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Fig. 4A —Volume-targeted navigator-gated and navigator-corrected double oblique 3D segmented k-space gradient-echo images obtained in three subjects (3 T, TR/TE = 4.3/1.47, =20°, resolution=0.7x1x3 mm, field of view = 360 x 270 mm, 512 x 268 matrix, 16 radiofrequency excitations per R-R interval, acquisition time window [T_acq] = 69 milliseconds, bandwidth = 362 Hz/pixel, scan duration = 145-259 seconds depending on navigator efficiency and heart rate, 10 slices [acquired], 20 slices [reconstructed using zero filling], fat saturation, adiabatic T2 prepulse [TE = 50 milliseconds]). Axial views of left anterior descending coronary artery in 31-year-old healthy man acquired at trigger delay of 579 milliseconds using visual assessment method (A) and at trigger delay of 675 milliseconds using FREEZE software tool (B). Conspicuity of vessel (arrows) differs between B and A.