To study the relationship between incidence and time course of traumatic intracerebral hematoma enlargement and that between hematoma irregular rate (IR) and hematoma enlargement after brain injury.Methods After brain...To study the relationship between incidence and time course of traumatic intracerebral hematoma enlargement and that between hematoma irregular rate (IR) and hematoma enlargement after brain injury.Methods After brain injury,164 cases with traumatic supratentorial intracerebral hematoma were examined by cranial CT scan within 72 hours thereafter reexamined 120 hours there after so as to compare the hematoma volumes (V1 and V2) and analyze the relation between hematoma IR and hematoma enlargement.Results After brain injury,enlargement of hematoma was confirmed in 70 cases (42.7%),in which the cutpoint for hematoma enlargement was determined as V2/V1=1.45 by using receiver operating characteristic curves (ROC).Hematoma IR had positive correlation with hematoma enlargement (r=0.857,P<0.01).Conclusion Since the incidence of traumatic hematoma enlargement is high,we can tell the possibility of hematoma enlargement based on hematoma IR in order to make a timely reexamination of CT scan and apply active treatments.7 refs,1 tab.展开更多
The authors have fabricated bottom gate amorphous silicon thin film transistor （a-Si TFT） array using five-step lithography process. The device shows a field effect mobility of 0.43 cm2/（V.s）, on/off ratio of 7.5&...The authors have fabricated bottom gate amorphous silicon thin film transistor （a-Si TFT） array using five-step lithography process. The device shows a field effect mobility of 0.43 cm2/（V.s）, on/off ratio of 7.5×10^6 and threshold voltage of 0.87 V. The instability of a-Si TFT is ascribed to the defect state in the a-Si channel and SiNx/a-Si interface. The present a-Si TFT array with SiNs insulator could be a significant step towards the commercialization of active matrix organic lighting diode （AM-OLED） technology.展开更多
文摘To study the relationship between incidence and time course of traumatic intracerebral hematoma enlargement and that between hematoma irregular rate (IR) and hematoma enlargement after brain injury.Methods After brain injury,164 cases with traumatic supratentorial intracerebral hematoma were examined by cranial CT scan within 72 hours thereafter reexamined 120 hours there after so as to compare the hematoma volumes (V1 and V2) and analyze the relation between hematoma IR and hematoma enlargement.Results After brain injury,enlargement of hematoma was confirmed in 70 cases (42.7%),in which the cutpoint for hematoma enlargement was determined as V2/V1=1.45 by using receiver operating characteristic curves (ROC).Hematoma IR had positive correlation with hematoma enlargement (r=0.857,P<0.01).Conclusion Since the incidence of traumatic hematoma enlargement is high,we can tell the possibility of hematoma enlargement based on hematoma IR in order to make a timely reexamination of CT scan and apply active treatments.7 refs,1 tab.
基金supported by the National High-Technology Research and Development Program of China(Grant Nos.2008AA03A336,2010AA03A337)
文摘The authors have fabricated bottom gate amorphous silicon thin film transistor （a-Si TFT） array using five-step lithography process. The device shows a field effect mobility of 0.43 cm2/（V.s）, on/off ratio of 7.5×10^6 and threshold voltage of 0.87 V. The instability of a-Si TFT is ascribed to the defect state in the a-Si channel and SiNx/a-Si interface. The present a-Si TFT array with SiNs insulator could be a significant step towards the commercialization of active matrix organic lighting diode （AM-OLED） technology.
