2015
The influence of clopidogrel on ischemia diagnosed by myocardial perfusion stress testing
Jovin IS, Ebisu KA, Oprea AD, Brandt CA, Natale D, Finta LA, Dziura J, Wackers FJ. The influence of clopidogrel on ischemia diagnosed by myocardial perfusion stress testing. Journal Of Nuclear Cardiology 2015, 23: 773-779. PMID: 26338428, DOI: 10.1007/s12350-015-0268-3.Peer-Reviewed Original ResearchConceptsReversible perfusion defectsOdds ratioPerfusion defectsMyocardial perfusion stress testMyocardial perfusion stress testingStress testStress myocardial perfusion scansMyocardial single photon emissionAdenosine stress testInfluence of clopidogrelLikelihood of ischemiaMyocardial perfusion testingUse of clopidogrelCoronary vascular toneExercise stress testMyocardial perfusion scanMyocardial perfusion imagingSingle photon emissionAdenosine receptor antagonistDiagnosis of ischemiaPerfusion scanPerfusion testingVascular toneReceptor antagonistTomography scan
2004
Abnormal heart rate response to adenosine infusion is associated with silent myocardial ischemia in asymptomatic patients with diabetes mellitus
Sudhakar S, Chyun D, Young L, Inzucchi S, Davey J, Wackers F. Abnormal heart rate response to adenosine infusion is associated with silent myocardial ischemia in asymptomatic patients with diabetes mellitus. Journal Of Nuclear Cardiology 2004, 11: s20. DOI: 10.1016/j.nuclcard.2004.06.064.Peer-Reviewed Original ResearchHeart rate responseSilent myocardial ischemiaLarge myocardial perfusion defectsMyocardial perfusion defectsLarger perfusion abnormalityAsymptomatic patientsNegative predictive valuePerfusion abnormalitiesMyocardial ischemiaPerfusion defectsAdenosine infusionRate responsePredictive valueAbnormal heart rate responseBlunted heart rate responseHigh negative predictive valueLower heart rate responseCoronary artery diseaseMyocardial perfusion abnormalitiesDetection of ischemiaMales 53Autonomic neuropathyArtery diseaseDiabetes mellitusPoor outcomeRandomized, Controlled Dose-Ranging Study of the Selective Adenosine A2A Receptor Agonist Binodenoson for Pharmacological Stress as an Adjunct to Myocardial Perfusion Imaging
Udelson J, Heller G, Wackers F, Chai A, Hinchman D, Coleman P, Dilsizian V, DiCarli M, Hachamovitch R, Johnson J, Barrett R, Gibbons R. Randomized, Controlled Dose-Ranging Study of the Selective Adenosine A2A Receptor Agonist Binodenoson for Pharmacological Stress as an Adjunct to Myocardial Perfusion Imaging. Circulation 2004, 109: 457-464. PMID: 14734517, DOI: 10.1161/01.cir.0000114523.03312.7d.Peer-Reviewed Original ResearchConceptsReversible perfusion defectsDose-related reductionAdenosine receptor stimulationSide effectsPharmacological stressPerfusion defectsReceptor stimulationFrequent side effectsSubjective side effectsDose-Ranging StudyMyocardial perfusion imagingAdenosine A2A receptorsSingle photon emissionChest painCoronary vasodilationCrossover trialBinodenosonA2A receptorsPerfusion imagingSelective agonismRandom orderSeverityKappa valuesSimilar degreePhoton emission
2003
Comparison of 16-frame and 8-frame gated SPET imaging for determination of left ventricular volumes and ejection fraction
Navare SM, Wackers FJ, Liu YH. Comparison of 16-frame and 8-frame gated SPET imaging for determination of left ventricular volumes and ejection fraction. European Journal Of Nuclear Medicine And Molecular Imaging 2003, 30: 1330-1337. PMID: 12838373, DOI: 10.1007/s00259-003-1231-0.Peer-Reviewed Original ResearchConceptsSingle photon emission tomographyEnd-diastolic volumeEnd-systolic volumePerfusion defectsEjection fractionMyocardial perfusionSPET imagesLV volumesLeft ventricular end-diastolic volumeVentricular end-diastolic volumeSmaller end-systolic volumeLarger end-diastolic volumeSignificant perfusion defectsMyocardial perfusion defectsRadiotracer doseHigher LVEFVentricular functionLow doseVentricular volumeEmission tomographyLV parametersDoseLVEFECG gatingPatients
2000
Assessment of left ventricular ejection fraction with quantitative gated SPECT: Accuracy and correlation with first-pass radionuclide angiography
Vallejo E, Dione D, Sinusas A, Wackers F. Assessment of left ventricular ejection fraction with quantitative gated SPECT: Accuracy and correlation with first-pass radionuclide angiography. Journal Of Nuclear Cardiology 2000, 7: 461-470. PMID: 11083195, DOI: 10.1067/mnc.2000.107820.Peer-Reviewed Original ResearchConceptsVentricular ejection fractionEjection fractionPatient studiesLeft ventricular ejection fractionExtracardiac activityFirst-pass radionuclide angiographyLarger end-diastolic volumeStress-induced ischemiaEnd-diastolic volumeQuantitative gated SPECTSingle photon emissionAbnormal LVEFNormal LVEFRadionuclide angiographyDiastolic volumeLVEFPerfusion defectsLVEF valuesSame patientHeart sizeLeft ventricleGated SPECTSPECT studiesQGSMean restReproducibility and accuracy of gated SPECT for determination of left ventricular volumes and ejection fraction: experimental validation using MRI.
