HESI Radiography Practice Test
1 Questions And 100% Verified Answers
Latest 2026 Update | Graded A+ | 100%
Success
In an x-ray tube, what is the the source of electrons used to make x-
rays?
A. Anode
B. Target
C. Filament
D. Focusing cup - CORRECT ANSWER -C. Filament
Electrons from tungsten atoms in the filament are used in the x-ray tube
to make x-rays.
Which aspect of electrical power is responsible for accelerating
electrons in an x-ray tube?
,A. Current flow
B. Resistive heat
C. Total wattage
D. Potential difference - CORRECT ANSWER -D. Potential difference
Selected kVp, also known as potential difference, accelerates electrons
crossing an x-ray tube.
Which radiation dose is required to produce mitotic death?
A. Nonexistent, as mitotic death cannot be produced in slowly dividing
cells or nondividing cells.
B. Less than the dose needed to produce apoptosis in slowly dividing
cells or nondividing cells.
C. More than the dose needed to produce apoptosis in slowly dividing
cells or nondividing cells.
D. The same as the dose needed to produce apoptosis in slowly dividing
cells or nondividing cells. - CORRECT ANSWER -B. Less than the dose
needed to produce apoptosis in slowly dividing cells or nondividing
cells.
,The radiation dose that is required to produce mitotic death is less than
the dose needed to produce apoptosis, or programmed cell death, in
slowly dividing or nondividing cells.
What is the most likely consequence for a cell when an x-ray photon
interacts with and inactivates the cell's master molecule?
A. Lose of all intracellular fluid.
B. Disruption of cell chemistry only.
C. Cell death.
D. Cell membrane rupture. - CORRECT ANSWER -C. Cell death.
The cell's master molecule is DNA. The consequence of inactivating DNA
is likely cell death.
What is the term for a reduction in x-ray photon intensity as it passes
through the patient?
A. Divergence
B. Attenuation
, C. Absorption
D. Scattering - CORRECT ANSWER -B. Attenuation
The reduction in intensity of the xray beam as it passes through matter
is attenuation.
Which information in the patient history should prompt the
radiographer to decide against using automatic exposure controls when
taking a chest x-ray?
A. Oat cell carcinoma
B. Pneumothorax
C. Chronic bronchitis
D. Emphysema - CORRECT ANSWER -D. Emphysema
The pathophysiologic changes to lung tissue in emphysema result in
easy penetration, so automatic exposure controls (AEC) should not be
enabled for radiographic exams in these patients because the film will
be too dense as a result of the control failing to shut the exposure off
quickly enough.
1 Questions And 100% Verified Answers
Latest 2026 Update | Graded A+ | 100%
Success
In an x-ray tube, what is the the source of electrons used to make x-
rays?
A. Anode
B. Target
C. Filament
D. Focusing cup - CORRECT ANSWER -C. Filament
Electrons from tungsten atoms in the filament are used in the x-ray tube
to make x-rays.
Which aspect of electrical power is responsible for accelerating
electrons in an x-ray tube?
,A. Current flow
B. Resistive heat
C. Total wattage
D. Potential difference - CORRECT ANSWER -D. Potential difference
Selected kVp, also known as potential difference, accelerates electrons
crossing an x-ray tube.
Which radiation dose is required to produce mitotic death?
A. Nonexistent, as mitotic death cannot be produced in slowly dividing
cells or nondividing cells.
B. Less than the dose needed to produce apoptosis in slowly dividing
cells or nondividing cells.
C. More than the dose needed to produce apoptosis in slowly dividing
cells or nondividing cells.
D. The same as the dose needed to produce apoptosis in slowly dividing
cells or nondividing cells. - CORRECT ANSWER -B. Less than the dose
needed to produce apoptosis in slowly dividing cells or nondividing
cells.
,The radiation dose that is required to produce mitotic death is less than
the dose needed to produce apoptosis, or programmed cell death, in
slowly dividing or nondividing cells.
What is the most likely consequence for a cell when an x-ray photon
interacts with and inactivates the cell's master molecule?
A. Lose of all intracellular fluid.
B. Disruption of cell chemistry only.
C. Cell death.
D. Cell membrane rupture. - CORRECT ANSWER -C. Cell death.
The cell's master molecule is DNA. The consequence of inactivating DNA
is likely cell death.
What is the term for a reduction in x-ray photon intensity as it passes
through the patient?
A. Divergence
B. Attenuation
, C. Absorption
D. Scattering - CORRECT ANSWER -B. Attenuation
The reduction in intensity of the xray beam as it passes through matter
is attenuation.
Which information in the patient history should prompt the
radiographer to decide against using automatic exposure controls when
taking a chest x-ray?
A. Oat cell carcinoma
B. Pneumothorax
C. Chronic bronchitis
D. Emphysema - CORRECT ANSWER -D. Emphysema
The pathophysiologic changes to lung tissue in emphysema result in
easy penetration, so automatic exposure controls (AEC) should not be
enabled for radiographic exams in these patients because the film will
be too dense as a result of the control failing to shut the exposure off
quickly enough.
