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Proceedings Paper

Deconvolution Techniques For Digital Longitudinal Tomography
Author(s): Donald F Specht; J R Roehrig
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Paper Abstract

In the previous paper we presented clinical results from a digital tomosynthesis x-ray machine which can produce a tomographic slice through the human body in a plane parallel to the sensitive surface of the image intensifier. It stores as raw data separate 512 by 512 pixel images taken from 28 discrete angles. For very large image matrices and faster acquisition times it becomes necessary to acquire images continuously as the x-ray source is moved. This results in images which are convolved with a replica of the source motion, and so deconvolution techniques are required to access the underlying image information. This paper discusses how this can be achieved and describes the results of our first steps towards this goal. It is shown that, although the deconvolution problem is three-dimensional, it can be reduced to an independent two-dimensional computation for each tomographic level of interest. It is also suggested that similar techniques could be used to reduce clutter from unwanted planes after synthesizing images from multiple discrete angles.

Paper Details

Date Published: 15 June 1984
PDF: 7 pages
Proc. SPIE 0454, Application of Optical Instrumentation in Medicine XII, (15 June 1984); doi: 10.1117/12.939348
Show Author Affiliations
Donald F Specht, Xonics Imaging, Inc. (United States)
J R Roehrig, Xonics Imaging, Inc. (United States)

Published in SPIE Proceedings Vol. 0454:
Application of Optical Instrumentation in Medicine XII
Samuel J. Dwyer III; Roger H. Schneider, Editor(s)

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