Figure 10.
DgN(E) coefficient comparisons plotted for cylindrical phantoms as a function of the corresponding realistic breast‐shaped phantom. The radius of the cylinder was either set equal to the radius at the chest wall “RCW” of the breast‐shaped phantoms; or the radius of the cylinder was set equal to the radius of the breast‐shaped phantoms at the center‐of‐mass in the anterior–posterior direction “RCO m”. For all comparisons, the length of the cylindrical phantoms was adjusted to match the volume of the corresponding breast‐shaped phantom. (a) V1 regression fit comparisons with RCOM (y = 1.009x − 0.010) and RCW (y = 0.903x − 0.018). (b) V3 regression fit comparisons with RCOM (y = 1.015x − 0.001) and RCW (y = 0.907x − 0.009). (c) V5 regression fit comparisons with RCOM (y = l.015x − 0.002) and RCW (y = 0.901x − 0.005). All phantoms used for comparison were composed of 17% fibroglandular tissue (excluding skin) and a skin thickness of 1.5 mm. The solid line is the line of identity.