Kornblum D, Zimmerman K
Radiol Technol. 1976 Jan-Feb;47(4):261-2.
To prevent leakage during the barium enemas the retention balloon is maintained in close apposition to the anorectal junction. This has been accomplished by using the counterpressure produced by simply allowing barium to flow into a small bag on the rectal tip adjacent to the anus.
为防止钡灌肠检查期间发生渗漏,保留气囊需紧贴肛管直肠交界处。这是通过利用简单地让钡剂流入肛门附近直肠末端的一个小袋所产生的反压来实现的。