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
有原文看一下吗
大发发发Rita 回复 @文君Alinda: 邮箱