1. A nuclear imaging system comprising: a scanner which detects radiation from a radioisotope contaminated tracer injected into a subject, which tracer includes at least one primary radioisotope component and one or more contamination radioisotope components; a reconstruction processor which reconstructs a detected radiation into image representations; at least one of (1) an uptake correction processor which corrects the reconstructed images and the detected radiation in accordance with a decay curve of the radioisotope contaminated tracer and/or (2) a processor which determines the decay curve of the radioisotope contaminated tracer; and a display which displays at least one of (1) a reconstructed image representation corrected for the decay curve of the tracer and/or (2) a reconstructed image without correction and the decay curve of the tracer to enable a diagnostician to correct the uncorrected images during analysis.