Physics 2 exam 2 review of packets

The three principles parts of an x-ray imaging system are:

• anode , cathode and focusing cup

• anode , cathode and high voltage generator

• X-ray tube , control console and high voltage generator

• X ray tube , high voltage generator and image receptor

• x ray tube , protective housing and high voltage generator

The primary purpose of the glass envelope of an x ray tube is to:

• control leakage radiation

• control off focus radiation

• cool the tube

• ensure against electric shock

• provide a vacuum

The protective housing of an x ray tube is designed to :

• Control isotropic x ray emission

• Control scatter radiation

• Limit operations to 100 KVP or less

• Reduce the hazard of leakage radiation

• Reduce the hazard of scatter radiation

A diagnostic x ray tube is an example of which of the following

• Cathode

• Diode

• Tetrode

• Anode

• Electrode

The large filament is used during radiography when the heat load is :

• High and visibility of detail is important

• High and visibility of detail is less important

• Low and high Kvp is required

• Low , and visibility of detail is important

• Low and visibility of detail is less impressive

In most x ray tubes , there are two filaments to:

• Ensure saturation current

• Produce higher energy x rays

• Provide two focal spot

• Reduce space charge effects

Once filament temperature becomes adequate, a further small rise in filament temperatures will cause tube current to :

• Decrease just a bit

• increase just a bit

• Decrease very much

• Increase very much

• No change

The Cathode beam of an x - ray tube is the :

• current that heats the filament

• Focused electron beam within the tube

• off focus radiation

• primary x-ray beam

• Secondary radiation

The X-ray tube current :

• controls x-ray energy

• flows through both filaments at the same time

• Is controlled by the filament current

• is the current that flows through the filament

• usually varies from 50 to 100 A

Most x-ray tube used for radiography

• are dual-focus tubes

• do not emit leakage radiation

• have a fixed anode

• operate in the space charge- limited mode

• use tungsten filaments that do not vaporize