Comparison of Epicardial Fat Volume between Patients with Normal Perfusion and Reversible Perfusion Abnormalities on Myocardial Perfusion Imaging

Figures

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  Figure 1. Flow-chart showing the inclusion of studies for data retrieval from myocardial perfusion imaging studies showing the inclusion and exclusion criteria

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  Figure 2. Demographics of risk factors. Clustered bar chart representing the number of records with respective risk factors. Ischemia/grey bars represent the number of records showing reversible perfusion abnormalities; Normal/blue bars represent records with no perfusion abnormalities on myocardial perfusion imaging study

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  Figure 3. Clustered column chart showing percentages of perfusion defects (depicted on vertical axis) divided according to their respective territories (as depicted on horizontal axis). Perfusion defects on stress-rest myocardial perfusion imaging study are separated. Absence of grey column represents absence of infarcts in the respective territories. TVD: Triple vessel disease involving LAD, LCX and RCA vessels. LAD: Left anterior descending, LCX: Left circumflex, RCA: Right coronary artery

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  Figure 4. A simple column chart showing the average epicardial fat volumes (in ml) with respect to the perfusion defect noted in respective particular territory/territories

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  Figure 5. Box-plot diagram showing the distribution of epicardial fat volume in association with single photon emission computed tomography myocardial perfusion imaging results. Scans with evidence of ischemia on single photon emission computed tomography myocardial perfusion imaging showed a significant increase in epicardial fat volume compared to that with normal nuclear perfusion imaging (P < 0.001; confidence interval >95%)

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  Figure 6. Scan record of a 40-year-old male patient with normal perfusion on the myocardial perfusion single photon emission computed tomography/ computed tomography. The distribution of the epicardial fat is seen in transaxial and coronal planes after delineation and processing (a), and the distribution of radiotracer is seen in single photon emission computed tomography sectional images, polar plot and the gated images (b). Epicardial fat volume in this record was found to be 82.23 ml

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  Figure 7. Scan record of a 70-year-old male patient with reversible perfusion defect on the stress and rest myocardial perfusion single photon emission computed tomography/computed tomography. The distribution of the epicardial fat is seen in transaxial and coronal planes after delineation and processing (a), and the ischemic changes in left anterior descending and left circumflex territories are seen in single photon emission computed tomography sectional images, polar plot and the gated images (b). Epicardial fat volume in this record was found to be 115.87 ml