Mieke Bus

34 Chapter 3 Material and Methods Literature search A literature search was conducted (May 22, 2014) in PubMed and Cochrane library using as search terms: “Upper Urinary Tract OR ureter AND Narrow Band Imaging”, “Upper Urinary Tract OR ureter AND Photodynamic Diagnosis”, “Upper Urinary Tract OR ureter AND Storz Pro- fessional Imaging Enhancement System (SPIES)”, “Upper Urinary Tract OR ureter AND Optical Coherence Tomography” and “Upper Urinary Tract OR ureter AND Confocal Laser Endomi- croscopy”. Original English written articles were selected. Review articles, reply to author and articles describing other than upper urinary tract were excluded (Figure 1). Exclusion criteria: •Author replys (0) •Review (4) •Other than upper urinary tract (4) •Other than diagnostic studies (1) •Studies on ureterstents (3) Results: 37 After screening title and abstract for exclusion criteria: 11 “Upper Urinary Tract AND Optical Coherence Tomography”, “Ureter AND Optical Coherence Tomography”,“Upper Urinary Tract AND Narrow Band Imaging”, “Ureter AND Narrow Band Imaging”, “Upper Urinary Tract AND Storz Professional Imaging Enhancement System, “Ureter AND Storz Professional Imaging Enhancement Stystem”, “Upper Urinary Tract AND Confocal Laser Endomicroscopy, Ureter AND Confocal Laser Endomicroscopy” and “Upper Urinary Tract AND Photodynamic Diagnosis”, “Ureter AND Photodynamic Diagnosis”. After undoubling: 26 Filters: Text availability • No full text availability (0) Language • No English (3) NBI: 1 OCT: 3 CLE: 1 PDD: 3 Double articles:11 After filtering: 23 Animal studies: 3 Human studies: 8 OCT: 3 CLE: 0 PDD: 0 NBI: 0 SPIES: 0 SPIES: 0 Figure 1: Diagram outlining study selection process.