This paper puts forwards a practical way aimed at environmental impact assessment of construction items on basis of systematically classifivcation to deal with environmental favtors through identifying and bolting to ...This paper puts forwards a practical way aimed at environmental impact assessment of construction items on basis of systematically classifivcation to deal with environmental favtors through identifying and bolting to all kinds of environmental factors of construction items展开更多
Background Cerebral venous sinus thrombosis （CVST） is a special form of stroke with multiple causes and risk factors. However, there are still a portion of cases with unknown reasons. The aim of this study was to in...Background Cerebral venous sinus thrombosis （CVST） is a special form of stroke with multiple causes and risk factors. However, there are still a portion of cases with unknown reasons. The aim of this study was to investigate the relationship between internal jugular vein （IJV） abnormalities and the development of CVST. Methods A total of 51 CVST patients and 30 healthy controls were enrolled. The diameter, the maximum velocity （Vmax） and the reflux time in bilateral IJVs were measured by color Doppler flow imaging （CDFI）. The paired t test was used to compare the numeric values between the bilateral IJVs. The Pearson chi-square test was used to evaluate the relationship between IJV abnormality and CVST, IJV abnormality and IJV reflux, respectively. Results Among the 51 CVST patients, 20 （39%） patients were with normal IJV and 31 （61%） patients were with abnormal IJV. The types of IJV abnormality included annulus stenosis 19 cases （61%）, hypoplasia 9 cases （29%）, thrombosis 2 cases （7%） and anomalous valve 1 case （3%）. In patients with unilateral IJV abnormality, the minimum diameter of the IJV on the lesion side was significantly smaller than that of the contralateral side （P 〈0.0001）. When compared with contralateral side, the Vmax of the lesion side with unilateral annulus stenosis was significant higher, however, it was obvious lower in patients with unilateral hypoplasia （P 〈0.05）. Furthermore, among 27 cases with unilateral IJV abnormality, all the CYST occurred on the same side as the IJV lesions.展开更多
文摘This paper puts forwards a practical way aimed at environmental impact assessment of construction items on basis of systematically classifivcation to deal with environmental favtors through identifying and bolting to all kinds of environmental factors of construction items
基金This research was supported by grants from Research Fund for the Doctoral Program of Higher Education of China （No. 20111107120001） and National Natural Science Foundation of China （No. 81200912）.
文摘Background Cerebral venous sinus thrombosis （CVST） is a special form of stroke with multiple causes and risk factors. However, there are still a portion of cases with unknown reasons. The aim of this study was to investigate the relationship between internal jugular vein （IJV） abnormalities and the development of CVST. Methods A total of 51 CVST patients and 30 healthy controls were enrolled. The diameter, the maximum velocity （Vmax） and the reflux time in bilateral IJVs were measured by color Doppler flow imaging （CDFI）. The paired t test was used to compare the numeric values between the bilateral IJVs. The Pearson chi-square test was used to evaluate the relationship between IJV abnormality and CVST, IJV abnormality and IJV reflux, respectively. Results Among the 51 CVST patients, 20 （39%） patients were with normal IJV and 31 （61%） patients were with abnormal IJV. The types of IJV abnormality included annulus stenosis 19 cases （61%）, hypoplasia 9 cases （29%）, thrombosis 2 cases （7%） and anomalous valve 1 case （3%）. In patients with unilateral IJV abnormality, the minimum diameter of the IJV on the lesion side was significantly smaller than that of the contralateral side （P 〈0.0001）. When compared with contralateral side, the Vmax of the lesion side with unilateral annulus stenosis was significant higher, however, it was obvious lower in patients with unilateral hypoplasia （P 〈0.05）. Furthermore, among 27 cases with unilateral IJV abnormality, all the CYST occurred on the same side as the IJV lesions.
