FIGURE 3.

(A and B) Schematics of a piecewise linear ascending and descending APD gradient that were used for the derivation of Eqs. 9 and 10. (C) w versus θ₀ when θ_c = 0.2 ms/mm (solid line) and w versus θ_c when θ₀ = 0.5 ms/mm (dashed line) for the ascending case obtained using Eq. 9. τ = 10 ms, σ = 5 ms/mm, and h = 10 mm were used. (D) w versus σ for the ascending (Eq. 9, solid line) and descending (Eq. 10, dashed line) cases. τ = 10 ms, θ₀ = 0.5 mm/ms, θ_c = 0.2 mm/ms, and h = 10 mm were used.