On the Stability of Lung Parenchymal Lesions with Applications to Early Pneumothorax Diagnosis

Figure 9

Collagen-elastin dynamics may lead to escapes from stable orbits. (a) The graph shows 𝜆(𝜏) with the additional collagen-elastin dynamics calibrated with 𝐴_𝑐=100,  𝐴_𝑒=50,  𝑘₁=1×10⁷,  𝑘₂=1×10³,  and 𝑛=1. The point of rupture occurs at the final peak of oscillation at 𝜏≈16. (b) The phase plane reflects the transition from stability to instability as the trajectory veers off from stable orbits.

(a)

(b)