LMRT ARRT LIMITED SCOPE RADIOGRAPHY
EXAMINATION TEST 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ An "electron cloud" surrounding the filament of the cathode is
referred to as a. Answer: Space charge
◉ Free electrons of X-ray production come from the. Answer: Filament
◉ The creation of the space charge in the X-ray tube produces. Answer:
thermionic emission
◉ The majority of photons in the X-ray beam are created by which
process? Answer: Bremsstrahlung interactions
◉ More than 99% of the energy of the electron stream is converted into.
Answer: heat
◉ the high-speed rotation (10,000 rpm) of the anode enables. Answer:
Greater dissipation of heat from high technical factors
,◉ The degree of angulation of the x-ray tube target will determine the.
Answer: size of the actual and effective focal spot
◉ A dual-focus X-ray tube has:
1: Two filaments
2: Two focal spot sizes
3: Two anodes. Answer: 1 and 2
◉ The anode heel effect is a phenomenon of X-ray production that
results in. Answer: Uneven distribution of radiation within the x-ray
field
◉ The penetrating power of the X-ray beam is controlled by varying the.
Answer: Peak kilovoltage (kVp)
◉ The rate flow of current flow across the X-ray tube is measured in.
Answer: mA
◉ Doubling the mA will result in
1: increased patient dose
2: twice as many photons in the X-ray beam
, 3: increased radiographic density. Answer: 1, 2, and 3
◉ The unit used to indicate the total quantity of X-ray expose is.
Answer: Millionsampere-seconds (mAs)
◉ The device for removing long-wavelength radiation from the primary
X-ray beam is the. Answer: Filter
◉ X-ray equipment capable of producing 70 kVp or more is required to
have total filtration of at least. Answer: 2.5 mm Al equiv
◉ The purpose of rotating the anode of the X-ray tube is to. Answer:
Increase the heat capacity of the anode
◉ Image sharpness is determined by the. Answer: Size of the effective
focal spot
◉ Above 70 kVp, what percentage of photons is created by the
bremsstrahlung process? Answer: 85%
◉ The amount detail seen in the X-ray image is referred to as. Answer:
spatial resolution
◉ Of what material is the filament made? Answer: Tungsten
EXAMINATION TEST 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ An "electron cloud" surrounding the filament of the cathode is
referred to as a. Answer: Space charge
◉ Free electrons of X-ray production come from the. Answer: Filament
◉ The creation of the space charge in the X-ray tube produces. Answer:
thermionic emission
◉ The majority of photons in the X-ray beam are created by which
process? Answer: Bremsstrahlung interactions
◉ More than 99% of the energy of the electron stream is converted into.
Answer: heat
◉ the high-speed rotation (10,000 rpm) of the anode enables. Answer:
Greater dissipation of heat from high technical factors
,◉ The degree of angulation of the x-ray tube target will determine the.
Answer: size of the actual and effective focal spot
◉ A dual-focus X-ray tube has:
1: Two filaments
2: Two focal spot sizes
3: Two anodes. Answer: 1 and 2
◉ The anode heel effect is a phenomenon of X-ray production that
results in. Answer: Uneven distribution of radiation within the x-ray
field
◉ The penetrating power of the X-ray beam is controlled by varying the.
Answer: Peak kilovoltage (kVp)
◉ The rate flow of current flow across the X-ray tube is measured in.
Answer: mA
◉ Doubling the mA will result in
1: increased patient dose
2: twice as many photons in the X-ray beam
, 3: increased radiographic density. Answer: 1, 2, and 3
◉ The unit used to indicate the total quantity of X-ray expose is.
Answer: Millionsampere-seconds (mAs)
◉ The device for removing long-wavelength radiation from the primary
X-ray beam is the. Answer: Filter
◉ X-ray equipment capable of producing 70 kVp or more is required to
have total filtration of at least. Answer: 2.5 mm Al equiv
◉ The purpose of rotating the anode of the X-ray tube is to. Answer:
Increase the heat capacity of the anode
◉ Image sharpness is determined by the. Answer: Size of the effective
focal spot
◉ Above 70 kVp, what percentage of photons is created by the
bremsstrahlung process? Answer: 85%
◉ The amount detail seen in the X-ray image is referred to as. Answer:
spatial resolution
◉ Of what material is the filament made? Answer: Tungsten
