wk 8 Flashcards
what would have to be done to the mAs or KVp to radiograph a thorax
1/2 base for mAs; KVp wouldn’t change
the FOV for a lateral thorax
thoracic inlet to costophrenic angles
on a lateral thorax, the beam would be centered where
on heart or caudal scapula
an obese dog’s thorax is to be radiographed, what changes would be made to mAs or KVp
use base mAs; KVp wouldn’t change
diaphragmatic hernia
hole or tear in diaphragm from inherited or trauma
for optimum viewing of the lung, exposure should be made when
peak inspiration where diaphragm is pushed down so more of thoracic cavity is seen
under measuring an animal will have what effect on the film
too light; not enough penetrating power
scale of contract for thorax
long
fluid in the chest would cause the mAs and KVp to be adjusted how
base mAs; KVp won’t change
metastasis in the lungs
secondary malignant growths/masses; they started somewhere else and ended up in the lungs
number of cervical vertebrae
7
number of thoracic vertebrae
13
number of lumbar vertebrae
7
number of caudal vertebrae
depends on the breed
2 things required for x-rays of the spine
sedation and stretching
scale of contrast for spine
short
amount of abdominal mAs required for spinal x-rays
2 X base
reasons why an x-ray of spine may be requested
- evaluate condition of the vertebrae
- fractures
- wobblers syndrome
- ataxia
- arthritis
- soft tissue tumors involving spine
- bone tumors
if the patient was over measured for an x-ray of the spine, what will the final radiograph look like
too dark
the x-ray you have just taken was exposed to light on the way to the darkroom and then processed
it will be black
what does static electricity do to a film
black streaks lightning like across the film
the clear border which is usually around the film is caused by
the collimator deciding what gets exposed on the film
not centering the x-ray beam to the table and then taking an x-ray using the Bucky will result in
grid cut off
who cannot assist in radiographs
people under 18
when converting from table top to a grid in a Bucky tray, what applies to the mAs using 12:1 grid
5 X mAs
radiographic positions are described by
- direction the x-ray beam travels through the body to the film
- by the surface of the body adjacent to the film
