Developing Standards with National Institutes-Developing Standards with National Institutes

Video Transcription

Video Summary

The speaker, from NIST, explains how national metrology institutes support medical imaging by improving measurement standards, reproducibility, and adoption of quantitative MRI methods. NIST, like PTB and NPL, develops tools rather than regulations, while agencies like FDA handle regulation. The talk emphasizes major barriers to reproducibility in clinical trials and reviews solutions such as parameter sensitivity studies, phantoms, and multi-site comparisons. Examples include NIST and FDA phantoms, an isotropic diffusion phantom, and a breast phantom for T1 and diffusion imaging. A recent multi-site study showed vendor-dependent differences in T1 measurements, likely related to B1 effects, suggesting that limiting trials to one vendor may reduce variability. The speaker also describes European efforts to build a framework for quantitative perfusion imaging and encourages the community to engage in documentary standards through organizations like ISO, IEC, and ASTM. The main message: standards, phantoms, and collaboration are essential for reliable quantitative imaging.

Keywords

NIST medical imaging

quantitative MRI

measurement standards

imaging phantoms

reproducibility in clinical trials