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Carbon-rubber phantoms have recently been introduced as tissue-mimicking materials for microwave biomedical applications. In contrast to other phantom materials, carbon-rubber materials allow easy construction of heterogeneous phantoms with time-stable dielectric properties. However, the fabrication of large solid phantoms may pose a challenge. This paper investigates a large dielectric carbon-rubber...
In this paper, we demonstrate the successful use of a hybrid artifact removal algorithm for microwave breast imaging when applied to a time-domain system. This algorithm, previously applied to VNA-based prototypes, combines two existing algorithms to remove the early time response primarily due to the direct pulse between antennas, and the skin response. We discuss the modifications necessary to this...
Over the last two decades, microwave breast cancer detection has attracted an increasing amount of research attention and various research groups have recently commenced clinical testing. Much of the past assessment of algorithms and hardware has relied on breast phantoms. We illustrate in this paper through experimental data collected with breast phantoms that classification with breast phantoms...
We compare the tumor detection ability of a time-domain microwave radar system for breast cancer screening fed with two different pulses. We conduct measurements on highly realistic breast phantoms using as inputs to our system both a generic pulse and a pulse reshaped with a synthesized broadband reflector (SBR) designed to have a frequency profile advantageous for tumor detection. We perform measurements...
This paper focuses on safety assessment of microwave breast screening systems. Using numerical analysis, a heterogeneous, life-like breast phantom is illuminated by an antenna, currently used in experimental microwave imaging systems, from several locations and at several frequencies. These frequencies correspond to the content of experimental pulses used in microwave detection systems. The computed...
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