Abstract
A bone scanning device for determination of the bone mineral content in coccygeal vertebrae of cattle is described. The equipment has two gamma radiation sources, consisting of (125)I and (241)Am with energies of 27 and 60 keV, respectively. Absorption is measured by a scintillator photomultiplier detector. The precision of the method has been tested in vivo and found satisfactory (1.5%). It is therefore well suited for measuring bone mineral content in coccygeal vertebrae, and thereby the changes which take place in mineral content can be followed.