Focus Session 5: MR Techniques and Methods: Rapid Image Acquisition and Reconstruction (2019)-Highly Accelerated Steady-State Ferumoxytol Abdomen and Chest MRA using Compressed Sensing

Highly Accelerated Steady-State Ferumoxytol Abdomen and Chest MRA using Compressed Sensing

Video Transcription

Video Summary

The speaker presents a highly accelerated contrast-enhanced MR angiography technique using ultrasmall superparamagnetic iron oxide (USPIO) and compressed sensing. In 16 patients unable to receive gadolinium, the method achieved up to 25× acceleration, allowing 15-second, high-resolution abdominal and chest vascular imaging with large coverage. Compared with clinical first-pass and free-breathing steady-state MRA, the new technique produced comparable large-vessel quality and better renal artery detail, sharpness, and contrast. It also enabled direct protocol comparison in the same patient and may improve assessment of renal stenosis and pre-TAVR planning.

Keywords

USPIO

compressed sensing

MR angiography

renal artery imaging

TAVR planning