BACKGROUND: This study assessed the accuracy of exercise methoxy isobutyl isonitrile (MIBI) single photon emission computed tomography (SPECT) in the evaluation of the extent of coronary artery disease (CAD) in patients with an earlier myocardial infarction. METHODS AND RESULTS: We studied 135 patients (mean age, 57+/-10 years; 115 men) at a mean of 4.1 years (median, 1 year) after myocardial infarction with symptom-limited bicycle exercise stress and rest MIBI SPECT imaging. Coronary angiography was performed within 3 months. Significant CAD was defined as a stenosis of 50% or larger in luminal diameter in 1 or more major coronary arteries. Myocardial perfusion defects (fixed, reversible, or both) were detected in 107 of the 113 patients with significant CAD and in 10 of the 22 patients without significant CAD (sensitivity, 95%; CI, 91 to 99; specificity, 55%; CI, 46 to 63, and accuracy, 88%; CI, 82 to 94). The specificity rate increased to 73% (CI, 65 to 80) by using only reversible perfusion defects as a means of predicting CAD. Reversible perfusion abnormalities were more frequent in patients with multivessel CAD than in patients with single-vessel CAD (51 of 64 [80%] vs. 27 of 49 [55%], P<.01). Myocardial perfusion abnormalities in 2 vascular regions, which is suggestive of multivessel CAD, were detected in 35 of the 64 patients with and in 9 of the 71 patients without multivessel CAD (sensitivity for detecting CAD in more than one vascular region, 55%; CI, 46 to 63, specificity, 87%; CI, 81 to 93, and accuracy, 72%; CI, 64 to 80). The sensitivity rates for the diagnosis of left anterior descending coronary artery, left circumflex, and right coronary artery based on any defect were 80%, 70%, and 63%, respectively. The corresponding specificity rates were 70%, 76%, and 73%, respectively. CONCLUSIONS: Exercise MIBI SPECT imaging is an accurate method for the diagnosis and localization of CAD in patients with an earlier myocardial infarction. The technique provides a high specificity and moderate sensitivity for the diagnosis of multivessel CAD on the basis of myocardial perfusion abnormalities in more than 1 vascular region.
BACKGROUND: This study assessed the accuracy of exercise methoxy isobutyl isonitrile (MIBI) single photon emission computed tomography (SPECT) in the evaluation of the extent of coronary artery disease (CAD) in patients with an earlier myocardial infarction. METHODS AND RESULTS: We studied 135 patients (mean age, 57+/-10 years; 115 men) at a mean of 4.1 years (median, 1 year) after myocardial infarction with symptom-limited bicycle exercise stress and rest MIBI SPECT imaging. Coronary angiography was performed within 3 months. Significant CAD was defined as a stenosis of 50% or larger in luminal diameter in 1 or more major coronary arteries. Myocardial perfusion defects (fixed, reversible, or both) were detected in 107 of the 113 patients with significant CAD and in 10 of the 22 patients without significant CAD (sensitivity, 95%; CI, 91 to 99; specificity, 55%; CI, 46 to 63, and accuracy, 88%; CI, 82 to 94). The specificity rate increased to 73% (CI, 65 to 80) by using only reversible perfusion defects as a means of predicting CAD. Reversible perfusion abnormalities were more frequent in patients with multivessel CAD than in patients with single-vessel CAD (51 of 64 [80%] vs. 27 of 49 [55%], P<.01). Myocardial perfusion abnormalities in 2 vascular regions, which is suggestive of multivessel CAD, were detected in 35 of the 64 patients with and in 9 of the 71 patients without multivessel CAD (sensitivity for detecting CAD in more than one vascular region, 55%; CI, 46 to 63, specificity, 87%; CI, 81 to 93, and accuracy, 72%; CI, 64 to 80). The sensitivity rates for the diagnosis of left anterior descending coronary artery, left circumflex, and right coronary artery based on any defect were 80%, 70%, and 63%, respectively. The corresponding specificity rates were 70%, 76%, and 73%, respectively. CONCLUSIONS: Exercise MIBI SPECT imaging is an accurate method for the diagnosis and localization of CAD in patients with an earlier myocardial infarction. The technique provides a high specificity and moderate sensitivity for the diagnosis of multivessel CAD on the basis of myocardial perfusion abnormalities in more than 1 vascular region.
Authors: S Borges-Neto; L J Shaw; K L Kesler; M W Hanson; E D Peterson; E I Morris; R E Coleman Journal: J Nucl Cardiol Date: 1997 May-Jun Impact factor: 5.952
Authors: J Maddahi; H Kiat; K F Van Train; F Prigent; J Friedman; E V Garcia; N Alazraki; E G DePuey; K Nichols; D S Berman Journal: Am J Cardiol Date: 1990-10-16 Impact factor: 2.778
Authors: K F Van Train; E V Garcia; J Maddahi; J Areeda; C D Cooke; H Kiat; G Silagan; R Folks; J Friedman; L Matzer Journal: J Nucl Med Date: 1994-04 Impact factor: 10.057
Authors: Abdou Elhendy; Arend F L Schinkel; Ron T van Domburg; Jeroen J Bax; Roelf Valkema; Don Poldermans Journal: J Nucl Cardiol Date: 2004 Nov-Dec Impact factor: 5.952
Authors: E Gerbaud; H Cochet; E Bullier; C Ragot; S H Gilbert; H Douard; Y Pucheu; F Laurent; P Coste; L Bordenave; M Montaudon Journal: Br J Radiol Date: 2014-04-29 Impact factor: 3.039
Authors: Mustafa Hassan; Kaki M York; Qin Li; Dorian G Lucey; Roger B Fillingim; David S Sheps Journal: J Nucl Cardiol Date: 2008-06-12 Impact factor: 5.952
Authors: Abdou Elhendy; Arend F L Schinkel; Ron T van Domburg; Jeroen J Bax; Don Poldermans Journal: J Nucl Cardiol Date: 2004 Sep-Oct Impact factor: 5.952