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Spatial resolution measurements for passive microwave radiometry using a tissue-equivalent phantom
R H Behrman1, M A Brodie, E S Sternick
1Medical Physics Division, Tufts-New England Medical Center, Boston, Massachusetts 02111.
Medical Physics
|November 1, 1990
Abstract:
A tissue-equivalent "hot" line source phantom is described for assessing spatial resolution in passive microwave radiometry systems. LSFs were measured for two rectangular waveguide antennas connected to a 4.7-GHz radiometer. The normalized LSFs and corresponding modulation transfer functions were found to be independent of line source temperature, but dependent upon antenna size, orientation, and line source depth.