2197142
Radiography 2
- Chemical processing
- processing chemicals: Handling -
funnels ventilation PPE Storage -
cool dry covered. Dispolsal - Special
waste containers non-infectious
waste COSHH
- spillages: ventilate the area isolate the spillage and wear full
PPE absorb spillage using inert material such as sand or
absorbent granules scoop it up and place it in a plastic
container. do not allow fixer to get into drains. dispose in a
way that meets local rules follow COSHH
- developer sensitised
Fixer Unsensitised
- Development the sensitised silver
halide crystals in the emulsion are
converted to black metalic silver to
produce the black/grey parts of the
image. Washing the film is washed in
water to remove residual. Fixer the
unsensitised silver halide crystals in the
emulsion are removed to reveal the
transparent or white parts of the image.
Washing, the film is washed again
before finally being dried.
- processing chemicals: Handling -
funnels ventilation PPE Storage -
cool dry covered. Dispolsal - Special
waste containers non-infectious
waste COSHH
- Maintenance and storage of film
- Methods of mounting radiographs they must
be mounted correctly other wise the right
teeth will look like the left teeth visa versa
extra oral cassettes are marked with a letter L
to indicate left side all intra-oral films have a
raised pimple on one corner to indicate which
way it should be facing.
- Protocol of storing. digital: stored ont
PT notes on computer or downloaded
onto a disk. Radiographs Mounted in
plastic envelopes with PT details stored
in PT card or xray filing system
- films could get lost or mixed up incorrect
treatment can be given to patients can
also lead to confidentiality being breached
- rotation of stock and
deterioration. keep
unexposed film away from
radiation heat and liquids
- Methods of mounting radiographs they must
be mounted correctly other wise the right
teeth will look like the left teeth visa versa
extra oral cassettes are marked with a letter L
to indicate left side all intra-oral films have a
raised pimple on one corner to indicate which
way it should be facing.
- manual processing
- requirements light tight adequate working
space, ventilation, washing facilities, film
storage safe lights processing tanks
thermometer immersion heater accurate
timer and film hangers
- the exposed sacket is unwrapped and clipped on a film
hanger the film is immersed in the developer and agitated
several times to remove air bubbles left for 5mins at 20
degrees C it is then rinsed well for 10 sec then immersed in
the fixer for 8-10mins the film is washed under running water
for 10-20sec the film is allowed to dry in a dust free area
- requirements light tight adequate working
space, ventilation, washing facilities, film
storage safe lights processing tanks
thermometer immersion heater accurate
timer and film hangers
- Faults within processing
- Quality Assuring and recording systems of dental radiographs
- QA was developed to ensure that
diagnosis are consistent and of a
high quality. it is used to reduce
repeats identify and eliminate
error increase efficency and
monitor training and equiptment.
- QU should: involve a simple to use
score system easily identify areas of
concern develop solutions to
identified problems limit exposures
achieve ALAPP
- QA was developed to ensure that
diagnosis are consistent and of a
high quality. it is used to reduce
repeats identify and eliminate
error increase efficency and
monitor training and equiptment.
- automatic and digital processing
- DIGITAL scanner is linked to a computer.
the film is placed in the scanner and is
scanned by a laser beam the sorted xray
energy is released as light the light is
detected and converted into electrical
energy into the computer and displayed as a
digital image this film is then cleaned and
ready ofr re-use.
- Safe Lights dark rooms usually have a safe light
this light emits a colour that the eye can see but
will not expose the film, the light will provide
sufficient illumination for the workers in the
darkroom. the brightness of the light (bulb size)
and distance between the light and film must be
secected at a rate to allow the worker to see
however minimise exposure.
- AUTOMATIC carried out by a machine it carries the
film through the complete cycle using a roller system
most don't need a dark room the same process as
manual the drying process is much quicker.
- DIGITAL scanner is linked to a computer.
the film is placed in the scanner and is
scanned by a laser beam the sorted xray
energy is released as light the light is
detected and converted into electrical
energy into the computer and displayed as a
digital image this film is then cleaned and
ready ofr re-use.
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