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Abstract #4693

Optimizing MR acquisition time for dynamic pituitary gland evaluation utilizing GRASP

Camilla Rossi Espagnet 1 , Lev Bangiyev 1 , Kai Tobias Block 2 , Robert Grimm 3 , Fernando Boada 2 , Timothy Shepherd 1 , David Chen 2 , James Babb 2 , and Girish Fatterpekar 1

1 Neuroradiology, NYULMC, New York, NY, United States, 2 Radiology, NYULMC, New York, NY, United States, 3 Pattern Recognition Lab, FAU, Erlangen, Nuremberg, Germany

Purpose of this study is to evaluate signal-time curves (STC) utilizing GRASP to optimize acquisition time (TA) for dynamic pituitary evaluation. STCs generated from normal appearing anterior pituitary gland and microadenomas in 20 patients evaluated peak enhancement at 60 seconds and then every 10 seconds. There was no significant change in peak enhancement of anterior pituitary gland 90 seconds after administration of contrast. Also, a significant difference in peak enhancement between microadenoma and anterior pituitary gland could be consistently measured during this time. Our findings demonstrate that 90 second TA is sufficient to provide optimal dynamic evaluation of pituitary gland.

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