✦ LIBER ✦

An MRI phantom material for quantitative relaxometry

✍ Scribed by K. A. Kraft; P. P. Fatouros; G. D. Clarke; P. R. S. Kishore

Book ID: 102528565
Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 438 KB
Volume: 5
Category: Article
ISSN: 0740-3194
DOI: 10.1002/mrm.1910050606

No coin nor oath required. For personal study only.

✦ Synopsis

Most phantom media in current use exhibit T1 relaxation times that are significantly dependent on both temperature and operating frequency. This can introduce undesirable variability into relaxation measurements due to temperature fluctuations, and complicates direct comparison of imagers operating at different magnetic field strengths. Our investigations of a nickel-doped agarose gel system have demonstrated near independence of the proton relaxation rates to a wide range of temperatures and frequencies. We therefore propose the adoption of Ni2+ as a relaxation modifier for phantom materials used as relaxometry standards.

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