BDA RADIOGRAPHY AND RADIOLOGY EXAM
WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+
Terms in this set (52)
What's direct action film? Intra oral film. Only sensitive to xray photons
What's indirect action film Extra oral with intensifying screen & cassette .
sensitive to light photons
Why is direct action film used for For excellent image quality
intra oral
black paper is used on either side Light
of the film to protect the film damage by fingers
from...? saliva that may leak into film packet
, Why is a thin sheet of lead foil To stop residual radiation going further into pt
placed behind the film? tissues
To stop secondary radiation from scattering back
onto film and degrading the image
If film was placed wrong way in pts mouth the
lead foil would show on radiograph making the
fault easily identified
Increasing the Ma will make the too dark/blacken
image
Decreasing the mA will make the Too white / light
image
What % of energy is conducted as Heat -99%
heat and X-rays ? Xrays - 1%
What is the recommended FSD 200mm or 20cm
What are the dose units used for Radiation absorbed dose
radiography Equivalent dose
Effective dose
What dose is the actual dose Effective dose
patients are interested in?
What is the effective dose from one 0.022&0.0003 millisievert msv
intra oral radiograph ?
WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+
Terms in this set (52)
What's direct action film? Intra oral film. Only sensitive to xray photons
What's indirect action film Extra oral with intensifying screen & cassette .
sensitive to light photons
Why is direct action film used for For excellent image quality
intra oral
black paper is used on either side Light
of the film to protect the film damage by fingers
from...? saliva that may leak into film packet
, Why is a thin sheet of lead foil To stop residual radiation going further into pt
placed behind the film? tissues
To stop secondary radiation from scattering back
onto film and degrading the image
If film was placed wrong way in pts mouth the
lead foil would show on radiograph making the
fault easily identified
Increasing the Ma will make the too dark/blacken
image
Decreasing the mA will make the Too white / light
image
What % of energy is conducted as Heat -99%
heat and X-rays ? Xrays - 1%
What is the recommended FSD 200mm or 20cm
What are the dose units used for Radiation absorbed dose
radiography Equivalent dose
Effective dose
What dose is the actual dose Effective dose
patients are interested in?
What is the effective dose from one 0.022&0.0003 millisievert msv
intra oral radiograph ?
