Morpho-densitometry of bone using a trigonometric function

When long bone is considered to be a tube-like structure filled up with a homogenous material, single-directional densitometry of it separately shows cortical and medullary bone mass using a trigonometric function at any given section. Both bone masses can be differentiated from each other using the values of peak bone density and central bone density. This densitometry is based on the two-dimensional structure of long bone. This principle can be universally applied to skeletal disorders including osteoporosis, metabolic bone disorders, and bone tumors in which the mineral content is altered. Dynamic changes in calcium metabolism can be analyzed serially without any invasion at low cost.