Abstract #3625

Measuring Blood T1 in the Jugular Vein: Juggling Size, Speed and Precision

Qin Qin¹, Peter CM. van Zijl¹

¹Department of Radiology and Radiological Science, Johns Hopkins University, Baltimore, MD, USA

Knowledge of blood T1 is important for quantification of CBF using ASL, for setting the inversion time in VASO, and for determining kinetic parameters using dynamic contrast-enhanced MRI. Here, T1 of internal jugular vein at 3T was measured using a fast-inversion-recovery technique in which multiple inversion time points can be acquired rapidly due to constant refreshing of blood. An interesting finding was that of a significant difference (P<0.05) between men, and women, namely T1=171862ms (n=6) and T1=191155ms (n=6), respectively.