Flashcards in Review Chart 2 Deck (85)
How much inherent filtration can you expect your tube housing and its contents to have?
From which of the following does the electron cloud form?
At a set FFD and film size, the less collimation used the ________ the film will be?
The shutters of a collimator are made of which material?
The electron cloud is formed by which process?
If you are x-raying a 400 pound man's lumbar spine, how do you save your machine?
Using a decreased anode angle
You have taken an AP lumbo-pelvic film and notice a 2 inch white or very light band extending across the top of the radiograph. The bottom and lateral margins of it are properly exposed. The ischial tuberosities are within 1 inch of the bottom of the film. With this info, what went wrong?
Central ray is too low
Why do we want to filter out as many of the soft rays as possible?
They cause more scatter to reach the film
You've taken an AP thoracic radiograph and notice that the upper part of the spine is overexposed. What should you have done to get a better film?
Used a filter for the upper part of the film
Besides indicating anatomy of the patient, what is the advantage of the "Mitchell" marker?
It indicates recumbent or upright position
On a film, you see a wide light vertical band on one side of the film and the patient's spine is off center toward the left. You say that the patient was properly centered to the grid cabinet. What went wrong?
The film wasn't pushed in all the way
If you can't afford digital imaging, what should you get?
Radon comes to us in which form?
Give or take a little, natural background radiation accounts for about how much of our average annual exposure to ionizing radiation?
What is the term for the beneficial effect of radiation?
What is NOT a property of x-ray?
They are stored in matter (NOT TRUE)
How many rads are in a gray?
Which unit of measurement is usually used for reporting occupational exposure to radiation?
What year did BJ Palmer introduce x-ray into the chiropractic profession?
The focal spot size is usually set in conjunction with which of the following?
Low voltage circuit
What would happen if you lengthen the time of an exposure?
You would increase the number of photons hitting the patient
Which primary factor is responsible for the quality of an x-ray beam?
The mA setting determines what?
Current going through the filament
What would have the least fluctuation in the kV level?
What propels the electrons in an x-ray tube?
A tube warm-up procedure should be performed by using how many exposures?
Which part of an x-ray tube is the target located in?
Anode (target, stem, roter)
The first place that attenuation of any part of the x-ray beam occurs is at which point?
The term "thermionic emission" is most closely related to what?
The cloud of electrons at the filament