Technologist Track Session 01: CMR Technical Methods (2018)-T2 parametric mapping

Video Transcription

Video Summary

The speaker introduces T2* cardiac MRI as a practical, highly valuable tool for evaluating tissue, especially in patients with iron overload from transfusion-dependent anemias such as thalassemia. He explains that iron accumulates in organs like the liver and heart, and cardiac toxicity is a major cause of death. T2* is presented as more reliable than blood tests, echocardiography, or even biopsy for guiding treatment and monitoring chelation therapy. The talk covers basic physics: T2* reflects transverse magnetization decay influenced by both spin-spin relaxation and magnetic field inhomogeneities, measured with a gradient echo sequence. He reviews acquisition and analysis, including multi-echo imaging, proper ROI placement in the interventricular septum, and liver sampling. Clinical notes include discordance between heart and liver iron and newer dark-blood sequences with improved reproducibility. The talk concludes that T2* is rapid, validated, and life-saving.

Keywords

T2* cardiac MRI

iron overload

thalassemia

chelation therapy

myocardial iron assessment