An MRI phantom material for quantitative relaxometry

K. A. Kraft, P. P. Fatouros, G. D. Clarke, P. R.S. Kishore

Research output: Contribution to journalArticlepeer-review

83 Scopus citations


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. © Academic Press, Inc.

Original languageEnglish (US)
Pages (from-to)555-562
Number of pages8
JournalMagnetic Resonance in Medicine
Issue number6
StatePublished - Dec 1987

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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