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Abstract #4236

Magnetization Transfer from Inhomogeneously Broadened Lines (ihMT): Field Strength Dependency

Olivier M. Girard 1 , Valentin Prevost 1 , Gopal Varma 2 , David C. Alsop 2 , and Guillaume Duhamel 1

1 CRMBM UMR 7339, CNRS / Aix-Marseille Universit, Marseille, France, 2 Radiology Department, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States

Inhomogeneous magnetization transfer (ihMT) imaging has been proposed as a new method for imaging myelinated tissues of the central nervous system. Previous studies have been performed at 1.5T and 3T using different MR systems, and high similarities were observed. In this work the ihMT contrast is quantified at both field strengths using the same acquisition protocol and volunteers to further address the potential field dependency of the ihMT effect. IhMT datasets were very consistent and show no field dependency. The ihMT technique is very robust and experiments may be performed at various field strengths with similar contrast properties.

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