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Fig. 6 | Journal of Cardiovascular Magnetic Resonance

Fig. 6

From: User-initialized active contour segmentation and golden-angle real-time cardiovascular magnetic resonance enable accurate assessment of LV function in patients with sinus rhythm and arrhythmias

Fig. 6

Cine and real-time LV slice volumes and volume rates in a single clinical patient in predominantly sinus rhythm (heart rate = 76 bpm). A Single-slice volume over time for cine (black) and real-time (red = end-expiration, blue = inspiration). In the cine images, two cardiac cycles are shown by repeating the image data to observe the continuity in volume around end-diastole. Slice end-diastolic volume (EDV) (square) and end-systolic volume (ESV) (triangle) points were identified in both cine and real-time data for volumetric comparison. Slice EDV and ESV from manual segmentation of cine images are plotted as dashed horizontal lines. Respiratory phase was determined by tracking diaphragm motion. B Slice Volume change rate (dV_s/dt) for cine and real-time data. Maximum and minimum dV_s/dt from cine frames are plotted as dashed horizontal lines. C 1D projections through cine and real-time images, with the line indicating the projection location which intersects the anteroseptum and inferolateral wall, and D 1D projections through cine and real-time images, with the line indicating the projection through the anterior and inferior walls. In the real-time data, a single arrhythmic event can be seen (t = 10 sec)

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