From: Assessing particle and fiber toxicology in the respiratory system: the stereology toolbox
Parameter in 3D | Parameter 2D in section | Test probe | Counting event | Density | Final measurements |
---|---|---|---|---|---|
Volume | Area | Test point | Point (P) in test volume | VV = ∑P / total number of test points | Vtot = VV x V(ref) |
Surface area | Boundary line | Test line | Line intersection (I) with surface area | SV = 2x∑I / total length of test lines | Stot = SV x V(ref) |
Length | Transect | Test plane | Transect (Q) with test plane | LV = 2x∑Q / total area of test planes | Ltot = LV x V(ref) |
Number | - | Disector | Particle event (Q−) in test volume | NV = ∑Q− / total disector volume | Ntot = NV x V(ref) |