(Circulation. 1995;91:1006-1015.)
© 1995 American Heart Association, Inc.
Articles |
Comparison of Low-Dose Dobutamine–Gradient-Echo Magnetic Resonance Imaging and Positron Emission Tomography With [18F]Fluorodeoxyglucose in Patients With Chronic Coronary Artery Disease
A Functional and Morphological Approach to the Detection of Residual Myocardial Viability
From the Klinik III für Innere Medizin (F.M.B., C.A.S., U.S.) and the Klinik und Poliklinik für Nuklearmedizin (E.V., P.T., H.S.), Universität zu Köln, Germany.
Correspondence to Udo Sechtem, MD, Klinik III für Innere Medizin, Universität zu Köln, Joseph-Stelzmann-Str 9, D-50924 Köln, Germany.
Background There have been conflicting reports of whether substantial myocardial thinning alone as an indirect sign of myocardial scarring is sufficient evidence to exclude the presence of viable myocardium in patients with previous myocardial infarction and persisting regional left ventricular akinesia. Demonstration of a dobutamine-induced contraction reserve in postischemic viable but akinetic myocardium may serve as a direct indicator of myocardial viability. In the present study, end-diastolic wall thickness at rest and dobutamine-induced systolic wall thickening assessed by magnetic resonance imaging (MRI) were compared with corresponding [18F]fluorodeoxyglucose uptake as assessed by positron emission tomography (FDG-PET).
Methods and Results Thirty-five patients with myocardial
infarction (infarct age, >4 months) and regional akinesia or
dyskinesia assessed by left ventriculography underwent rest and
dobutamine MRI studies (10 µg
dobutamine · min-1 · kg-1) and
FDG-PET followed by segmental analyses of end-diastolic
wall thickness, systolic wall thickening, and FDG uptake in
corresponding short-axis tomograms. Two definitions of viability, as
assessed by MRI, of a segment akinetic at baseline were used: (1)
end-diastolic wall thickness of 
5.5 mm (the mean minus
2.5 SD of a healthy control group [n=21]) and (2) evidence of
dobutamine-induced systolic wall thickening 1 mm. Segments were
graded as viable by FDG-PET if FDG uptake was 50% of the maximum
uptake in a region with normal wall motion as assessed by left
ventriculography. Preserved end-diastolic wall thickness in
akinetic regions was found in 17 of 35 (48%) patients at rest, and
functional recovery within the infarct region was found in 19 of 35
(54%) patients during dobutamine infusion. Viability of the infarct
region was indicated by FDG-PET in 23 of 35 patients (66%), yielding a
diagnostic agreement between FDG uptake and myocardial morphology in 29
of 35 (83%) and between dobutamine-induced contraction reserve and
FDG-PET in 31 of 35 (89%). Of 2200 segments, 482 (22%) were akinetic
at rest. Of these akinetic segments, 234 (48%) had preserved
end-diastolic wall thickness, 251 (52%) had a
dobutamine-induced contraction reserve, and 299 (62%) were graded as
viable by FDG-PET. Correlations of FDG uptake with
end-diastolic wall thickness at rest (r=.48) and
with dobutamine-induced wall thickening (r=.42) were
similar. Comparison of segmental MRI and FDG-PET gradings indicated
that dobutamine-induced wall thickening was a better predictor of
residual metabolic activity (sensitivity, 81%; specificity, 95%;
positive predictive accuracy, 96%) than was end-diastolic
wall thickness (sensitivity, 72%; specificity, 89%; positive
predictive accuracy, 91%). However, grading a segment as viable if at
least one of both MRI parameters fulfilled viability criteria improved
the sensitivity (88%) of MRI for FDG-PET–assessed metabolic activity
without a major decrease in specificity (87%) or positive predictive
accuracy (92%).
Conclusions Viable myocardium is characterized by preserved end-diastolic wall thickness and a dobutamine-inducible contraction reserve. Both parameters should be taken into account to maximize the sensitivity of MRI in the detection of regions with signs of viability on FDG-PET images.
Key Words: myocardial infarction • inotropic agents • stress
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|
|
|
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|
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|
|
|
|
|
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|
|
|
|
 |
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
 |
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
 |
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
|
|
C. B. Higgins Prediction of Myocardial Viability by MRI Circulation, February 16, 1999; 99(6): 727 - 729. [Full Text] [PDF]
|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
 |
|
 W. Wijns, S. F. Vatner, and P. G. Camici Hibernating Myocardium N. Engl. J. Med., July 16, 1998; 339(3): 173 - 181. [Full Text] [PDF]
|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
|
 |
|
 A. Cohen, C. Chauvel, B. Benhalima, P. Guyon, I. Desert, J. Valty, and A. Cohen Is Dobutamine Stress Echocardiography Useful for Noninvasive Differentiation of Ischemic from Idiopathic Dilated Cardiomyopathy? Angiology, September 1, 1997; 48(9): 783 - 793. [Abstract] [PDF]
|
|
|
|
|
|
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|
|
|
|
|
|
S. H. Rahimtoola Hibernating Myocardium Has Reduced Blood Flow at Rest That Increases With Low-Dose Dobutamine Circulation, December 15, 1996; 94(12): 3055 - 3061. [Full Text]
|
|
|
|
|
|
E. E. van der Wall, H. W. Vliegen, A. de Roos, and A. V.G. Bruschke Magnetic Resonance Imaging in Coronary Artery Disease Circulation, November 1, 1995; 92(9): 2723 - 2739. [Abstract] [Full Text]
|
|
|
|
|
|
G. M. Pohost Is 31P-NMR Spectroscopic Imaging a Viable Approach to Assess Myocardial Viability? Circulation, July 1, 1995; 92(1): 9 - 10. [Full Text]
|
|
|
|
|
|
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|
|