densitometri

Densitometry is a measurement technique used to determine the density of a substance, typically in the context of biological, geological, or material sciences. It involves assessing the mass per unit volume to obtain insights into composition, structure, or health status.

In medical practice, densitometry is commonly employed to evaluate bone mineral density (BMD), aiding in the diagnosis and monitoring of osteoporosis and other metabolic bone disorders. Dual-energy X-ray absorptiometry (DEXA or DXA) is the most widely used method for bone densitometry, providing precise measurements with minimal radiation exposure. Other techniques include single-photon absorptiometry and quantitative computed tomography.

In geology and material science, densitometry is utilized to analyze mineral compositions, porosity, or structural integrity of samples. It can involve various methods such as Archimedes' principle, where an object’s weight in air and in water determines its density, or gamma-ray densitometry, which uses gamma radiation to assess density variations within materials.

Advances in densitometry technology have improved measurement accuracy, reduced measurement time, and expanded applications across disciplines. These methods are essential for research, quality control, and clinical diagnosis.

Overall, densitometry provides critical data for understanding material properties and biological health, supporting better decision-making and scientific insights across multiple fields.