LMRT Review 4 2026/2027 | Actual Questions and Answers
Latest Updated 2026/2027 (Graded A+)
•
Which of the following transformers reduces the voltage on the secondary side to provide an
appropriate current to heat the filament?
- ✔✔step-down transformer
•
The process of causing alternating (A-C) current to flow in one direction (D-C) only is called:
- ✔✔Rectification
•
The maximum heat capacity of the anode of the X-ray tube is rated in terms of
- ✔✔heat units
•
Nearly all new x-ray machines manufactured today use _________________ generators
- ✔✔high frequency
•
The primary controlling factor of radiographic receptor exposure is
- ✔✔mAs
•
When a body part appears on a radiograph as shorter than it actually is, the term used is:
- ✔✔foreshortening
•
When a body part appears on a radiograph longer than it actually is, the term is used
- ✔✔Elongation
•
What is the guiding philosophy of radiation protection
- ✔✔ALARA (as low as reasonably achievable)
•
In general, which radiation affect are we most concerned about?
- ✔✔Long term
•
The x-ray beam changes as it travels through the patient by a process called
- ✔✔attenuation
, •
The intensity of radiation is inversely, proportional to the square of the distance between the source of
radiation and the person receiving it. This describes the.
- ✔✔inverse square law
•
What device is turned by a rotor?
- ✔✔anode
•
The process of thermionic emission causes:
- ✔✔Electrons to boil off the filament
•
Heat is produced in the x-ray tube as
- ✔✔Electrons interact with the target material
•
The collimator must be accurate to a level of:
- ✔✔2% of the SID
•
Which of the following describes the relationship between mAs and receptor exposure
- ✔✔Receptor exposure is directly proportional to mAs
•
Receptor exposure was formally called
- ✔✔density
•
The relationship between kVp and receptor exposure may be described as
- ✔✔direct, although not proportional
•
smoothing software may result in
- ✔✔loss of fine detail
•
Radiation that exits the x-ray tube from the anode is called
- ✔✔primary radiation
•
The photon-tissue interaction that does not cause ionization is:
- ✔✔coherent
Latest Updated 2026/2027 (Graded A+)
•
Which of the following transformers reduces the voltage on the secondary side to provide an
appropriate current to heat the filament?
- ✔✔step-down transformer
•
The process of causing alternating (A-C) current to flow in one direction (D-C) only is called:
- ✔✔Rectification
•
The maximum heat capacity of the anode of the X-ray tube is rated in terms of
- ✔✔heat units
•
Nearly all new x-ray machines manufactured today use _________________ generators
- ✔✔high frequency
•
The primary controlling factor of radiographic receptor exposure is
- ✔✔mAs
•
When a body part appears on a radiograph as shorter than it actually is, the term used is:
- ✔✔foreshortening
•
When a body part appears on a radiograph longer than it actually is, the term is used
- ✔✔Elongation
•
What is the guiding philosophy of radiation protection
- ✔✔ALARA (as low as reasonably achievable)
•
In general, which radiation affect are we most concerned about?
- ✔✔Long term
•
The x-ray beam changes as it travels through the patient by a process called
- ✔✔attenuation
, •
The intensity of radiation is inversely, proportional to the square of the distance between the source of
radiation and the person receiving it. This describes the.
- ✔✔inverse square law
•
What device is turned by a rotor?
- ✔✔anode
•
The process of thermionic emission causes:
- ✔✔Electrons to boil off the filament
•
Heat is produced in the x-ray tube as
- ✔✔Electrons interact with the target material
•
The collimator must be accurate to a level of:
- ✔✔2% of the SID
•
Which of the following describes the relationship between mAs and receptor exposure
- ✔✔Receptor exposure is directly proportional to mAs
•
Receptor exposure was formally called
- ✔✔density
•
The relationship between kVp and receptor exposure may be described as
- ✔✔direct, although not proportional
•
smoothing software may result in
- ✔✔loss of fine detail
•
Radiation that exits the x-ray tube from the anode is called
- ✔✔primary radiation
•
The photon-tissue interaction that does not cause ionization is:
- ✔✔coherent
