Flashcards in Radiology Deck (188)
Name three things that x-ray film are sensitive to
light, humidity, moisture
What metal can be retrieved the developing solutions?
metallic black silver
Always store cassettes how?
vertically upright, lid on, lights off
if film is black what does it mean? Clear? Trees?
exposed, never exposed, static electricity
Collimation for abdomen ventrodorsal view
right side down, diaphragm to femoral head, expiration, beam center/meaurement should be caudal aspect of 13th rib
Collimation for abdomen later view
right side down, pull hind limbs caudally, foam pad placed between femurs, foam pad placed under the sternum, diaphragm to caudal femoral head, expiration, beam center/measurement caudal aspect of 13th rib
When taking a lateral thoracic where should the x be over? Where is the diaphragm located?
heart (caudal border of scapula), 6 ribs up or 7 ribs down
Heat resistant metal used in the filament of the cathode
This term refers to how easily details can be perceived on a radiograph
Primary factor affecting density is ____
Example of ________ damage include cancer, cataracts, aplastic anemia, sterility
Outer shadow of an object being radiographed
As the number of electrons increased this increases
The higher the ______, the faster the electrons accelerate increasing the energy of the x-rays produced when the electron cloud collides with the anode (target)
Some pathologic conditions including ascites, pleural effusion, and cardiomegaly require an increase in ___ up to 50% to increase radiographic density.
T/F When radiographing the pelvis in a lateral position, a foam wedge should be placed between the patient's stifles to keep the femurs parallel.
Measurement for the lateral pelvic view should be taken over the ____, and measurement for the ventrodorsal view should be taken at the ____.
T/F To use the PennHIP method of diagnosing canine hip dysplasia, the veterinarian and technician must receive special certification.
T/F Sedating the patient is not often used to take radiographs to diagnose hip dysplasia.
What should be on the film label?
1) name and address of the hospital practice or veterinarian
2) date the radiograph was taken
3) patient identification-name of owner, patient, age, sex, and breed
Why is it important to label film correctly?
so it can identified at a later date, and for legal reasons
T/F The only legal labeling of a radiograph is what is in the film emulsion.
What are the views and extremities?
ventrodorsal, lateral, craniocaudal, palmer, planter
State the four factors that must be considered for accurate reproduction of an anatomic area:
1) welfare of the patient
2) restraint and immobilization of the patient
3) minimal trauma to the area of interest
4) the least risk exposing those assisting with the examination to radiation
If a radiographer is unsure where to measure a particular part, the measurement should be made where?
over the thickest area
When there is a large difference in thickness in a particular area, it is advisable to make two separate radiographs with different?
T/F If only a small difference in tissue density exists, a compromise should be made.
Exposing a large area that is not necessary increases the amount of scatter radiation which decreases _________
When a marker is placed on a cassette for craniocaudal or caudocranial views, it should be placed on the _____ aspect of the extremity.