Measurement of R1 dynamics using sliding window-DESPOT

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Abstract

Purpose: To measure longitudinal relaxation rate (R1) changes during contrast agent studies using a driven equilibrium single pulse observation of T1 (DESPOT) method with a sliding window (sw) acquisition. Materials and Methods: A sw-DESPOT technique was implemented that uses several three-dimensional (3D) image data sets to calculate R1 with a temporal resolution of only a single data set. Different sources of systematic errors were studied in simulations, and the technique was tested in a tumor-bearing mouse using an intravascular contrast agent. Results: Consistent concentration distributions of the CA were calculated with a temporal resolution of 10 s. Conclusion: Sw-DESPOT offers a precise and fast method to monitor the CA dynamics in 3D volumes. © 2009 Wiley-Liss, Inc.

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Schulz, J., Korn, M., Woenne, E. C., Umathum, R., Briel, A., Hengerer, A., … Bock, M. (2009). Measurement of R1 dynamics using sliding window-DESPOT. Journal of Magnetic Resonance Imaging, 30(5), 1163–1170. https://doi.org/10.1002/jmri.21946

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