Parametric Mapping: Here to Stay-Is ECV needed?

Video Transcription

Video Summary

The transcript presents a debate on whether extracellular volume (ECV) mapping is necessary in cardiac MRI. One speaker argues ECV is highly valuable because it often adds diagnostic and prognostic information beyond native T1, especially in diseases like cardiac amyloidosis and hypertrophic cardiomyopathy. ECV can reveal disease even when native T1 is normal and may better predict outcomes in some populations. The speaker also emphasizes ECV’s role in personalized care and monitoring treatment response, while noting challenges such as hematocrit collection and scan burden, with synthetic ECV as a possible workaround.<br /><br />The opposing speaker argues ECV is not always needed. Native T1 and T2 mapping already provide strong diagnostic and prognostic value, especially without contrast, making them useful in patients with renal impairment. ECV can be helpful in selected cases, but its added value depends on disease type, patient population, and practical issues like hematocrit access. The conclusion: ECV is useful sometimes, but not universally.

Keywords

extracellular volume

ECV mapping

native T1 mapping

cardiac MRI

cardiac amyloidosis

hypertrophic cardiomyopathy