[Comparison of two gastric cancer screening schemes in a high-risk population].

Objective: To evaluate the effects of two gastric cancer screening schemes for early detection of gastric cancer in a high-risk population.

Methods: A cluster random sampling method was used to select local residents aged 40-69 years from Linqu County, Shandong Province. "Serum pepsinogen initial screening combined with further endoscopic examination (PG scheme)" and "direct endoscopic examination (endoscopy scheme)" were conducted.

[The effect of the metallic dental materials on magnetic resonance imaging].

Objective: To explore the influence of conventional metal materials in oral cavity on brain magnetic resonance imaging (MRI).

Methods: Four kinds of metal materials (metal ligature wire, forging hard and slotless denture, casting nichrome denture, casting copper alloy denture) in oral cavity were scanned through MRI. FSE sequence T1 weighted imaging (FSE T1), EPI diffusion-weighted imaging (DWI) sequence of ordinary, Propeller DWI imaging were used.

[Effect of periodontitis on circulating C-reactive protein in type 2 diabetes patients].

Objective: To investigate the effect of periodontal infection on circulating C-reactive protein (CRP) in type 2 diabetes patients.

Methods: 32 diabetes patients with advanced periodontitis participated in this study. They were compared to a group of 32 diabetes patients without periodontal disease, who were mathed with regard to age (+/- 3 years), gender and body mass index (+/- 1 kg/m2).