Methods: In 23 patients with chronic functional constipation and 20 normal persons, total and segmental colon transit time (CTT) were determined by using radiopaque marks and calculated the transit index (TI).

• 方法:应用不透X线标志物对23例慢性功能性便秘患者(便秘组)和20例非便秘患者(对照组)进行结肠运输检查,测定全肠道通过时间和结肠分段通过时间,计算运输指数;