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Reassessing the Cardiothoracic Ratio (CTR): From a Chest X-ray Index to Opportunistic Cardiac Screening on Abdominal MRI in ADPKD
The cardiothoracic ratio is a century-old chest X-ray index of heart size. Recent work (Shen et al., JMRI 2026) shows it can be measured directly on the abdominal MRI that ADPKD patients already undergo for kidney-volume monitoring, to identify left ventricular hypertrophy. This article reviews the measurement and diagnostic performance of the CTR, focuses on its value for opportunistic cardiac screening in ADPKD, and discusses the shift toward automated, quantitative imaging.
How to Use TraceOrg for Liver Fat Fraction: MRI-PDFF, Fatty Liver, and GLP-1 Monitoring
Learn how TraceOrg measures liver fat fraction from MRI-PDFF, Dixon water/fat, and fallback sequences, with RSNA/QIBA reference bands for MASLD/NAFLD and GLP-1 or weight-loss monitoring.
How to Use TraceOrg for PKD: TKV, Mayo Class, and Kidney Volume Tracking
A plain-language guide to PKD imaging terms, including TKV, htTKV, Mayo Imaging Classification, longitudinal tracking, and how to prepare imaging files for TraceOrg.
How TraceOrg Tracks Kidney Volume Over Time
Learn how TraceOrg's PKD longitudinal plot shows kidney volume changes across multiple studies, how to read before and after transition trends, and how the annual growth line is estimated.