Lung Cap, Inspir

Used to identify adults at elevated future lung cancer risk to guide LDCT screening decisions and support shared decision‑making. Helps select high‑risk individuals missed by age/pack‑year criteria and avoid screening those at very low risk (supported by NCCN noting calculators may better identify high‑risk candidates 1). Clinical utility: improves risk stratification, screening efficiency, and early‑cancer yield from a single LDCT or clinical inputs.

Indicates ventilatory reserve and dynamic hyperinflation; lower values predict earlier mechanical constraint and poorer exercise capacity. Resting IC strongly correlates with V̇O2peak (r=0.65, p<0.001) in population data 1 [Level II evidence].
Cautions: affected by effort and lung volume measurement variability; not validated for pre‑operative risk stratification; should not replace FEV1, DLCO, or CPET in surgical evaluation per ERS/ESTS guidance 2 [Level I evidence].