Objectives: To measure phosphorus metabolites in human parotid glands by\n31P-MRS using three-dimensional chemical-shift imaging (3D-CSI), and ascertain\nwhether this method can capture changes in adenosine triphosphate\n(ATP) and phosphocreatine (PCr) levels due to saliva secretion. Study Design:\nThe parotid glands of 20 volunteers were assessed by 31P-MRS using\n3D-CSI on 3T MRI. After obtaining a first (baseline) measurement, the participants\ntook vitamin-C tablets and measurements were obtained twice\nmore, in a continuous manner.................
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