Vallejo E, Dione DP, Bruni WL, Constable RT, Borek PP, Soares JP, Carr JG, Condos SG, Wackers FJ, Sinusas AJ. Reproducibility and accuracy of gated SPECT for determination of left ventricular volumes and ejection fraction: experimental validation using MRI. Journal Of Nuclear Medicine 2000, 41: 874-82; discussion 883-6. PMID: 10809204.Peer-Reviewed Original Research
1995
Tomographic and planar quantitation of perfusion defects on technetium 99m-labeled sestamibi scans: Evaluation in patients treated with thrombolytic therapy for acute myocardial infarction
Mortelmans L, Wackers F, Nuyts J, Scheys I, Brzostek T, Schiepers C, Lesaffre E, Suetens P, Verbruggen A, Van de Werf F. Tomographic and planar quantitation of perfusion defects on technetium 99m-labeled sestamibi scans: Evaluation in patients treated with thrombolytic therapy for acute myocardial infarction. Journal Of Nuclear Cardiology 1995, 2: 133-143. DOI: 10.1016/s1071-3581(06)80023-1.Peer-Reviewed Original Research
1994
Effects of altered left ventricular geometry on quantitative technetium 99m sestamibi defect size in humans: Perfusion imaging during coronary angioplasty
Haronian H, Sinusas A, Remetz M, Brennan J, Cabin H, Zaret B, Wackers F. Effects of altered left ventricular geometry on quantitative technetium 99m sestamibi defect size in humans: Perfusion imaging during coronary angioplasty. Journal Of Nuclear Cardiology 1994, 1: 150-158. PMID: 9420682, DOI: 10.1007/bf02984087.Peer-Reviewed Original ResearchConceptsPercutaneous transluminal coronary angioplastyLeft ventricular geometryAltered left ventricular geometryCoronary angioplastyRegional wall motionVentricular geometryEnd-diastolic imagesMyocardial perfusionExercise-induced myocardial ischemiaAbnormal regional wall motionMyocardial risk areaTransluminal coronary angioplastyQuantitative defectsExperimental animal modelsPlanar myocardial perfusionMyocardial perfusion imagingQuantitative technetiumResultsNine patientsVentricular functionCoronary arteryMyocardial infarctionVessel occlusionMyocardial ischemiaPerfusion defectsWall motion
1993
A new quantitative method for the analysis of cardiac perfusion tomography (SPET): validation in post-infarct patients treated with thrombolytic therapy
Mortelmans L, Nuyts J, Scheys I, Wackers F, Lesaffre E, Brzostek T, De Roo M, De Geest H, Suetens P, Verbruggen A, Van de Werf F. A new quantitative method for the analysis of cardiac perfusion tomography (SPET): validation in post-infarct patients treated with thrombolytic therapy. European Journal Of Nuclear Medicine And Molecular Imaging 1993, 20: 1193-1200. PMID: 8299655, DOI: 10.1007/bf00171018.Peer-Reviewed Original ResearchConceptsEnzymatic infarct sizePerfusion defectsThrombolytic therapyVentricular functionInfarct sizeInfarct-related vesselLarge perfusion defectsThallium-201 chloridePost-infarct patientsPerfusion defect sizeGlobal ventricular functionRegional ventricular functionPerfusion tomographyContrast angiographyPatientsBeneficial effectsTherapyMyocardial perfusion tomogramsSignificant differencesPlanar quantificationValve plane
1988
Demonstration of reperfusion after thrombolysis with technetium-99m isonitrile myocardial imaging.
