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Abstract #1766

Head to Head Comparison of Magnetic Resonance Imaging and Multidetector Computed Tomography in Assessing Long-Term Effects of Microembolization on Myocardial Viability, Perfusion and Function,

Maythem Saeed1, Alastair Martin1, Marcus Carlsson1,2

1UCSF, Dep of Radiology and Biomedical Imaging, San Francisco, CA, USA; 2Lund University Hospital, Dep of Clinical Physiology, Lund, Sweden

Microinfarction resulting from microembolized plaques is common in patients but diagnostic imaging tools are lacking. Therefore, this study determined the potential of MRI and 64-slice MDCT to quantify function, perfusion and viability in chronic microinfarction. The main findings were that both MRI and 64-slice MDCT could visualize and quantify chronic microinfarction and furthermore, the extent of microinfarction was comparable to histochemical staining. There was an excellent agreement between MDCT and MRI in measuring regional and global LV function and MRI had higher sensitivity to detect perfusion deficit in chronic microinfarction compared to MDCT.