The treatment of long benign oesophageal strictures remains a clinical challenge. We present a novel endoscopic technique that involves visualising scar tissue using methylene blue-stained saline, ...

Abstract: Considering the presence of switching devices, a pulse-width modulation (PWM) dc–dc converter is a piecewise smooth switching system that causes difficulties in stability analysis and ...

If you have a tumor or a lesion within the lining of your gastrointestinal tract, your doctor may recommend removing it with a procedure called endoscopic submucosal dissection. Endoscopic submucosal ...

Abstract: For indirect contrast enhancement, researchers have proposed various transformation functions based on histogram equalization and gamma correction. However, these transformation functions ...