Date of Award

Summer 1991

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)

Department

Biomedical Engineering

First Advisor

Battocletti, Joseph H.

Second Advisor

Sances, Anthony Jr.

Third Advisor

Harris, Gerald F.

Abstract

Research and development have been underway for several years on the measurement of bone mineral content using phosphorus nuclear magnetic resonance spectroscopy (PNMRS). An essential element of a PNMRS is the central portion of the airgap of the permanent magnet which provides a very steady homogeneous magnetic field over the region of sample. Homogeneity improvement is attained primarily by shimming. To predict the shim amount and location for the new magnet in this project, an expert system program using "fuzzy logic" method will be constructed in "C" language. The program uses an old "truthtable", from a previously shimmed magnet, and new measurements as the knowledgebase.

Share

COinS

Restricted Access Item

Having trouble?