Prediction of myocardial perfusion abnormalities by quantitative regional function using a radionuclide angiography database: a comparison with wall motion analysis.
OBJECTIVE
Myocardial perfusion and functional information during the same study is now feasible. A new assessment of regional ejection fraction at rest and peak exercise by first-pass radionuclide angiography using a "normal" database file has been developed.


OBJECTIVE
This study was performed to assess the relation between this new method of quantitative regional ejection fraction and myocardial perfusion abnormalities and to compare this new technique with visual analysis of regional wall motion.


METHODS
Consecutive patients (n = 126) with simultaneous first-pass radionuclide angiography and perfusion SPECT imaging were studied at rest and peak exercise using a same-day protocol. The area under the receiver-operator characteristic curve (C index) was used to assess the concordance probability between perfusion and functional measurements, and logistic regression models were used to examine the ability of functional variables to predict perfusion results.


RESULTS
A high concordance was found between the visual analysis of wall motion and perfusion abnormalities (C index = 0.796), and also between regional ejection fraction and perfusion defects (C index = 0.784). The maximal predictive power of functional variables was obtained by combining wall motion analysis and regional ejection fraction (C index = 0.859). Regional ejection fraction contributed, with 20% more information than provided by wall motion analysis alone (chi2 = 9.2, P = 0.0025).


CONCLUSIONS
Quantitative regional ejection fraction using a normal database file has a strong relation to perfusion abnormalities and provides incremental information to regional wall motion analysis for predicting perfusion abnormalities. This new technique should be regarded as a potential adjunct to functional studies to evaluate patients with ischemic heart disease.
Borges-Neto
S
S
Department of Radiology (Nuclear Medicine), Duke University Medical Center and Health Systems, Durham, North Carolina 27710, USA. borge001@mc.duke.edu
Javid
A
A
Kong
D
D
Shaw
L
L
Coleman
R E
RE
D006328:Cardiac Catheterization; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging*; D016208:Databases, Factual; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D011237:Predictive Value of Tests; D012372:ROC Curve; D011875:Radionuclide Angiography; D012189:Retrospective Studies; D013318:Stroke Volume; D015899:Tomography, Emission-Computed, Single-Photon