The present invention provides a device and system useful as a new diagnostic modality to differentiate the etiology of heartburn/chest pain by measuring esophageal blood flow. Furthermore, the device and system of the present invention can be used as a new diagnostic modality to differentiate the etiology of abdominal pain by measuring blood in the wall of gastrointestinal tract including rectum and colon blood flow.
SYSTEM, DEVICE AND METHOD FOR MEASUREMENT OF ESOPHAGEAL WALL BLOOD PERFUSION