Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The method to estimate the bolus volume in the esophagus after swallowing. We first outlined the profile of the bolus in the esophagus to get the bolus area and the intensity by ImageJ (left). Next, we measured the empty esophagus intensity in the same area after bolus was propelled through it (right). These measurements were used to calculate the volume.
