Transcript Radiographic Film - Mukwonago Area School District

 X-ray
films are generally mad of an
emulsion-gelatin containing radiation
sensitive silver halide.
 with a flexible, blue tented base
 X-ray films are sensitive to light
 Emulsion layers are thin so developing,
fixing and drying time can be reasonable
 When gamma rays or light strike the
silver halide, changes take place
 Selection
-
-
depends on a number of factors:
Composition, shape & size of part being
examined
Weight and location of part being
examined
Type of radiation used
Intensity of the gamma radiation;
kilovoltage
Relative importance of high detail or
quick & economical results
 Radiographic
film comes in most basic
form as individual sheets in a box
 Each sheet must be loaded into a
cassette or film holder in the darkroom to
protect from light exposure
 Available in a variety of sizes
 Industrial
X-ray films also available in an
each sheet form
 Sheets are in individual wrapped sheets;
help prevent fingerprints and damage
 Packaged
film is also available in rolls
 Allows radiographer to cut the film to any
length
 Advantages?
- Longer joints/limbs
- Offer economic advantage
 Should
always be handled carefully to
avoid physical strains:
- Pressure
- Creasing
- Buckling
- Friction
 Make sure pressure is uniform
 Self-contained
units with integrated x-ray
equipment
 Typically shielded with steel and lead to
absorb x-ray radiation
 Equipped with emergency “kill buttons”
that allow radiographers to shut down he
system
A
strict science governed by rigid rules
 Involving:
- Chemical concentration
- Temperature
- Time
- Physical movement
- Require high degrees of consistency
and quality control
 Can be processed by hand or machine
 An
ideal radiographic image should be
an accurate portrayal of the area under
examination
 Must ensure that there is:
- Minimal image distortion
- Contrast
- Magnification
- Distortion
- Accurate positioning
 Exposure
chart is a useful guide
 Try to keep patient in same position
while developing film
- Underexposure
- Overexposure
- Fogging
- Lacks Contrast
- Screen Marks
 Radiographs
should always be labeled with
correct anatomical markers
- Patients details and date of exam
 Generally viewed on a light box
 Becoming more common to digitize
radiographs to be viewed on a monitor
 Area should be clean
 Tools (masking aids/film markers) close at
hand
 Gloves should be worn
 Light level should be low