ThalliumThallium RadioisotopesFerrocyanidesRadioisotopesTomography, Emission-Computed, Single-PhotonDipyridamoleExercise TestHeartCoronary DiseaseAntidotesAlopeciaRodenticidesRadionuclide VentriculographyPoisoningGated Blood-Pool ImagingIodobenzenesDobutamineOrganotechnetium CompoundsCoronary AngiographyCoronary CirculationTomography, Emission-ComputedRadionuclide ImagingGalliumPotassium RadioisotopesAngina PectorisElectrocardiographyOlfactory Nerve InjuriesMyocardial Stunning