Radiotracers and drug registration -- Radioactivity and radiotracers -- The study of drug metabolism using radiotracers -- DNA binding, isotope dilution and other uses of radiotracers -- Quantitative whole-body autoradiography (QWBA) -- Scintillation counting -- Statistics in liquid scintillation counting -- Instrumentation for detection of radioactivity -- Sample preparation for liquid scintillation counting -- Biomedical accelerator mass spectrometry -- Positron emission tomography -- Gamma scintigraphy and SPECT.