Comparison of dobutamine stress echocardiography with and without real-time perfusion imaging for detection of coronary artery disease.
In a pilot study of 27 patients, those who presented with chest pain underwent 2 dobutamine stress echocardiographic studies, 1 with high mechanical index harmonic imaging to analyze wall motion without contrast and 1 with real-time low mechanical index perfusion imaging with intravenous Optison to assess myocardial perfusion and wall motion. All patients then underwent quantitative coronary angiography. Two independent reviewers demonstrated an improvement in sensitivity when analyzing myocardial perfusion. In the 21 patients who had significant coronary stenoses, 14 had abnormal myocardial perfusion detected at peak stress and 7 had abnormal wall motion detected by standard dobutamine stress echocardiography. There was decreased specificity with perfusion imaging by 1 reviewer. The addition of real-time perfusion imaging after intravenous contrast during dobutamine stress echocardiography has the potential to improve detection of coronary artery disease.
Xie
Feng
F
University of Nebraska Medical Center, Omaha, Nebraska, USA.
Tsutsui
Jeane M
JM
McGrain
Anna C
AC
Demaria
Anthony
A
Cotter
Bruno
B
Becher
Harald
H
Lebleu
Curtis
C
Labovitz
Arthur
A
Picard
Michael H
MH
O'Leary
Edward L
EL
Porter
Thomas R
TR
D000418:Albumins / Q000008:administration & dosage; D002316:Cardiotonic Agents / Q000008:administration & dosage; D003287:Contrast Media / Q000008:administration & dosage*; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging* / Q000503:physiopathology; D004280:Dobutamine / Q000008:administration & dosage; D025401:Echocardiography, Stress / Q000379:methods*; D005260:Female; D005466:Fluorocarbons / Q000008:administration & dosage; D005500:Follow-Up Studies; D006801:Humans; D007262:Infusions, Intravenous; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction / Q000502:physiology*; D015588:Observer Variation; D010865:Pilot Projects; D015203:Reproducibility of Results; D012720:Severity of Illness Index
D000418:Albumins; D002316:Cardiotonic Agents; D003287:Contrast Media; C099458:FS 069; D005466:Fluorocarbons; D004280:Dobutamine