Ultrasonography with liquid type CalorieMate^® for gallbladder motility

Abstract

We usually use yolks to assess gallbladder motility by ultrasonography. In this study, we evaluated liquid type CalorieMate^® as a simple oral stimulus instead of yolks. The volunteers (n=27) underwent ultrasonography before, 30 min after, and 60min after taking liquid type CalorieMate^®. Gallbladder volume and the ejection fraction were measured by ellipsoid method. The mean fasting gallbladder volume, 30-min ejection fraction, and 60-min one were 13.5 ml, 53%, and 62%, respectively. These results were similar to the previous reports by yolks. If the fasting volume is lower than 4 ml, they should take re-examination after longer fast to reduce the influence of the dinner the day before the exam. In conclusion, liquid type CalorieMate^® is useful stimulus to assess gallbladder motility.