Abstract
Various noninvasive cardiac imaging modalities have been employed in patients who present with myocardial ischemia following coronary artery bypass grafting (CABG). The high frequency of multivessel disease makes accurate identification of graft or native vessel obstruction particularly challenging. The presence of graft or native vessel stenosis can be determined by coronary angiography, but noninvasive imaging techniques combined with stress testing are required to determine the functional significance of anatomic disease. Analysis of left ventricular wall motion during exercise or pharmacologic stress and assessment of perfusion by single photon emission computerized tomography (SPECT) are routinely employed for this purpose. SPECT has a high sensitivity for detection of coronary artery disease. However, it provides primarily qualitative information and has limited specificity because of imaging artifacts which may not be readily distinguished from true abnormalities of perfusion.
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Sawada, S.G., Schwaiger, M. (1994). Positron Emission Tomography: Evaluation of Myocardial Blood Flow and Viability Before and Following Coronary Revascularization. In: Lüscher, T.F., Turina, M., Braunwald, E. (eds) Coronary Artery Graft Disease. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78637-2_8
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DOI: https://doi.org/10.1007/978-3-642-78637-2_8
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