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Fig. 7 | Journal of Cardiovascular Magnetic Resonance

Fig. 7

From: Improved catheter tracking during cardiovascular magnetic resonance-guided cardiac catheterization using overlay visualization

Fig. 7

Results of the balloon visualization analysis (A), image quality rating (B), and agreement between pulmonary transit time measurements (C). T1-overlay significantly improved the amount of time that the balloon was kept in view throughout the procedure in the first 30 patients due to the high contrast images and thicker imaging slab (A), p < 0.001. T1-overlay images were also rated significantly higher in these patients in all three qualitative categories: visualization of cardiac structures (p < 0.05), blood/balloon contrast (p < 0.05), suitability for iCMR guidance (p < 0.05). The boxes (A, B) extend from the 25th to 75th percentiles, with a line at the median, and the whiskers to the minimum and maximum values. The measurements of pulmonary transit time (C) also agreed very well between fluoroscopy nd iCMR selective injections (r = 0.89)

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