BACKGROUND The incidence and mortality of lung cancer have increased annually.Accurate diagnosis can help improve therapeutic efficacy of interventions and prognosis.Percutaneous lung biopsy is a reliable method for t...BACKGROUND The incidence and mortality of lung cancer have increased annually.Accurate diagnosis can help improve therapeutic efficacy of interventions and prognosis.Percutaneous lung biopsy is a reliable method for the clinical diagnosis of lung cancer.Ultrasound-guided percutaneous lung biopsy technology has been widely promoted and applied in recent years.AIM To investigate the diagnostic value of contrast-enhanced ultrasound(CEUS)-guided percutaneous biopsy in peripheral pulmonary lesions.METHODS We retrospectively collected data on 237 patients with peripheral thoracic focal lesions who underwent puncture biopsy at Wuxi People’s Hospital.The patients were randomly divided into two groups:The CEUS-guided before lesion puncture group(contrast group)and conventional ultrasound-guided group(control group).Analyze the diagnostic efficacy of the puncture biopsy,impact of tumor size,and number of puncture needles and complications were analyzed and compared between the two groups.RESULTS Accurate pathological results were obtained for 92.83%(220/237)of peripheral lung lesions during the first biopsy,with an accuracy rate of 95.8%(113/118)in the contrast group and 89.9%(107/119)in the control group.The difference in the area under the curve(AUC)between the contrast and the control groups was not statistically significant(0.952 vs 0.902,respectively;P>0.05).However,when the lesion diameter≥5 cm,the diagnostic AUC of the contrast group was higher than that of the control group(0.952 vs 0.902,respectively;P<0.05).In addition,the average number of puncture needles in the contrast group was lower than that in the control group(2.58±0.53 vs 2.90±0.56,respectively;P<0.05).CONCLUSION CEUS guidance can enhance the efficiency of puncture biopsy of peripheral pulmonary lesions,especially for lesions with a diameter≥5 cm.Therefore,CEUS guidance has high clinical diagnostic value in puncture biopsy of peripheral focal lung lesions.展开更多
The effect of cooling rate on the magnetic properties of the Fe53Nd37Al10 alloy prepared by different methods, i.e., suction casting and melt spinning at different rates, was investigated. The Fe53Nd37Al10 ribbon at t...The effect of cooling rate on the magnetic properties of the Fe53Nd37Al10 alloy prepared by different methods, i.e., suction casting and melt spinning at different rates, was investigated. The Fe53Nd37Al10 ribbon at the wheel speed of 5 m.s-1 exhibits the highest coercivity in the samples. Two hard magnetic phases are detected from the hysteresis loops of the 5 m.s-1 ribbon at all temperatures below room temperature. Their appearance is associated with different exchange coupling interactions, which are between the two kinds of hard magnetic phases or between the hard magnetic phase and the soft magnetic phase.展开更多
Objective To explore the association between induced abortion and tubal infertility in Chengdu, China.Methods A 1 ： 2 case-control study was designed. Infertile women with bilateral tubal occlusion in the case group ...Objective To explore the association between induced abortion and tubal infertility in Chengdu, China.Methods A 1 ： 2 case-control study was designed. Infertile women with bilateral tubal occlusion in the case group compared with two control groups： infertile control group with bilateral tubal patency and pregnant control group with currently pregnancy. Data were collected using questionnaires through face-to-face interviews, covering the subjects＇ demographic details and histories of gynecology and obstetrics. Adjusted odds ratio was calculated as a measure of the association using stepwise multiple logistic regression analysis.Results Induced abortion was not found to be associated with tubal infertility in the analysis including either the infertile controls or the pregnant controls, but other risk factors were found, such as history of acute pelvic inflammatory disease （PID）, lower abdominal surgeries, dysmenorrhea and pregnancy.Conclusion It is contended that facing an increasing trend of infertile cases with tubal occlusion in China, it is emphasized that special attention should paid to the long term impact of reproductive tract infection, especially, asymptomatic ones, rather than induced abortion.展开更多
基金the Ethic Committee of Wuxi People's Hospital(No.KY17071).
文摘BACKGROUND The incidence and mortality of lung cancer have increased annually.Accurate diagnosis can help improve therapeutic efficacy of interventions and prognosis.Percutaneous lung biopsy is a reliable method for the clinical diagnosis of lung cancer.Ultrasound-guided percutaneous lung biopsy technology has been widely promoted and applied in recent years.AIM To investigate the diagnostic value of contrast-enhanced ultrasound(CEUS)-guided percutaneous biopsy in peripheral pulmonary lesions.METHODS We retrospectively collected data on 237 patients with peripheral thoracic focal lesions who underwent puncture biopsy at Wuxi People’s Hospital.The patients were randomly divided into two groups:The CEUS-guided before lesion puncture group(contrast group)and conventional ultrasound-guided group(control group).Analyze the diagnostic efficacy of the puncture biopsy,impact of tumor size,and number of puncture needles and complications were analyzed and compared between the two groups.RESULTS Accurate pathological results were obtained for 92.83%(220/237)of peripheral lung lesions during the first biopsy,with an accuracy rate of 95.8%(113/118)in the contrast group and 89.9%(107/119)in the control group.The difference in the area under the curve(AUC)between the contrast and the control groups was not statistically significant(0.952 vs 0.902,respectively;P>0.05).However,when the lesion diameter≥5 cm,the diagnostic AUC of the contrast group was higher than that of the control group(0.952 vs 0.902,respectively;P<0.05).In addition,the average number of puncture needles in the contrast group was lower than that in the control group(2.58±0.53 vs 2.90±0.56,respectively;P<0.05).CONCLUSION CEUS guidance can enhance the efficiency of puncture biopsy of peripheral pulmonary lesions,especially for lesions with a diameter≥5 cm.Therefore,CEUS guidance has high clinical diagnostic value in puncture biopsy of peripheral focal lung lesions.
基金supported by the National Natural Science Foundation of China(No.51001066)
文摘The effect of cooling rate on the magnetic properties of the Fe53Nd37Al10 alloy prepared by different methods, i.e., suction casting and melt spinning at different rates, was investigated. The Fe53Nd37Al10 ribbon at the wheel speed of 5 m.s-1 exhibits the highest coercivity in the samples. Two hard magnetic phases are detected from the hysteresis loops of the 5 m.s-1 ribbon at all temperatures below room temperature. Their appearance is associated with different exchange coupling interactions, which are between the two kinds of hard magnetic phases or between the hard magnetic phase and the soft magnetic phase.
基金supported by the Special Programme of Research, Development, and Research Training in Human Reproduction, World Health Organization (Project 96809)
文摘Objective To explore the association between induced abortion and tubal infertility in Chengdu, China.Methods A 1 ： 2 case-control study was designed. Infertile women with bilateral tubal occlusion in the case group compared with two control groups： infertile control group with bilateral tubal patency and pregnant control group with currently pregnancy. Data were collected using questionnaires through face-to-face interviews, covering the subjects＇ demographic details and histories of gynecology and obstetrics. Adjusted odds ratio was calculated as a measure of the association using stepwise multiple logistic regression analysis.Results Induced abortion was not found to be associated with tubal infertility in the analysis including either the infertile controls or the pregnant controls, but other risk factors were found, such as history of acute pelvic inflammatory disease （PID）, lower abdominal surgeries, dysmenorrhea and pregnancy.Conclusion It is contended that facing an increasing trend of infertile cases with tubal occlusion in China, it is emphasized that special attention should paid to the long term impact of reproductive tract infection, especially, asymptomatic ones, rather than induced abortion.
