Chapter 6: X-ray Equipment
Radiographic rooms equipped with a tilting table are primarily designed for performing (radiographic or fluoroscopic) procedures.
What is fluoroscopic?
When an x-ray photon passes through matter, it undergoes a process called
What is attenuation?
When an x-ray photon passes through matter, it undergoes a process called
What is attenuation?
An effective method for reducing scatter radiation production is the
What is the 15% rule of kVp change?
The radiographic image is a ____-dimensional object.
What is two?
A three-phase, rectified current produces a voltage ripple of ____ pulses per Hz.
What is 6?
The electron dislodged during Compton scattering is called the
What is a recoil electron?
If a photon interacts with matter and scatters, the photon will exist with (more or less) energy.
What is exists with less energy?
The volume of the irradiated tissue increases as the field size (increases or decreases) and the patient thickness (increases or decreases).
What are increases and increases?
Specialized cells of the retina convert the visual image to ___________ impulses.
Whare is nervous?
Automatic exposure control (AEC) technology determines exposure (time, kVp, or mA).
What is exposure time?
If a photon interacts with matter and scatters, the photon will exist with (more or less) energy?
What is exists with less energy?
When x-ray photons interact with matter and change direction, the process is called
What is scatter?
The (higher or lower) the atomic number of the irradiated material, the (higher or lower) the number of photoelectric absorption interactions that occur.
What are higher and higher?
____ nerve transmits visual neurological information to the brain.
What is the optic?
Where is the stator of the anode induction motor located?
What is outside the glass envelope and outside the rotor?
During the photoelectric interaction, as an electron transfers from an outer shell to a vacant inner shell, energy is released in the form of a _____________ photon.
What is a characteristic photon?
During photoelectric absorption, the ejected electron is called a/an
What is photoelectron?
When a beam-restricting device is used to limit field size, technical factors may need to be (increased or decreased) to compensate for the change in image receptor exposure.
What is increased?
Scotopic vision is controlled by the
What are the rods?
In the x-ray circuit, the mA control is found between the:
What is between the incoming line and the step-down transformer?
During fluoroscopic studies, the primary source of exposure to the radiographer is due to _______________ scattering.
What is compoton scattering?
During Compton scattering, the incident photon energy is divided between the __________ electron and the __________ photon.
What is a recoil electron and the scattered photon?
Penumbra is (increased or reduced) when the beam restrictor is at a/an (increased or decreased) distance from the port.
What are reduced and increased?
The __________ effect occurs when the eye perceives a change in density.
What is the Mach effect?