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High mobility and c-axis orientated ZnO thin films were deposited on glass substrates using RF sputtering method at room temperature. Structural properties of ZnO thin films were investigated by X-ray diffraction (XRD). Surface morphology and roughness were studied with scanning electron microscopy (SEM) and atomic force microscopy (AFM). Electrical(More)
Barrett's adenocarcinoma may occur in multiple sites, and recurrence and metachronous lesions are the major problems with endoscopic resection. Therefore, early detection of such lesions is ideal to achieve complete resection and obtain improved survival rates with minimally invasive treatment. Laser imaging systems allow multiple modalities of endoscopic(More)
BACKGROUND Crohn's disease (CD) strictures of the small intestine are a feared complication and difficult to treat because of difficulty gaining access to the stricture site. The development of double-balloon endoscopy (DBE) enabled access to the entire small intestine with interventional capabilities. The aim of this study was to assess the long-term(More)
Conventional endoscopy can miss flat early gastric cancers (0-IIb) because they may not be visible. We treated a patient with synchronous flat early gastric cancers missed by conventional white-light endoscopy (WLE). A 74-year-old Japanese male was referred for endoscopic submucosal dissection (ESD) of a depressed-type early gastric cancer (0-IIc) on the(More)
BACKGROUND AND AIMS The feasibility of endoscopic submucosal dissection (ESD) for large superficial colorectal tumors is undefined. The aim of this study was to assess the outcomes for patients undergoing ESD of superficial colorectal tumors larger than 50 mm. METHODS A total of 472 patients who underwent ESD for superficial colorectal tumors from 2010 to(More)
Background and study aims The pocket-creation method (PCM) is a novel strategy for endoscopic submucosal dissection (ESD). The aim of this study is to determine the efficacy of the PCM for colorectal laterally spreading tumors, non-granular type (LST-NG). Patients and methods The records of 126 consecutive patients with colorectal LST-NG who underwent ESD(More)
ZnO thin films were successfully grown on flexible plastic substrates using radio-frequency magnetron sputtering method at room temperature. The effects of the sputtering power on the quality of the ZnO films have been investigated. The results show that thin films were polycrystalline, with wurtzite structure and a strong preferred c-axis orientation(More)