1.The value of multi-slice computer tomography and postprocessing techniques in diagnosis of the intestinal obstruction
Yabi ZHU ; Liming LIN ; Hongguang LI ; Wangyue WANG ; Guanglan CHEN
Chinese Journal of Digestion 2010;30(10):750-753
Objective To explore the diagnostic value of multi-slice computer tomography (MSCT) in cause and location of agnogenic intestinal obstruction. Methods With light speed 16 multiple slice spiral-CT, 68 patients clinically suggested intestinal obstruction were underwent plain scan and second phase enhanced scan in whole abdomen. The image data was post-processed through GEADW4. 4 station with multi-planar reconstruction (MPR) and maximum intensity projection (MIP). The CT image characters of agnogenic intestinal obstruction were analyzed by comparing CT image suggestions with operation findings. Results MSCT clearly indicate the location, cause and severity of intestinal obstruction, and the diagnose accordance rate with operation findings was 95.6 % (65/68). Conclusions MSCT is a quick, simple and effective means for diagnosis of the location,causes and severity of agnogenic intestinal obstruction. It could provide an important clue for the doctors when making clinical decisions.
2.Association between air pollutants and digestive system cancers: a systematic review
Cuihong YANG ; Wentao GU ; Yubing SHEN ; Luwen ZHANG ; Wangyue CHEN ; Jingmei JIANG
Journal of Public Health and Preventive Medicine 2023;34(4):1-6
Objective To understand the relationship between air pollutants and digestive system cancers, and to provide a reference for future research and prevention and control of digestive system cancer. Methods All relevant literature published in English between 1970-2022 was searched through the databases of PubMed, web of science and Embase, and meta-analysis was used to explore the effects of specific air pollutants on digestive system cancers. Results PM2.5 was able to increase the risk of incidence or mortality of total digestive cancers by 11% (1.05 to 1.17). For specific cancers, PM2.5 was only associated with an increased risk of liver cancer in this study, with a combined RR (95% CI) of 1.31 (1.19 to 1.46), while there was no statistically significant association with other specific digestive cancers ( P>0.05). NO2 increased the risk of incidence or mortality of total digestive cancers by 3% (1.00 to 1.07). Conclusion For specific digestive system cancers, PM2.5 has the most pronounced effect on liver cancer. More evidence is needed to support the relationship between NO2 and cancer. Currently, it has been observed that NO2 has a negative effect on overall digestive cancers. This study provides insights for the prevention and control of digestive system cancer in countries and regions with high PM2.5 and NO2 concentrations.