Radiology Flashcards
what is size 0 receptor for
anterior periapicals
what is size 2 receptor for
bitewings and posterior periapicals
what is size 4 receptor for
occlusals
what happens when the tooth is quite close to the receptor
appear larger
how do you achieve the best possible projection geometry when taking radiographs
focus-skin distance
position receptor as close as possible to tooth
ensure receptor is as stable as possible in mouth
use image receptor holders with a beam aiming device
keep patient still
what is the focus to skin distance
200mm
how is the focus to skin distance maintained
using spacer cone
indications for bitewings
detection of caries
assess restorations
bone loss
indications for periapicals
detect apical inflammation
bone loss
unerupted teeth
root morphology
endo treatment
dental trauma
dental implants
lesions within alveolar bone
what is the controlled area distance
1.5m
what should all radiation exposures be according to the ICRP
justified
optimised
limited
what is the name of the regulations for radiation exposures of general public and staff
IRR17
what is the name of the regulations for radiation exposures of patients
IRMER17
what are the IRMER roles
referrer
practitioner
operator
employer
what does the referrer do in IRMER
request the image
what does the practitioner do in IRMER
justify the radiation exposure and authorise it
ensure doses ALARP
what does the operator do in IRMER
authorise and carry out exposure
assess and report on image
once a radiograph has been taken and reported on, who is it provided to
referrer
what are the responsibilities of the employer in IRMER
entitle staff to carry out roles with a clear scope of practice stating what roles they can perform
have procedures to ensure clinical evaluation of outcome of each medical exposure is recorded
what is the technique used for parallax when working out localisation of an object on a radiograph
SLOB
PAL (if it is palatal it goes with you)
