This study is an interesting selection of esophageal dynamic images and respective activity/time curves to demonstrate motility ranging from normal to the opposite extreme (advancedstage achalasia). The technique employed was: 4-hour fast, with restriction of smoking, alcohol and caffeine products; anterior 0.5-second imaging during 2 minutes, covering the region from the mouth to the gastric fundus, followed by a planar 20-second image from the same region (normal transit time: < 10 seconds). The collection is based on a twenty-year experience employing a systematization including several parameters, which is able to discriminate patients with normal total esophageal transit time independently of symptoms.
Esophageal scintigraphy; Transit time; Motility; Achalasia; Parameters
