Abstract
Breast microwave sensing (BMS) is a potential method for breast cancer detection. While radar-based imaging methods have been applied in patient studies, the evaluation of radar-based imaging methods has been limited. Image quality metrics, which aim to quantitatively describe the quality of an image, have been generally limited to descriptors of image contrast. Contrast is only one aspect of image quality - the traditional image quality aspects of image resolution, noise, contrast resolution, accuracy, and artifacts have not been fully addressed in the BMS literature. This work describes methodologies and quantitative metrics for evaluating spatial resolution in BMS. These methods have been applied to evaluate the quality of images produced by the delay-and-sum (DAS), delay-multiply-and-sum (DMAS), and optimization-based radar reconstruction (ORR) methods. The spatial resolution of images produced by the DAS and DMAS beamformers was found to be (1.95 ± 0.15) cm and by the ORR algorithm to be (1.65 ± 0.15) cm.
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