-
radipaque agents appear _____ on a film.
white
-
Linear curves show:
response that is directly related.
-
When interviewing a patient, What is it that the health care proffesional can observe?
objective signs
-
The effective energy of an x-ray beam in increased by increasing the:
- KvP and added filtration
- -added filtration keeps the low energy photons away.
-
Drugs that may be used to prolong blood clotting time are:
heparin
-
Among the following components which are part of the gantry of a CT imaging system?
x-ray tube and detector array
-
Which of the following are included in whole-body dose equivalents?
Gonads, lens
-
What does an AP obl projection of the elbow demonstrate?
- radial head free of superimpositon
- cepitulum of the humerus
-
Which of the following x-ray circuit devices operates on the principle of mutual induction?
high voltage transformer, filament transformer
-
mutual induction:
2 coils are in close proximity and a current is supplied to one of the coils.
-
Example of self induction:
autotransformer
-
another name for hirschsprung's disease is:
congenital megacolon
-
Advantages of high frequency generators over earlier types of generater includes:
- -smaller size
- -constant potential
- -lower patient dose
-
A radiograph exposed using a 12:1 ratio grid may exhibit loss of density at its lat edges b/c the:
- SID was to great
- --this causes grid cut-off
-
If the CR was off-center there would:
uniform loss of density
-
In amorphous selenium flat-panel detectors, the term amorphous refers to a:
- crystalline material lacking typical crystalline structure
- these are used in DR
-
The SC joints will be best demonstrated in which of the following positions?
anterior obliques
-
The output phosphor can be couples w/ the vidicon TV camera or CCD via:
fiber optics, an image distributor or lens
-
The control dosimeter that accompanies each shipment of personel radiation should be:
stored away from all other radiation sources.
-
Conitinous rotation of the CT x-ray tube and detector array, w/ simultaneous movement of the CT couch, has been accomplished through the implementation of:
slip rings
-
Late effects of radiation are considered to:
have no threshold, be directly related to dose.
|
|
