Flashcards in Radiology Deck (188)
Personnel who restrain animals should never do what?
sit on or lean over the x-ray table
T/F Radiographers must allow as much distance as possible between themselves and patients.
All personnel present in the radiography room when an exposure is made should wear?
appropriate protective lead apparel: gloves, gown, thyroid
T/F Genetic damage is not detectable until further generations are produced.
When radiographing a long bone, which joints must be included?
the joints immediately distal and proximal to the bone
T/F The smallest field size possible should be used for any given area of the body.
T/F Positional terms are named according to where the primary x-ray beam enters and exits the anatomic area of interest.
T/F As a general rule of thumb, canine patients tend to resist too much restraint and feline patients respond to a calm, authoritative approach to restraint.
Why should the patient's coat always be checked before taking radiographs?
to ensure that it is dry and as clean as possible
What is the purpose of the x-ray tube?
to produce a controlled x-ray beam
T/F Low kilovoltage peak (kVp) and high milliamperage second (mAs) techniques should be used as often as possible to prevent damage to the anode.
false-low kVp and low mAs
X-ray tube failure is usually a result of what error?
technical error, x-ray tubes should be cared for properly
The electrical components of the x-ray machine consist of?
the transformer, the generator, the line-voltage compensator, the timer, and the rectifer
Energy travels in ____ the length of which is measurable.
How do short wavelengths differ from longer ones?
shorter wavelengths have a higher frequency and penetrate farther than rays having longer wavelengths
______ is a form of electromagnentic radiation produced when electrons moving with great speed collide with matter.
The ability of x-rays to excite and ionize molecules within cells can cause what?
severe damage or death to those cells
The first written report concerning x-rays and their use for medical and surgical diagnosis was made in _____. The author and discovered was ____ _____
1895, Wilhelm Roentgen
The kVp controls what? What does the mAs control?
the wavelength and penetrating power of x-radiation, the number of x-rays produced
What is the most common artifact in veterinary radiography?
T/F Radiation of a longer wavelength has better penetrating ability and therefore produces a higher-quality radiograph.
A foam wedge should be placed under the sternum to elevate it to the same horizontal level as the spine for what views?
a lateral thoracic and thoracolumbar view
To obtain optimal radiographs of the spine, the disk spaces must be nearly _____ to the tabletop and in _____ alignment with each other.
T/F Manually extending a patient's front and rear limbs for a spinal view is not contraindicated if the patient has a spinal column injury.
T/F A ventrodorsal thoracic view is contraindicated in a patient in respiratory distress.
When subtle lung metastasis is suspected what is recommended?
both right and left lateral views of the thorax (3 views)
The thorax should be radiographed during peak _____, and the abdomen should be radiographed during peak _______
When viewing a radiograph of an animal's abdomen in a ventrodorsal or dorsoventral position, the animal's head is _____ of the viewbox and the patient's right is on the ____
top of, viewers left
T/F A slight difference in density is low contrast(long scale), a high difference in density is high contrast(short scale)