Question

The time setting on the X-Ray machine is measured by using which of the following methods?

1.Minutes or impulses
2.Minutes or milliamperes
3.Fractions of a second or milliamperes
4.Fractions of a second or impulses

Answer 1

The time setting on an X-ray machine is measured using fractions of a second or impulses. This is important for regulating the exposure duration to ensure safe and effective imaging while preventing overexposure to radiation.

Step-by-step explanation:

The time setting on an X-ray machine is generally measured in fractions of a second or in impulses. This setting determines the exposure time, which is crucial for producing a clear image without overexposing the patient to radiation. Modern X-ray systems allow for precise control over the exposure time, often using digital timers for accuracy.

As part of the operation of an X-ray machine:

1. Electron guns are used to accelerate electrons onto a metal target, which subsequently emits X-rays.
2. The number of electrons striking the target per second can be calculated using the current (measured in milliamperes) and the charge of the electrons.
3. The total charge that strikes the target over a specific time can be determined by multiplying the current by the duration of the exposure, taking into account the conversion from milliamperes to amperes and from seconds to the desired unit of time.

In physics, the fundamental unit of time is the second (s), which is used across various measurements systems. This makes understanding and controlling the time settings on X-ray machines a matter of physics.