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Applied Optics

Applied Optics


  • Vol. 23, Iss. 16 — Aug. 15, 1984
  • pp: 2678–2685

Experimental optical fan beam tomography

Keith E. Bennett, Gregory W. Faris, and Robert L. Byer  »View Author Affiliations

Applied Optics, Vol. 23, Issue 16, pp. 2678-2685 (1984)

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Optical tomography is used to map the iodine vapor density in a plane. Two-dimensional images are obtained with 1-cm spatial resolution using a fan beam geometry with a 28-cm radius fan source circle. The images are reconstructed using the convolution backprojection algorithm with data collected in 0.1 sec from 90 detectors on a full circle using 90–360 fan source positions. Experimental results quantitatively confirm a theoretical analysis of the noise in the reconstructed image, including the effects of correlated noise, position within the image, and spatial resolution. The noise amplitude–absorption length product for a 2-cm pixel size is 6 × 10−4 which is equivalent to an iodine concentration of 6 ppm.

© 1984 Optical Society of America

Original Manuscript: November 5, 1983
Published: August 15, 1984

Keith E. Bennett, Gregory W. Faris, and Robert L. Byer, "Experimental optical fan beam tomography," Appl. Opt. 23, 2678-2685 (1984)

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