BDA RADIOGRAPHY AND RADIOLOGY EXAM
SCRIPT 2 2026 FULL SOLUTIONS AND
CORRECT ANSWERS ALREADY PASSED
◉ What does Ma and Time (S) mean? Answer: Quantity of photons
◉ What is the radiation absorbed dose and its unit? Answer: The
amount of radiation absorbed by the patient, unit is Gy (Grey)
◉ What is equivalent dose? Answer: Radiation Absorbed dose x
Radiation Weighting Factor
◉ What is effective dose? Answer: equivalent dose x tissue
weighting factor
◉ What is indirect damage? Answer: When an x-ray photon hits and
ionises other molecules in the patients cells, most commonly water
molecules.
◉ If an x-ray ionises a water molecule what is produces? Answer:
Hydrogen peroxide and hydrogen gas
,◉ How might you modify the technique to take a panoramic
radiograph on an edentulous patient? Answer: Aim the canine
positioning light at the corner of the patients mouth
◉ What is not a main area to be addressed by a quality assurance
programme? Answer: Patient complaint procedure
◉ What age group has the highest risk of developing somatic
stochastic effects following a dental radiograph? Answer: 0-10 yrs
◉ Absorption of x-rays is proportional to what property of a
material or tissue? Answer: z3
◉ What is considered as a routine radiation protection protection
measure in dentistry? Answer: All staff should stand outside the
controlled area during the exposure
◉ Under what circumstances can the operator hold the x-ray
tubehead during exposure? Answer: Under no circumstances
◉ What is an advantage of using a receptor holder/beam aiming
device when taking paralleling technique periapical radiographs?
Answer: Correct position of x-ray tubehead can be easily determined
, ◉ How should the image receptor be aligned for a paralleling
technique periapical radiograph? Answer: Parallel to the tooth
◉ What is the common abbreviation used for the radiation
regulations that are concerned with the safety of patients? Answer:
IR(ME)R
◉ What is the correct vertical angulation for a standard upper
occlusal radiograph in adults? Answer: 65-75
◉ What radiographic technique makes use of the radiographic
keyhole? Answer: Oblique lateral radiographs
◉ How should a patient be places within a cephalostat for a lateral
cephalometric skull radiograph? Answer: So the x-ray beam is
perpendicular with both the midline sagittal plane and image
receptor
◉ What setting on the control panel determines the energy range of
the x-ray produced? Answer: Kv
◉ What do we mean by indirect damage when describing the effects
on patient tissue? Answer: X-ray hitting water and creating
damaging toxic chemicals
SCRIPT 2 2026 FULL SOLUTIONS AND
CORRECT ANSWERS ALREADY PASSED
◉ What does Ma and Time (S) mean? Answer: Quantity of photons
◉ What is the radiation absorbed dose and its unit? Answer: The
amount of radiation absorbed by the patient, unit is Gy (Grey)
◉ What is equivalent dose? Answer: Radiation Absorbed dose x
Radiation Weighting Factor
◉ What is effective dose? Answer: equivalent dose x tissue
weighting factor
◉ What is indirect damage? Answer: When an x-ray photon hits and
ionises other molecules in the patients cells, most commonly water
molecules.
◉ If an x-ray ionises a water molecule what is produces? Answer:
Hydrogen peroxide and hydrogen gas
,◉ How might you modify the technique to take a panoramic
radiograph on an edentulous patient? Answer: Aim the canine
positioning light at the corner of the patients mouth
◉ What is not a main area to be addressed by a quality assurance
programme? Answer: Patient complaint procedure
◉ What age group has the highest risk of developing somatic
stochastic effects following a dental radiograph? Answer: 0-10 yrs
◉ Absorption of x-rays is proportional to what property of a
material or tissue? Answer: z3
◉ What is considered as a routine radiation protection protection
measure in dentistry? Answer: All staff should stand outside the
controlled area during the exposure
◉ Under what circumstances can the operator hold the x-ray
tubehead during exposure? Answer: Under no circumstances
◉ What is an advantage of using a receptor holder/beam aiming
device when taking paralleling technique periapical radiographs?
Answer: Correct position of x-ray tubehead can be easily determined
, ◉ How should the image receptor be aligned for a paralleling
technique periapical radiograph? Answer: Parallel to the tooth
◉ What is the common abbreviation used for the radiation
regulations that are concerned with the safety of patients? Answer:
IR(ME)R
◉ What is the correct vertical angulation for a standard upper
occlusal radiograph in adults? Answer: 65-75
◉ What radiographic technique makes use of the radiographic
keyhole? Answer: Oblique lateral radiographs
◉ How should a patient be places within a cephalostat for a lateral
cephalometric skull radiograph? Answer: So the x-ray beam is
perpendicular with both the midline sagittal plane and image
receptor
◉ What setting on the control panel determines the energy range of
the x-ray produced? Answer: Kv
◉ What do we mean by indirect damage when describing the effects
on patient tissue? Answer: X-ray hitting water and creating
damaging toxic chemicals
