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Spatial resolution measurements for passive microwave radiometry using a tissue‐equivalent phantom
Author(s) -
Behrman Richard H.,
Brodie Marlene A.,
Sternick Edward S.,
Grabowy Richard S.,
Gemmell Lee Ann,
Carr Kenneth L.
Publication year - 1990
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596457
Subject(s) - imaging phantom , radiometry , optics , microwave , image resolution , radiometer , line source , millimeter , antenna (radio) , optical transfer function , physics , materials science , computer science , telecommunications , quantum mechanics
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.