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- W2353075344 abstract "Objective To evaluate the efficacy of a kind of Chinese tea (Rizhao green tea) administration as an oral negative contrast agent for magnetic resonance cholangiopancreatography (MRCP) studyso as to provide an ideal negative contrast agent which is natural, safe, inexpensive and palatable; and to assist MRCP analysis for further development of. Methods MR imaging of phantoms comprising cylinders of tea at various concentrations and water as a control were performed under the identical scanning sequence to compare the effect of tea concentration on the image signal. MRCP was subsequently performed in 17 selected volunteers, before and after ingestion of tea. Quantitative and qualitative comparison between pre- and post-tea oral administration was obtained systematically. Results The various tea concentrations resulted in differ- ent outcomes in terms of signal intensity and clarify. High manganese concentration of 12.04 mg/L was detected in the optimum tea dosage. In contrast to water, tea decreased the T2 relaxation time of the fluid in the stomach and duodenum. The intraluminal signal of the gastrointestinal tract on T2W imaging was reduced, due to the paramagnetic prop- erties of high manganese content in tea. There was statistically significantly (p 0.05) improvement in conspicuity of the common bile duct and main pancreatic duct after tea ingestion. Conclusion Tea ,as a natural drinking ,is safe, no side effect, no irritation, no fermentation and gas generation. It can adequately fill the gastrointestinal duct and result in consistent MR signals. No clinical trial has to perform before application of tea as an oral negative contrast agent for MRCP. Therefore, tea is an ideal oral negative contrast agent in MRCP." @default.
- W2353075344 created "2016-06-24" @default.
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- W2353075344 date "2008-01-01" @default.
- W2353075344 modified "2023-09-26" @default.
- W2353075344 title "Clinical application of Chinese tea as an oral negative contrast agent for MRCP" @default.
- W2353075344 hasPublicationYear "2008" @default.
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