megavoltage การใช้

Megavoltage x-rays also have higher relative biological effectiveness than orthovoltage x-rays.
Megavoltage X-rays are by far most common in radiotherapy for treatment of a wide range of cancers.
Megavoltage x-ray units were first built in the late 1930s but because of cost were limited to a few institutions.
These properties help to make megavoltage x-rays the most common beam energies typically used for radiotherapy in modern techniques such as IMRT.
The technique was largely abandoned in the late 1950s with the advent of megavoltage radiation equipment, which enabled the delivery of more penetrating external radiation.