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Proceedings Paper

Biomagnetic image reconstruction using the method of alternating projections
Author(s): Ceon Ramon; Seho Oh; Michael G. Meyer; Robert Jackson Marks
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Paper Abstract

Reconstruction of current distributions was performed by solving the magnetic inverse problem using the minimum norm techniques. It provides rough images of current distribution with some noise. Improvement of the resolution and removal of noise from the reconstructed images was done by using alternating projections. The procedure assumes that images can be represented by line-like elements and involves finding the line-like elements based on the initial image and projecting back onto the original solution space. Simulation studies were performed on a (lambda) shaped conductor and a shape of the conductors in the form of letters, UWBC. All conductors were of line-like thickness. In all cases the initial reconstruction produced a good representation of the conductors with some noise, and with larger width of conductor. Alternating projection technique was applied and in each case the original shape and the line-like thickness of the conductors was recovered.

Paper Details

Date Published: 1 June 1992
PDF: 9 pages
Proc. SPIE 1652, Medical Imaging VI: Image Processing, (1 June 1992); doi: 10.1117/12.59420
Show Author Affiliations
Ceon Ramon, Univ. of Washington (United States)
Seho Oh, Univ. of Washington (United States)
Michael G. Meyer, Univ. of Washington (United States)
Robert Jackson Marks, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 1652:
Medical Imaging VI: Image Processing
Murray H. Loew, Editor(s)

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