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. 2025 Aug 1;12:1598453. doi: 10.3389/fcvm.2025.1598453

Figure 2.

Four rows of cardiac function data display left ventricular pressure-strain loops, myocardial work index bullseye plots, and global longitudinal strain maps for different patients. Left column shows pressure-strain loops with left ventricular pressure (mmHg) versus strain (%). Middle column presents myocardial work index values in a color-coded bullseye plot, with higher values shown in red/yellow and lower values in green. Right column shows segmental strain values, with red shades indicating impaired strain and central values representing global longitudinal strain. Data suggest varying degrees of myocardial function, with some patients showing uniform strain and work, and others displaying regional dysfunction.

Demonstration of myocardial work during regadenoson stress. (A) Data from a patient with myocardial ischemia: the top shows myocardial work before stress, and the bottom shows myocardial work after stress. (B) Data from a patient without myocardial ischemia: the top shows myocardial work before stress, and the bottom shows myocardial work after stress.