SCMR China: Volumes-Volumes 072022

Video Transcription

Video Summary

The webinar featured a lecture by Professor Ming-Ting Wu on cardiac MRI volume analysis, with emphasis on its role as a foundational skill in cardiac functional assessment. He explained why image quality, gating, temporal resolution, and correct plane selection are critical for accurate measurement of LV and RV volumes, mass, stroke volume, and ejection fraction.  <br /><br />Professor Wu reviewed practical imaging optimization steps such as balanced SSFP use, shimming, frequency scouting, and choosing appropriate triggering methods to avoid missing end-diastolic data. He also discussed standard reporting methods: visual assessment of anatomy and motion, quantitative analysis using AHA segment models, and decisions about whether to include papillary muscles and trabeculations in LV calculations.  <br /><br />A major part of the talk focused on right ventricular analysis, which is more complex than LV assessment. He compared short-axis and axial approaches and highlighted common challenges in RV contouring, especially in congenital heart disease and postoperative cases. He also discussed strain imaging, its limitations across vendors, and the importance of operator training and reproducibility.  <br /><br />Finally, Professor Wu introduced emerging techniques such as tissue tracking and tissue feature mapping, which may provide more stable functional metrics and even enable kinetic energy analysis of cardiac motion. The session ended with a Q&A about AI-assisted contouring, temporal resolution, and differences between CT and MRI-based functional measurements.

Keywords

cardiac MRI

volume analysis

left ventricular assessment

right ventricular analysis

ejection fraction

balanced SSFP

temporal resolution

AHA segment model

strain imaging

AI-assisted contouring