Kayden D, Mattera J, Zaret B, Wackers F. Demonstration of reperfusion after thrombolysis with technetium-99m isonitrile myocardial imaging. Journal Of Nuclear Medicine 1988, 29: 1865-7. PMID: 2972815.Peer-Reviewed Original ResearchConceptsThrombolytic therapyMyocardial infarctionRecombinant tissue plasminogen activatorAcute anteroseptal myocardial infarctionSuccess of reperfusionSalvage of myocardiumAcute myocardial infarctionAnteroseptal myocardial infarctionMyocardial perfusion defectsMyocardial perfusion imagingTissue plasminogen activatorEmergency roomRepeat injectionsPerfusion defectsIntravenous injectionMyocardial imagingPerfusion imagingMyocardial redistributionInfarctionNoninvasive meansPlasminogen activatorReperfusionImaging agentTherapyTechnetium
1981
Exercise left ventricular performance in patients with chest pain, ischemic-appearing exercise electrocardiograms, and angiographically normal coronary arteries.
Berger HJ, Sands MJ, Davies RA, Wackers FJ, Alexander J, Lachman AS, Williams BW, Zaret BL. Exercise left ventricular performance in patients with chest pain, ischemic-appearing exercise electrocardiograms, and angiographically normal coronary arteries. Annals Of Internal Medicine 1981, 94: 186-91. PMID: 7469209, DOI: 10.7326/0003-4819-94-2-186.Peer-Reviewed Original ResearchConceptsNormal coronary arteriesLeft ventricular performanceChest painVentricular performanceCoronary arteryExercise electrocardiogramAbnormal ejection fraction responseMaximal upright bicycle exerciseCoronary arterial spasmUpright bicycle exerciseEjection fraction responseFirst-pass radionuclide angiocardiographyThallium-201 imagingErgonovine testingVentricular dysfunctionArterial spasmBicycle exerciseErgonovine provocationAdditional patientsTreadmill exercisePerfusion defectsRadionuclide angiocardiographyRegional dysfunctionPatientsFraction response
1980
Comparison of exercise radionuclide angiocardiography and thallium-201 myocardial perfusion imaging in coronary artery disease
Johnstone D, Sands M, Berger H, Reduto L, Lachman A, Wackers F, Cohen L, Gottschalk A, Zaret B. Comparison of exercise radionuclide angiocardiography and thallium-201 myocardial perfusion imaging in coronary artery disease. The American Journal Of Cardiology 1980, 45: 1113-1119. PMID: 7377108, DOI: 10.1016/0002-9149(80)90467-1.Peer-Reviewed Original ResearchConceptsCoronary artery diseaseExercise thallium studiesArtery diseaseVentricular reserveEjection fractionThallium studiesPerfusion defectsLeft ventricular ejection fractionThallium-201 myocardial perfusion imagingThallium-201 myocardial perfusionExercise-induced perfusion defectsRegional wall motion abnormalitiesExercise thallium imagesNormal coronary arteriesUpright bicycle exerciseSingle-vessel diseaseT segment depressionVentricular ejection fractionAbnormal exerciseThallium perfusion defectsWall motion abnormalitiesMyocardial perfusion imagingRegional wall motionExercise radionuclideIschemic SThallium-201 myocardial scintigraphy in acute myocardial infarction and ischemia
Wackers F. Thallium-201 myocardial scintigraphy in acute myocardial infarction and ischemia. Seminars In Nuclear Medicine 1980, 10: 127-145. PMID: 7394537, DOI: 10.1016/s0001-2998(80)80016-x.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionMyocardial infarctionPerfusion defectsThallium-201 myocardial scintigraphyThallium-201 scintigraphyOnset of symptomsResults of scintigraphyChest painUnstable anginaJeopardized myocardiumMyocardial scintigraphyPrognostic stratificationEarly recognitionHigh riskInfarctionPatientsScintigraphyIschemiaHrAnginaComplicationsPainReliable method