Cerebral VentriculographyRadionuclide VentriculographyVentriculography, First-PassGated Blood-Pool ImagingCerebral ArteriesStroke VolumeAngiocardiographyHeart VentriclesCineangiographyCerebral InfarctionHeart AneurysmSodium Pertechnetate Tc 99mVentricular Function, LeftCerebral PalsyRadionuclide AngiographyCerebrovascular CirculationTakotsubo CardiomyopathyVentricular Dysfunction, LeftMiddle Cerebral ArteryTechnetiumHeartIothalamate MeglumineMyocardial InfarctionElectrocardiographyDiatrizoatePrenalterolEchocardiographyTechnetium Tc 99m PyrophosphateThalliumIopamidolCerebral AngiographyInfarction, Middle Cerebral ArteryCardiac VolumeIothalamic AcidMalaria, CerebralCoronary DiseaseBrainTomography, Emission-Computed, Single-PhotonCardiac CatheterizationCoronary AngiographyCerebral Veins