2025/11 - Relationships between Heart Shape, Function and Disease in 38,858 UK Biobank Participants. [Journal Club]-Relationships between Heart Shape, Function and Disease in 38,858 UK Biobank Participants

Relationships between Heart Shape, Function and Disease in 38,858 UK Biobank Participants

Video Transcription

Video Summary

The webinar introduced Episode 11 of Season 6 of the JCMR Journal Club, led by Tim Leuner and hosted by Dr. Valentina Puntmann. The featured paper, presented by Dr. Richard Burns and Prof. Alistair Young, examined relationships between heart shape, function, and disease in 38,858 UK Biobank participants.<br /><br />The speakers explained that traditional measures such as ejection fraction, strain, MAPSE, and TAPSE capture only part of cardiac function. To better represent shape change across the cardiac cycle, they used statistical shape atlasing based on automated CMR segmentations and 3D mesh modeling. After quality control, 25 principal components were retained, capturing over 90% of shape variation.<br /><br />Several principal components corresponded to biologically meaningful features, including heart size, TAPSE, RV function, and ejection fraction. In discriminant analyses, the atlas-based scores generally outperformed standard functional measures in distinguishing several diseases, especially diabetes, atrial fibrillation, myocardial infarction, and heart failure.<br /><br />The discussion highlighted strengths of the approach, as well as limitations such as reliance on UK Biobank disease coding, demographic imbalances, and limited comorbidity separation. The speakers emphasized that atlas scores may eventually help track disease severity and treatment response, and could be valuable for future prediction of incident disease.

Keywords

JCMR Journal Club

cardiac shape atlas

cardiac function

UK Biobank

cardiovascular disease

principal components

CMR segmentation

ejection fraction

discriminant analysis