Determination of blood longitudinal relaxation time (T1) at high magnetic field strengths

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In this study, a circulation system was used to measure T1 values of bovine blood under physiological conditions at field strengths of 4.7, 7 and 9.4 T. Results show that T1 increases linearly with magnetic field B0 and can be described with the equation T1=129 ms/T B0+1167 ms for magnetic field strengths between 1.5 and 9.4 T.

Original languageEnglish (US)
Pages (from-to)733-735
Number of pages3
JournalMagnetic Resonance Imaging
Issue number5
StatePublished - Jun 2007

Bibliographical note

Funding Information:
The authors would like to thank Drs. J. Lin and G. Adriany for technical support, Dr. Johannes Ritter for helpful discussions and Dr. Jamie D. Walls and Essa Yacoub for comments on the manuscript. This work was supported by P41 RR08079, the W. M. Keck Foundation and the MIND Institute.


  • Blood
  • High magnetic field
  • Longitudinal relaxation
  • T


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