Frequency Domain Breast Lesion Classification Using Ultra-Wideband Lesion Response - Ultra-Wideband and 60 GHz Communications for Biomedical Applications - page 237

Table 1 Nominal values of the model parameters
S ∞ σ (S/m) T p

Normal breast tissue 10 7 0.15 7

Lesion 54 4 0.7 7

Fig. 1 Configuration of
simulation space. The
transmitter is placed at the
center of the array. Receivers
equidistant from the lesion at
regular intervals

terms with different attenuation coefficients and frequencies (poles). As predicted
by GTD, the attenuation coefficient is a function of the shape of the object while
its frequency is determined by the distance between the scatterer and the receiver.
This representation has interesting applications in UWB microwave radars. Fitting an

Fig. 2 a Sample of smooth lesion. b Sample of rough lesion