Figure 7
From: Concept of a Radiofrequency Device for Osteopenia/Osteoporosis Screening
(a) Transmission coefficient \(|{S}_{21}(f)|\) between the two antennas and through left and right wrists divided by BMI and multiplied by age in the frequency range 0–2 GHz for all subjects from Group 1 (osteopenic/osteoporotic) and Group 2 (healthy). Red color corresponds to Group 1 while blue color corresponds to Group 1. 120 frequency curves in total are shown in the figure. (b) The same as in a) but with the data for five young adults highlighted in magenta. (c) The same as in (a) but with the data for five osteoporotic subjects (T score below – 2.5) highlighted in magenta.
