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Comparison of rest-redistribution thallium-201 imaging and reinjection after stress-redistribution for the assessment of myocardial viability in patients with left ventricular dysfunction secondary to coronary artery disease. 1995

A R Galassi, and G Centamore, and A Fiscella, and A Coppola, and F Liberti, and M Franco, and G Palazzo, and S Musumeci, and A Galassi
Division of Cardiology, Cannizzaro Hospital, Catania, Italy.

Thallium (Tl)-201 reinjection after stress-redistribution (RI) imaging has been proven to accurately identify ischemic and viable myocardium. Quantitative Tl-201 analysis after stress has also shown viable myocardium in most mild to moderate (51% to 85% of normal uptake) irreversible Tl-201 defects. However, if the main clinical question is whether a region is viable, and not whether there is inducible ischemia, a resting protocol may be more appropriate. The aim of this study was to determine whether rest-redistribution (RD) quantitative Tl-201 single-photon emission tomographic imaging provides the same information on viable myocardium as Tl-201 RI. Thus, 15 patients (mean age 58 +/- 9 years) with chronic coronary artery disease and left ventricular dysfunction (ejection fraction 35 +/- 8%) were studied by both RI and RD Tl-201 single-photon emission tomography. Regional Tl-201 uptake was assessed quantitatively using a 16-segment model. When Tl-201 images were classified as normal/reversible (viable) or irreversible (nonviable), RI showed viable myocardium in 145 of 240 myocardial regions (60%), whereas RD showed it in 103 of 240 myocardial regions (43%). The 2 imaging protocols provided concordant information in 176 of 240 myocardial regions (73%). Among the 64 (27%) discordant regions, 53 (22%) were viable by RI and nonviable by RD, whereas 11 (5%) were viable by RD and nonviable by RI (p < 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D003327 Coronary Disease An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels. Coronary Heart Disease,Coronary Diseases,Coronary Heart Diseases,Disease, Coronary,Disease, Coronary Heart,Diseases, Coronary,Diseases, Coronary Heart,Heart Disease, Coronary,Heart Diseases, Coronary
D005080 Exercise Test Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used. Arm Ergometry Test,Bicycle Ergometry Test,Cardiopulmonary Exercise Testing,Exercise Testing,Step Test,Stress Test,Treadmill Test,Cardiopulmonary Exercise Test,EuroFit Tests,Eurofit Test Battery,European Fitness Testing Battery,Fitness Testing,Physical Fitness Testing,Arm Ergometry Tests,Bicycle Ergometry Tests,Cardiopulmonary Exercise Tests,Ergometry Test, Arm,Ergometry Test, Bicycle,Ergometry Tests, Arm,Ergometry Tests, Bicycle,EuroFit Test,Eurofit Test Batteries,Exercise Test, Cardiopulmonary,Exercise Testing, Cardiopulmonary,Exercise Tests,Exercise Tests, Cardiopulmonary,Fitness Testing, Physical,Fitness Testings,Step Tests,Stress Tests,Test Battery, Eurofit,Test, Arm Ergometry,Test, Bicycle Ergometry,Test, Cardiopulmonary Exercise,Test, EuroFit,Test, Exercise,Test, Step,Test, Stress,Test, Treadmill,Testing, Cardiopulmonary Exercise,Testing, Exercise,Testing, Fitness,Testing, Physical Fitness,Tests, Arm Ergometry,Tests, Bicycle Ergometry,Tests, Cardiopulmonary Exercise,Tests, EuroFit,Tests, Exercise,Tests, Step,Tests, Stress,Tests, Treadmill,Treadmill Tests
D005260 Female Females
D006321 Heart The hollow, muscular organ that maintains the circulation of the blood. Hearts
D006339 Heart Rate The number of times the HEART VENTRICLES contract per unit of time, usually per minute. Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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