Behrman R H, Brodie M A, Sternick E S, Grabowy R S, Gemmell L A, Carr K L
Medical Physics Division, Tufts-New England Medical Center, Boston, Massachusetts 02111.
Med Phys. 1990 Nov-Dec;17(6):1064-6. doi: 10.1118/1.596457.
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.
描述了一种用于评估无源微波辐射测量系统空间分辨率的组织等效“热”线源体模。对连接到4.7 GHz辐射计的两个矩形波导天线测量了线扩展函数。发现归一化线扩展函数和相应的调制传递函数与线源温度无关，但取决于天线尺寸、方向和线源深度。
