Abstract #3175

Application of Spin Echoes in the Regime of Weak Dephasing to Oxygen Enhanced T1-Quantification in the Lung

Jakob Assländer¹, Steffen Glaser², and Jürgen Hennig¹

¹Dept. of Radiology - Medical Physics, University Medical Center Freiburg, Freiburg, Germany, ²Dept. of Chemistry, Technische Universität München, Munich, Germany

This paper proposes an inversion-recovery spin-echo SNAPSHOT-FLASH sequence for quantifying proton-density and T₁ of the lung. It is shown that T₁ is reduced compared to the standard gradient-echo sequence. Similar results have been previously reported for UTE sequences. In combination with an iterative algorithm that is similar to MR-fingerprinting reconstructions, the feasibility of acquiring quantitative maps of the entire lung with a resolution of 5 mm x 5 mm x 10 mm within 5.5 s is demonstrated.

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