Document Detail

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.
MedLine Citation:
PMID:  7863985     Owner:  NLM     Status:  MEDLINE    
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)
A R Galassi; G Centamore; A Fiscella; A Coppola; F Liberti; M Franco; G Palazzo; S Musumeci; A Galassi
Related Documents :
17349885 - Integrated single-photon emission computed tomography and computed tomography coronary ...
9037855 - Persistent lung uptake in the redistribution phase of tl-201 chloride myocardial spects...
174835 - Dual radionuclide study of myocardial infarction. relationships between myocardial upta...
8429335 - Assessment of myocardial perfusion defect size after early and delayed spect imaging wi...
2943785 - Severe functional limitation in patients with hypertrophic cardiomyopathy and only mild...
19561315 - Reconstruction of myocardial tissue motion and strain fields from displacement-encoded ...
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The American journal of cardiology     Volume:  75     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1995 Mar 
Date Detail:
Created Date:  1995-03-21     Completed Date:  1995-03-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  436-42     Citation Subset:  AIM; IM    
Division of Cardiology, Cannizzaro Hospital, Catania, Italy.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Blood Pressure
Coronary Disease / complications,  physiopathology,  radionuclide imaging*
Exercise Test
Heart / physiopathology,  radionuclide imaging*
Heart Rate
Middle Aged
Thallium Radioisotopes / diagnostic use*
Tomography, Emission-Computed, Single-Photon*
Ventricular Dysfunction, Left / etiology,  physiopathology,  radionuclide imaging*
Reg. No./Substance:
0/Thallium Radioisotopes

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Does the induction of ventricular flutter or fibrillation at electrophysiologic testing after myocar...
Next Document:  Inhibitory effect of nitroglycerin and sodium nitroprusside on platelet activation across the corona...