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唐鹤菡, 宋彬, 黄子星, 等. 红茶作为口服阴性对比剂在磁共振胰胆管成像中的应用[J]. koko体育app 学报（医学版）, 2013, 44(3): 476-480.
引用本文: 唐鹤菡, 宋彬, 黄子星, 等. 红茶用作服用呈阴性相对较剂在磁振动胰胆管成相中的适用[J]. 湖北社会学报（医学专业版）, 2013, 44(3): 476-480.
TANG He-han, SONG Bin, HUANG Zi-xing, et al. Application of Black Tea as a Negative Oral Contrast in Magnetic Resonance Cholangiopancreatography (MRCP)[J]. Journal of Sichuan University (Medical Sciences), 2013, 44(3): 476-480.
Citation: TANG He-han, SONG Bin, HUANG Zi-xing, et al. Application of Black Tea as a Negative Oral Contrast in Magnetic Resonance Cholangiopancreatography (MRCP)[J]. Journal of Sichuan University (Medical Sciences), 2013, 44(3): 476-480.

红茶作为口服阴性对比剂在磁共振胰胆管成像中的应用

Application of Black Tea as a Negative Oral Contrast in Magnetic Resonance Cholangiopancreatography (MRCP)

  • 摘要: 目的 探讨利用红茶降低胃肠道液体对磁共振胰胆道成像(MRCP)干扰的可行性。 方法 研究分为3个部分:①体外试管试验:MRCP、T2-map及T1-map分别扫描15种不同饮料,得到最适合用于降低胃肠道对MRCP成像影响的饮料。②纳入10例健康志愿者,在口服饮料前及口服后5 min、10 min、15 min进行MRCP扫描,得到最佳延迟时相。③纳入20例患者,在饮茶前及饮茶后5 min进行MRCP扫描,测得胃、十二指肠、肝脏、胆总管、胰管、胆囊的信号值(SI)、信噪比(SNR)及喝茶前后胃、十二指肠的信号丢失,肝内胆管、肝管、胆总管、胰管、胆囊、胆胰壶腹部的图像质量改变。 结果 ①体外试管试验显示最适用的饮料为立顿红茶。②健康志愿者试验发现,胃、十二指肠信号丢失的评价及胆道系统图像质量的评价在饮茶后5 min、10 min、15 min之间差异无统计学意义(P>0.05)。③对患者的研究显示,饮茶前后胃、十二指肠的SI、SNR及信号的丢失,胆总管、胰管、胆囊及胆胰壶腹部的图像质量评价差异有统计学意义(P<0.05),但饮茶前后肝内胆管、肝管的图像质量,肝脏、胆总管、胰管、胆囊的SI及SNR差异无统计学意义(P>0.05)。 结论 作为一种简便、廉价、安全的饮料,立顿红茶能降低胃肠道液体对MRCP成像的干扰,可广泛应用于临床。  
    Abstract: Obiective To investigate the feasibility of using black tea as a gastrointestinal oral negative contrast agent to null the signal from fluid in bowel during MR cholangiopancreatography (MRCP). Methods ① 15 different drinks were scanned with MRCP, T2-map and T1-map in vitro to identify the most suitable drink for MRCP. ② 10 volunteers were scanned by MRCP prior to and 5, 10, 15 min after tea consumptions to identify the optimal delay time. ③ 20 patients were scanned with MRCP prior to and 5 min after tea consumptions. The signal intensity (SI) and signal-to-noise ratio (SNR) of stomach, duodenum, liver-parenchyma, common bile duct (CBD), pancreatic duct (PD) and gall bladder (GB); the singal loss of stomach and duodenum; and the image quality of ampulla of vater (AV), intrahepatic ducts (IHD), hepatic duct, CBD, PD and GB were analyzed with Siemens Workstation. Results ①Lipton black-tea was identified as the optimal drink in vitro. ② There were no significant differences in MRCP among the 3 delay times in volunteer tests. ③ The SI, SNR and SI loss of stomach and duodenum, and the image quality of CBD, PD, GB and AV showed a significant improvement of MRCP after tea consumptions (P<0.05). But tea consumptions made no significant differences in the image quality of IHD and hepatic duct, and the SI and SNR of liver, CBD, GB and PD (P>0.05). Conclusion As a simple, cheap and safe drink, black tea can be widely used to reduce signal intensity of gastrointestinal tract and provide improved image of MRCP.  
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