Abstract #0172

Evaluation of the Longitudinal Relaxation Rate of Blood in Neonates.

Jill Britt De Vis¹, Jeroen Hendrikse¹, Nikki Dieleman¹, Floris Groenendaal², Karina J. Kersbergen², Linda S. de Vries², Manon J.N.L. Benders², Esben Thade Petersen¹

¹Radiology, University Medical Center Utrecht, Utrecht, Netherlands; ²Neonatology, Wilhelmina Children's Hospital, Utrecht, Netherlands

Neonatal MR imaging has distinct properties compared to adult MR imaging. Assumptions, used to quantify perfusion in an Arterial Spin Labeling MR experiment, may not hold true. In this study the longitudinal relaxation rate of blood was measured in a large cohort of neonates. In addition, the influence on perfusion quantification was evaluated and the relation with hematocrit was investigated.