BDA radiography and radiology
Study online at https://quizlet.com/_dvr43d
1. What's direct action film? Intra oral film. Only sensitive to xray photons
2. What's indirect action film Extra oral with intensifying screen & cassette . sensitive to light
photons
3. Why is direct action film For excellent image quality
used for intra oral
4. black paper is used on ei- Light
ther side of the film to pro- damage by fingers
tect the film from...? saliva that may leak into film packet
5. Why is a thin sheet of lead To stop residual radiation going further into pt tissues
foil placed behind the film? 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
6. Increasing the Ma will make too dark/blacken
the image
7. Decreasing the mA will Too white / light
make the image
8. What % of energy is con- Heat -99%
ducted as heat and X-rays ? Xrays - 1%
9. What is the recommended 200mm or 20cm
FSD
10. What are the dose units Radiation absorbed dose
used for radiography Equivalent dose
Effective dose
1/6
, BDA radiography and radiology
Study online at https://quizlet.com/_dvr43d
11. What dose is the actual Effective dose
dose patients are interested
in?
12. What is the effective dose 0.022&0.0003 millisievert msv
from one intra oral radi-
ograph ?
13. What are the steps involved Radiation absorbed dose x weighting factor = equivalent dose
for effective dose ? Equivalent dose x tissue weighting factor = effective dose
Add all effective doses added up for final effective dose
14. Definition of paralleling Image receptor parallel to the long axis of the tooth and X-ray beam
technique at right angles to tooth and image receptor
15. Clinical indications for peri- 1- apical infection
apical paralleling technique 2-periodontal tissues
? There's 7 3- trauma to teeth & bone
4- root numbers and shape before XLA
5-before during and after endo
6-before and after apical surgery
7-post op and evaluation of implants
16. If the position of the tooth is Forshortened
not ideal the image may be
?
Foreshortened
Elongated
Distorted
17. If the position of the image Elongated
receptor isn't ideal / slanted
the image may appear?
2/6
Study online at https://quizlet.com/_dvr43d
1. What's direct action film? Intra oral film. Only sensitive to xray photons
2. What's indirect action film Extra oral with intensifying screen & cassette . sensitive to light
photons
3. Why is direct action film For excellent image quality
used for intra oral
4. black paper is used on ei- Light
ther side of the film to pro- damage by fingers
tect the film from...? saliva that may leak into film packet
5. Why is a thin sheet of lead To stop residual radiation going further into pt tissues
foil placed behind the film? 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
6. Increasing the Ma will make too dark/blacken
the image
7. Decreasing the mA will Too white / light
make the image
8. What % of energy is con- Heat -99%
ducted as heat and X-rays ? Xrays - 1%
9. What is the recommended 200mm or 20cm
FSD
10. What are the dose units Radiation absorbed dose
used for radiography Equivalent dose
Effective dose
1/6
, BDA radiography and radiology
Study online at https://quizlet.com/_dvr43d
11. What dose is the actual Effective dose
dose patients are interested
in?
12. What is the effective dose 0.022&0.0003 millisievert msv
from one intra oral radi-
ograph ?
13. What are the steps involved Radiation absorbed dose x weighting factor = equivalent dose
for effective dose ? Equivalent dose x tissue weighting factor = effective dose
Add all effective doses added up for final effective dose
14. Definition of paralleling Image receptor parallel to the long axis of the tooth and X-ray beam
technique at right angles to tooth and image receptor
15. Clinical indications for peri- 1- apical infection
apical paralleling technique 2-periodontal tissues
? There's 7 3- trauma to teeth & bone
4- root numbers and shape before XLA
5-before during and after endo
6-before and after apical surgery
7-post op and evaluation of implants
16. If the position of the tooth is Forshortened
not ideal the image may be
?
Foreshortened
Elongated
Distorted
17. If the position of the image Elongated
receptor isn't ideal / slanted
the image may appear?
2/6
