Effect of blood flow on double inversion recovery vessel wall MRI of the peripheral arteries: Quantitation with T2 mapping and comparison with flow-insensitive T2-prepared inversion recovery imaging

✍ Scribed by Ryan Brown; Thanh D. Nguyen; Pascal Spincemaille; Matthew D. Cham; Grace Choi; Priscilla A. Winchester; Martin R. Prince; Yi Wang

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 494 KB
• Volume: 63
• Category: Article
• ISSN: 0740-3194
• DOI: 10.1002/mrm.22227

✦ Synopsis

Blood suppression in the lower extremities using flow-reliant methods such as double inversion recovery may be problematic due to slow blood flow. T 2 mapping using fast spin echo (FSE) acquisition was utilized to quantitate the effectiveness of double inversion recovery blood suppression in 13 subjects and showed that 25 6 12% of perceived vessel wall pixels in the popliteal arteries contained artifactual blood signal. To overcome this problem, a flow-insensitive T 2 -prepared inversion recovery sequence was implemented and optimal timing parameters were calculated for FSE acquisition. Black blood vessel wall imaging of the popliteal and femoral arteries was performed using two-dimensional T 2 -prepared inversion recovery-FSE in the same 13 subjects. Comparison with twodimensional double inversion recovery-FSE showed that T 2prepared inversion recovery-FSE reduced wall-mimicking blood artifacts that inflated double inversion recovery-FSE vessel wall area measurements in the popliteal artery. Magn