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AJNR - American Journal of Neuroradiology

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Monitoring of Gustatory Stimulation of Salivary Glands by Diffusion-Weighted MR Imaging: Comparison of 1.5T and 3T

C.R. Habermann^a, P. Gossrau^a, H. Kooijman^c, J. Graessner^d, M.C. Cramer^a, M.G. Kaul^a, F. Reitmeier^b, M. Jaehne^b and G. Adam^a

^a Departments of Diagnostic and Interventional Radiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
^b Departments of Oto-, Rhino-, Laryngology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
^c Philips Medical Systems, Best, The Netherlands
^d Siemens Medical Solutions, Hamburg, Germany

View larger version (59K): [in this window] [in a new window]   Fig 1. ADC image of a 29-year-old male volunteer before stimulation with lemon juice by using 1.5T (A). B, ADC measurement by placing a region of interest that contains the entire parotid gland. C, ADC image acquired by using 3T. Arrows in A and C show the left parotid gland.

View larger version (15K): [in this window] [in a new window]   Fig 2. Box plots demonstrate the increase of ADC at 1.5T after stimulation with lemon juice for the right and left parotid gland and the consumption by both glands by using a region of interest that contains the entire parotid gland visible on every section.

View larger version (15K): [in this window] [in a new window]   Fig 3. Box plots demonstrate the increase of ADC at 3T after stimulation with lemon juice for the right and left parotid glands and the consumption by both glands by using a region of interest that contains the entire parotid gland visible on every section.

View larger version (12K): [in this window] [in a new window]   Fig 4. Box plots demonstrate the high correlation of compared field strengths pre- and poststimulation (r = 0.955, and 0.936 respectively).