employs time-modulated OTF synthesis to achieve the necessary bipolar filtering operations. This technique involves a time-varying pupil plane mask in conjunction with synchronous demodulation of the detector output to obtain the desired response. Results are presented that are similar in quality to reconstructions produced by commercial scanners. The advantage of this system is that it should offer equivalent performance at a reduced cost.

Original languageEnglish (US)
Pages (from-to)264-273
Number of pages10
JournalApplied Optics
Volume20
Issue number2
StatePublished - Jan 1 1981

Fingerprint

X ray films
Demodulation
Transparency
Tomography
central processing units
Masks
tomography
projection
Detectors
X rays
Costs
optical transfer function
x rays
demodulation
pupils
scanners
masks
analogs
costs
output

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Incoherent optical processor for X-ray transaxial tomography. / Greivenkamp, John E; Swindell, W.; Gmitro, Arthur F; Barrett, Harrison H.

In: Applied Optics, Vol. 20, No. 2, 01.01.1981, p. 264-273.

Research output: Contribution to journalArticle

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