mixed review deck 2 Flashcards
The most common sites for subcutaneous drug injections (3)
abdomen
outer thighs or back of thighs
outer upper arms
Weighting factor for the liver
0.05
The ___ of the syringe holds the medication
barrel
What’s the effect of increased filtration on subject contrast?
Increased filtration = decreased subject contrast
The foot is placed on the ___ surface for a lateral projection of the first toe
medial
Chest projection used to differentiate lobes of the lungs, demonstrate interlobar fissures, and localize pulmonary lesions
lateral
What is the point where the needle attaches to the syringe?
the hub of the needle
What is the effect of a decrease in field size on quantum mottle?
Decreased field size = increased quantum mottle (because of decreased receptor exposure)
Name for an image display monitor that works by accelerating electrons toward a fluorescent screen
cathode ray tube (this is what most desktop display screens will typically use and is similar to the television picture tube in a television receiver)
The temporomandibular joint demonstrates what type(s) of movement?
both hinge (ginglymus) and gliding (it is termed a ginglymoarthrodial joint)
The sampling frequency of an imaging system determines the ___ size
pixel
Name the 7 bones that make up the orbit
Many Purple Zebras Eat Silly Little Frogs
maxilla, palatine, zygomatic, ethmoid, sphenoid, lacrimal, frontal
What grid error happens when the planes of the x-ray tube and grid surface are not parallel, and what is its appearance?
off-level grid error; shows acceptable brightness along one side but not on the opposite side
Government regulations require the x-ray tube to be within ___ degree(s) of perpendicular
1 degree
What is the speed of rotating anodes (in rpm) of low and high-speed rotating anodes?
Low-speed is 3,000 rpm
High-speed is 10,000 rpm
A fracture at the base of the first metacarpal is …
a Bennett fracture
A boxer’s fracture occurs at the ___ of the fifth metacarpal, often with ___ displacement of the distal fragment
neck of the 5th metacarpal; volar (palmar) displacement
The head of a metacarpal attaches to …
the finger joint (forms the MCP joint)
term for excess fluid in the blood
hypervolemia
Why doesn’t a mobile fluoroscopy unit require leaded drapes?
Because the mobile unit allows for more distance between the operator and the x-ray source
During a colostomy study of the large intestine, who should insert the catheter tip in the patient’s stoma? (2 answers)
the physician OR the patient (the stoma is very delicate, so the radiographer should not do this)
Why are k-shell characteristic x-rays the only characteristic x-rays useful for image production?
Because they are the only ones with enough energy to exit the tube and reach the patient.
The basic difference between the sievert and the other units that measure radioactivity…
the sievert is only used for radiation protection purposes
Evaluating an oblique L-spine, if the eye of the Scottie dog is projected on the anterior aspect of the vertebral body, this indicates that …
the patient was under-rotated
