Eg l600zw7

All procedures were carried out with optical magnifying endoscopes (EG‐L600ZW7; Fujifilm Corporation, Tokyo, Japan) and the endoscope video system (LASEREO 7000 series; Fujifilm Corporation). In the blue laser imaging mode, the structure enhancement function was fixed at the B6 level, with the color mode fixed at level 1. To obtain well‐focused magnifying endoscopic images of the lesion easily, we attached a black soft hood (MAJ‐1989; Olympus Medical Systems, Tokyo, Japan) on the tip of the scope and used water immersion technique with maximal magnification during the M‐BLI procedure. In addition, we usually used the antiperistaltic agent to obtain well‐focused magnifying endoscopic images of the lesion. We selected spraying l‐menthol into the stomach or intravenous injection of scopolamine butylbromide or glucagon. The level of maximal magnification was set at high (three white blocks, about 115×) or maximum (four white blocks, 145×) magnifications on 26‐in. monitor, and a scale in 1‐mm increments was visualized at 115× or 145× magnifications prior to examination (Fig. S1). All endoscopic investigations involving M‐BLI were performed by H. U., a skilled endoscopist accredited by the Japan Gastroenterological Endoscopy Society.

We used the electronic gastroscope system GIH-Q260H (Olympus Corporation, Tokyo, Japan), EG-L600ZW7 (Fujifilm Corporation, Tokyo, Japan), high-resolution esophageal manometric system ZAN-S61C01E (Sandhill Scientific, Inc., Colorado, USA), 24-h esophageal MII–pH monitoring system A089022B (Sandhill Scientific, Inc., Colorado, USA), and endoscopic radiofrequency equipment MER-200GA (Medi Corporation, Heilongjiang, China).