title: Activity measurement of biomedical radionuclides with complex decay schemes by the 4pi-gamma method.
abstract: Many of the radionuclides expected to be used shortly in medicine and biology have complex and poorly-known decay schemes. The result is that traditional methods of activity measurement are hard to apply and give inaccurate results. The 4pi-gamma method, which takes advantage of the actual complexity of the decay scheme, is very easy to use and, in suitable cases, can give measurements sufficiently precise and independent of the constants used in the calculations to be considered absolute. Under these circumstances, it offers a tempting alternative to the beta-gamma coincidence method.
mesh_terms: D008722:Methods; D011851:Radioactivity; D011868:Radioisotopes
chemical_list: D011868:Radioisotopes