Improved Delay-and-Sum Beamforming Algorithm for Breast Cancer Detection

Figure 8

Curves of energy collection at focal points 𝑃_𝑇, 𝑃₁, and 𝑃₂ (see Figure 6(a)): (a) curve for 𝑃_𝑇 as in standard DAS, (a) curve for 𝑃₁ as in standard DAS, (c) curve for 𝑃₂ as in standard DAS, (d) curve for 𝑃_𝑇 as in improved DAS together with the fitted polynomial, (e) curve for 𝑃₁ in the improved DAS together with the fitted polynomial, (f) curve for 𝑃₂ in the improved DAS together with the fitted polynomial.

(a)

(b)

(c)

(d)

(e)

(f)