| pubmed-article:949514 | pubmed:abstractText | Small bone volumes, porous and irregular structured objects with volumes 0.05-2 cm3, were measured by differential pressure of displaced air. The differential air pressure was measured by a piezoelectric resistor pressure gauge. The gas-displacement system was used to measure the volumes of 234 bone specimens for calculation of bone density. The operation of the system, calibration, sensitivity, and errors of measurement are described. | lld:pubmed |
