Quantification of gastric sleeve stenosis using endoscopic parameters and image analysis

Endoscopomics: quantifying the gut luminal size

“…This report by Yu et al 8 is a great first start, clearly warranting additional evaluation. One can easily envision the end result of these efforts: the ability to map in real time the size, shape, diameter, bends, angulation, and tortuosity of the GI tract as it is traversed by a flexible endoscope.…”

“…In "Quantification of gastric sleeve stenosis using endoscopic parameters and image analysis," a multidisciplinary group of bariatric surgeons and bariatric endoscopists from the University of Michigan used commercially available imaging processing software to characterize luminal stenosis after sleeve gastrectomy operations. 8 Images captured during upper endoscopy were retrospectively analyzed to identify the ratio of the widest and narrowest parts of the lumen as well as to determine the lumen angulation/trajectory required for passage of the endoscope. Notably, the diameter ratio correlated with endoluminal functional impedance planimetry (EndoFLIP, Medtronic, Fridley, Minn, USA) findings of dispensability index and gastric lumen morphology.…”

Endoscopic Operating Platforms and Advancements

“…23 EndoFLIP has also been successfully used to measure gastric lumen diameter in gastric peroral endoscopic pyloromyotomy and gastric sleeve stenosis. 23,24 Application of the EndoFLIP has also been studied as a means to prevent post fundoplication dysphagia, using intraoperative DI to predict postoperative symptoms. 25 With applications both in diagnosis and in predicting clinical outcomes, this novel technology is an incredibly useful endoscopic tool.…”

Objective assessment of luminal diameter and distensibility by an impedance planimetry system before and after pneumatic dilation in gastric sleeve stenosis

“…This technology is being investigated in GSS as a means of quantifying severity of stenosis. 3 Impedance planimetry systems have also proven their initial utility in predicting response to treatment. 4 Here, we demonstrate the use of impedance planimetry as a means of objective assessment of gastric luminal diameter and distensibility before and after pneumatic dilation ( Video 1 , available online at www.giejournal.org ).…”