Peds/CHD Pre-Conference Course 02 - Basic Pediatric & CHD CMR Applications-Artifact Trouble Shooting

Video Transcription

Video Summary

The speaker reviews goals and common artifacts in pediatric/congenital cardiac MRI. The main aim is to answer the clinical question while optimizing imaging for patient size, heart rate, breath-holding ability, and hardware. Key artifacts include motion, wrap, flow aliasing, field inhomogeneity from metal or the magnetic field, and radiofrequency “zipper” artifact. Solutions include better breathing instruction, free-breathing or real-time imaging, ECG troubleshooting, adjusting trigger delay, changing field of view, using parallel imaging, increasing velocity encoding, switching sequences, frequency scouting, and sometimes choosing CT instead of MRI. Minimizing artifacts often requires tradeoffs in scan time, resolution, and signal-to-noise ratio.

Keywords

pediatric cardiac MRI

congenital heart disease

imaging artifacts

motion correction

MRI optimization