有关脑动静脉畸形的CT表现的描述错误的是()
A. 约80%平扫无阳性发现
B. 一般无占位表现
C. 一般不出现周围水肿现像
D. 表现为高、低密度混合灶
E. 约50%的动静脉畸形合并出血
小儿于生后出生时注射________,2个月始口服___________,3个月始注射__________、____、_______,8个月始注射________。
Information theory is related to the quantification of information. This was developed by Claude E. Shannon to who found fundamental limits on ( ) operations such as compressing data and on reliably storing and communicating data.
A. signal
B. data
C. information
D. signal processing
患者女,9岁,体重26kg,诊断为左前尺骨前段骨折,拟行切开复位、内固定术,术中需使用止血带。麻醉行神经阻滞时最宜采用()
A. 肌间沟入路臂丛神经阻滞
B. 肌间沟入路臂丛神经阻滞+正中神经阻滞
C. 肌间沟入路臂丛神经阻滞+桡神经阻滞
D. 锁骨上入路臂丛神经阻滞
E. 锁骨上入路臂丛神经阻滞+尺神经阻滞