Review of System - 系统检查(4)

Ultrasonography is useful in locating tumors of the lung and abdominal cavity. It employs ultra high frequency sound waves to form television images of internal organs. Because it produces no radiation, ultrasound is sometimes used during pregnancy to determine the size and position of the fetus.
Both the heart muscle and the nervous system produce electrical impulses that can be measured with special machines. The electrocardiograph (ECG) is useful for diagnosing certain heart conditions. With electrodes taped to a person’s chest, the electrical activity of the heart can be recorded while the patient is either resting or performing some activity, such as walking on a treadmill. The electroencephalogram (EEG) measures the electrical activity of the brain through electrodes attached to the head. This test detects whether there is an area of irritability in the brain, such as occurs in epilepsy. The electromyogram (EMG) records the activity of nerves in muscles. The EMG is helpful in diagnosing degenerative nerve disorders such as multiple sclerosis.
Tests of pulmonary function measure the breathing capacity of the lung and airways. By exhaling into a tube connected to a machine called a spirometer, information is obtained on respiratory functions.
Ultrasonography 超声波检测法
Abdominal cavity 腹腔
Television image 电视图像
Radiation 放射
Pregnancy 妊娠
Fetus 胎儿
Electrical impulse 电脉冲
Electrocardiograph 心电图
Electrode 电极
Treadmill 跑步机
Electroencephalogram 脑电图
Irritability 躁动
Epilepsy 癫痫
Electromyogram 肌电图
Degenerative 退化的
Multiple sclerosis 多发性硬化
Pulmonary 肺部的
Spirometer 肺活量计