The difference between ct and ordinary x-ray

1, the scanning method is different

ct: the use of precise collimation of x-ray beams, γ-rays, ultrasound, etc., and the sensitivity of the detector with a part of the human body for a cross-section scanning.

x-ray: the toughness of the electron radiation, with high-energy electron bombardment of metal, electrons in the process of hitting the metal in the process of sharp deceleration, in accordance with electromagnetism, there is accelerated charged particles will radiate electromagnetic waves, if the electron energy is very large, such as tens of thousands of e-volts, can produce x-rays, this is the current laboratories and factories, hospitals, etc., used in the production of x-rays method.

2, the harm is different:

CT: If subjected to a long time, large doses of irradiation, may lead to cataracts, sterilization, growth retardation, and even induce malignant tumors or leukemia.

X-ray: long-term acceptance of X-ray will cause a lot of harm to the human body, such as: autonomic nervous system dysfunction, hematopoietic hypoplasia, lens clouding, spermatozoa production disorders, and even induced tumors, etc. X-ray injuries are the most common radiation damage to health care workers. Suffer damage to cells, tissues, organs can also cause secondary damage to the body.

3, the use of different:

CT: CT diagnosis due to its special diagnostic value, has been widely used in clinical; the development of modern industry, so that the CT in non-destructive testing and reverse engineering to play a significant role; air transport, transportation ports and harbors, large-scale cargo container case device.

X-rays: X-rays can be excited fluorescence, ionization of gases, photographic latex sensitivity, so X-rays can be used in ionization meters, scintillation counters and photographic latex film detection research areas, the crystal structure of the dot matrix of the X-rays can produce a significant diffraction effect.

Reference:Baidu Encyclopedia-CT

Reference:Baidu Encyclopedia-X-Ray