The Correlation Between F-Fluorodeoxyglucose-Positron Emission Tomography/Computed Tomography Semiquantitative Parameters and the Clinical Features and Pathological Biological Indexes of Gastric Cancer.

This study explored the application value of the maximum standard uptake value (SUV) of F-fluorodeoxyglucose-positron emission tomography/computed tomography (F-FDG PET/CT) in gastric cancer. Data of 164 patients with gastric cancer who had undergoneF-FDG PET/CT before a biopsy were collected, and the correlation of SUV with clinical stage, pathological differentiation degree, human epidermal growth factor receptor-2 (HER-2) status, and Ki-67 index of gastric cancer was analyzed. The SUV of poorly differentiated adenocarcinoma was significantly higher than that of moderately differentiated adenocarcinoma and signet-ring cell carcinoma ( < 0.

[Characteristics of VOCs Pollution in the Winter Atmosphere of a Typical Petrochemical Industry Park].

Concentrations of volatile organic compounds (VOCs) in ambient air of a typical petrochemical industry park were measured using an on-line monitor (TH-300B) from December 2014 to February 2015. The composition, temporal variations, sources, and photochemical reactivity of VOCs were analyzed. Alkanes were the most abundant VOC species and contributed to 86.