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Transverse relaxation‐based assessment of mammographic density and breast tissue composition by single‐sided portable NMR

Elevated mammographic density (MD) is an independent risk factor for breast cancer (BC) as well as a source of masking in X‐ray mammography. High‐frequency longitudinal monitoring of MD could also be beneficial in hormonal BC prevention, where early MD changes herald the treatment’s success. We present a novel approach to quantification of MD in breast tissue using single‐sided portable NMR. Its development was motivated by the low cost of portable‐NMR instrumentation, the suitability for measurements in vivo, and the absence of ionizing radiation.