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lüll Functional oesophago-gastric junction imaging McMahon BP; Drewes AM; Gregersen HWorld J Gastroenterol 2006[May]; 12 (18): 2818-24Despite its role in disease there is still no definitive method to assess oesophago-gastric junction competence (OGJ). Traditionally the OGJ has been assessed using manometry with lower oesophageal sphincter pressure as the indicator. More recently this has been shown not to be a very reliable marker of sphincter function and competence against reflux. Disorders such as gastro-oesophageal reflux disease and to a lesser extend achalasia still effects a significant number of patients. This review looks at using a new technique known as impedance planimetry to profile the geometry and pressure in the OGJ during distension of a bag. The data gathered can be reconstructed into a dynamic representation of OGJ action. This has been shown to provide a useful representation of the OGJ and to show changes to the competence of the OGJ in terms of compliance and distensibility as a result of endoluminal therapy.|Biomechanical Phenomena[MESH]|Diagnostic Imaging/instrumentation/*methods[MESH]|Electric Impedance[MESH]|Esophageal Achalasia/pathology/physiopathology[MESH]|Esophagogastric Junction/innervation/*pathology/*physiology[MESH]|Fluoroscopy/methods[MESH]|Gastroesophageal Reflux/pathology/physiopathology[MESH]|Humans[MESH]|Manometry[MESH]|Pressure[MESH] |