Abstract
Objective
Evaluation of the efficacy of black tea as the negative oral contrast agent in MRCP.
Materials and methods
MRCP was performed before and 5 and 15 min after tea consumption for 35 patients. Depiction of the gall bladder (GB), cystic duct (CD), proximal and distal parts of the common bile duct (CBD), intrahepatic ducts (IHD), ampulla of vater (AV), main pancreatic duct (MPD) and signal loss of stomach and three different segments of the duodenum were investigated according to VAS and Likert scores.
Results
Twenty-one of the patients (60%) were female (mean age, 50.3 ± 19.2 years). Regarding visibility of different anatomical parts of the pancreatobiliary tree, the post procedure images were better visualized in the distal part of CBD, AV and MPD in Likert and VAS scoring (all P ≤ 0.001). Regarding obliteration of high signal in the stomach and three different parts of the duodenum, all post procedure images showed significant disappearance of high signal in Likert and VAS scoring systems (all Ps ≤ 0.001).
Conclusion
Black tea is a simple and safe negative oral contrast agent which reduces the signal intensity of gastrointestinal tract fluid and provides improved depiction of the MPD, the distal CBD and the ampulla during MRCP.
Key Points
•Tea is an effective negative oral contrast agent for gastrointestinal MRI
•Ingestion of black tea improves conspicuity of the distal CBD in MRCP
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References
Pilleul F, Courbière M, Henry L et al (2004) La cholangio-IRM dans le diagnostic étiologique des stenosis biliaires: corrélation anatomopathologique. J Radiol 85:25–30
Hoeffel C, Azizi L, Lewin M et al (2006) Normal and pathologic features of the postoperative biliary tract at 3D MR cholangiopancreatography and MR imaging. Radiographics 26:1603–1620
Yu J, Turner MA, Fulcher AS et al (2006) Congenital anomalies and normal variants of the pancreaticobiliary tract and the pancreas in adults: part 1, biliary tract. AJR Am J Roentgenol 187:1536–1543
Yu J, Turner MA, Fulcher AS et al (2006) Congenital anomalies and normal variants of the pancreaticobiliary tract and the pancreas in adults: part 2, pancreatic duct and pancreas. AJR Am J Roentgenol 187:1544–1553
Arrivé L, Coudray C, Azizi L et al (2007) Pineapple juice as a negative oral contrast agent in magnetic resonance cholangiopancreatography. J Radiol 88(11 Pt 1):1689–1694
Coppens E, Metens T, Winant C et al (2005) Pineapple juice labeled with gadolinium: a convenient oral contrast for magnetic resonance cholangiopancreatography. Eur Radiol 15:2122–2129
Matos C, Metens T, Devière J et al (1997) Pancreatic duct: morphologic and functional evaluation with dynamic MR pancreatography after secretin stimulation. Radiology 203:435–441
Hirohashi S, Hirohashi R, Uchida H et al (1997) MR cholangiopancreatography and MR urography: improved enhancement with a negative oral contrast agent. Radiology 203:281–285
Bernardino MR, Weinreb JC, Mitchell DG et al (1994) Safety and optimum concen- tration of a manganese chloride based oral MR contrast agent. J Magn Res Imag 4:872–876
Schreiber WE (1989) Iron, porphyrin and bilirubin metabolism. In: Kaplan LA, Pesce AJ (eds) Clinical chemistry: theory, analysis. Mosby, St. Louis, pp 496–511
Varavithya V, Phongkitkarun S, Jatchavala J et al (2005) The efficacy of roselle (Hibicus sabdariffa Linn.) flower tea as oral negative contrast agent for MRCP study. J Med Assoc Thai 88(Suppl 1):S35–S41
Weisburger JH (1997) Tea and health: a historical perspective. Cancer Lett 114:315–317
Wróbel K, Wróbel K, Urbina EM (2000) Determination of total aluminum, chromium, copper, iron, manganese, and nickel and their fractions leached to the infusions of black tea, green tea, Hibiscus sabdariffa, and Ilex paraguariensis (mate) by ETA-AAS. Biol Trace Elem Res 78:271–280
Kato J, Kawamura Y, Watanabe T et al (2001) Examination of intra-gastrointestinal tract signal elimination in MRCP: combined use of T(1)-shortening positive contrast agent and single-shot fast inversion recovery. J Magn Reson Imaging 13:738–743
Wewers ME, Lowe NK (1990) A critical review of visual analogue scales in the measurement of clinical phenomena. Res Nurs Heal 13:227–236
Riordan RD, Khonsari M, Jeffries J et al (2004) Pineapple juice as a negative oral contrast agent in magnetic resonance cholangiopancreatography: a preliminary evaluation. Br J Radiol 77:991–999
Kim YK, Kim CS, Lee JM et al (2006) Value of adding T1-weighted image to MR cholangiopancreatography for detecting intrahepatic biliary stones. AJR Am J Roentgenol 187:W267–W274
Broglia L, Tortora A, Maccioni F et al (1999) Optimization of dosage and exam technique in the use of oral contrast media in magneticresonance. Radiol Med 97:365–370
Papanikolaou N, Karantanas A, Maris T et al (2000) MR cholangiopancreatography before and after oral blueberry juice administration. J Comput Assist Tomogr 24:229–234
Chan JH, Tsui EY, Yuen MK et al (2000) Gadopentetate dimeglumine as an oral negative gastrointestinal contrast agent for MRCP. Abdom Imaging 5:05–08
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Ghanaati, H., Rokni-Yazdi, H., Jalali, A.H. et al. Improvement of MR cholangiopancreatography (MRCP) images after black tea consumption. Eur Radiol 21, 2551–2557 (2011). https://doi.org/10.1007/s00330-011-2217-0
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DOI: https://doi.org/10.1007/s00330-011-2217-0