BDA RADIOGRAPHY QUESTIONS AND CORRECT
VERIFIED ANSWERS ALREADY GRADED A | 2026
UPDATED | GUARANTEED SUCCESS
what sense is used to detect x-rays? - Answer -X-rays cannot be detected by any human
sense
what type of radiation are x-rays? - Answer -electromagnetic
If an x-ray photon passes straight through the patient without touching them, we say it has
been? - Answer -Transmitted, X-rays can interact with the patient's tissues in a number of
ways, but it's important to remember x-rays can just pass straight through without touching
anything. That's why it's vital you never stand in the path of the x-ray beam
Inside a dental x-ray tube, what is the anode made of? - Answer -A tungsten target set
into a copper block
What setting on the control panel determines the energy range of the x-rays produced? -
Answer -kV, kV sets the energy range of the x-ray beam.
What do we mean by 'indirect damage' when describing the effects of x-rays on patient's tissue?
- Answer -X-rays hitting water and creating damaging, toxic chemicals, Indirect damage
occurs when x-rays hit water molecules, turning them into toxic chemicals like hydrogen
peroxide. These toxic molecules can go on to cause damage throughout the cell.
, Which effects of X-rays principally concern the dental profession? - Answer -Somatic
stochastic effects, we are mostly concerned about the chances of causing damage to normal
body cells.
What is the highest, safe dose of radiation that's 100% guaranteed not to cause any negative
health effects? - Answer -0 mSv
What age group is most at risk of radiation induced cancer? - Answer -0-20yrs old, cancer
typically (but not exclusively) takes time to develop. So, taking DNA damage at a young age
leaves more time to develop into something serious.
What do we normally mean when we say "dose" in relation to medical and dental radiation
exposures? - Answer -Effective dose, effective doses accounts for the type of radiation
used and the type of body tissue being exposed.
What type of image receptor requires the least amount of radiation to create a radiographic
image? - Answer -Digital receptor, digital sensors require the lowest amount of radiation,
and therefore the lowest dose to the patient. Hence the recommendations to use digital sensors
wherever possible.
What x-ray set variable affects the degree of blackening of the radiographic image? -
Answer -mA controls the quantity of x-ray photons in the beam. The more photons hit the
image receptor, the more blackening of the final image.
Why must we use a shield when the x-ray beam is pointed at the patient's thyroid gland? -
Answer -The thyroid gland is particularly sensitive to radiation damage
What is the annual, recommended dose constraint for dental staff involved in radiography? -
Answer -0.3mSv
VERIFIED ANSWERS ALREADY GRADED A | 2026
UPDATED | GUARANTEED SUCCESS
what sense is used to detect x-rays? - Answer -X-rays cannot be detected by any human
sense
what type of radiation are x-rays? - Answer -electromagnetic
If an x-ray photon passes straight through the patient without touching them, we say it has
been? - Answer -Transmitted, X-rays can interact with the patient's tissues in a number of
ways, but it's important to remember x-rays can just pass straight through without touching
anything. That's why it's vital you never stand in the path of the x-ray beam
Inside a dental x-ray tube, what is the anode made of? - Answer -A tungsten target set
into a copper block
What setting on the control panel determines the energy range of the x-rays produced? -
Answer -kV, kV sets the energy range of the x-ray beam.
What do we mean by 'indirect damage' when describing the effects of x-rays on patient's tissue?
- Answer -X-rays hitting water and creating damaging, toxic chemicals, Indirect damage
occurs when x-rays hit water molecules, turning them into toxic chemicals like hydrogen
peroxide. These toxic molecules can go on to cause damage throughout the cell.
, Which effects of X-rays principally concern the dental profession? - Answer -Somatic
stochastic effects, we are mostly concerned about the chances of causing damage to normal
body cells.
What is the highest, safe dose of radiation that's 100% guaranteed not to cause any negative
health effects? - Answer -0 mSv
What age group is most at risk of radiation induced cancer? - Answer -0-20yrs old, cancer
typically (but not exclusively) takes time to develop. So, taking DNA damage at a young age
leaves more time to develop into something serious.
What do we normally mean when we say "dose" in relation to medical and dental radiation
exposures? - Answer -Effective dose, effective doses accounts for the type of radiation
used and the type of body tissue being exposed.
What type of image receptor requires the least amount of radiation to create a radiographic
image? - Answer -Digital receptor, digital sensors require the lowest amount of radiation,
and therefore the lowest dose to the patient. Hence the recommendations to use digital sensors
wherever possible.
What x-ray set variable affects the degree of blackening of the radiographic image? -
Answer -mA controls the quantity of x-ray photons in the beam. The more photons hit the
image receptor, the more blackening of the final image.
Why must we use a shield when the x-ray beam is pointed at the patient's thyroid gland? -
Answer -The thyroid gland is particularly sensitive to radiation damage
What is the annual, recommended dose constraint for dental staff involved in radiography? -
Answer -0.3mSv
