Shared Flashcard Set

Details

Final Study Guide
:-)
28
Health Care
Not Applicable
04/23/2012

Additional Health Care Flashcards

 


 

Cards

Term
What is the purpose of fluoroscopy?
Definition
Term
In a stationary fluoroscopy unit, where is the fluoroscopic x-ray tube located?
Definition
Term
What is the normal tube current during fluoroscopy?
Definition
Term
During fluoroscopy, which of the following is correct?
a. increasing kVp produces a longer scale of contrast
b. increasing mA lowers patient dose
c. increasing spot filming lowers patient dose
Definition
Term
What conversion occurs in the image at the input phosphor of an image intensifier tube?
Definition
Term
What conversion occurs in the iamge at the photocathode of the image intensifier tube?
Definition
Term
What is photoemission?
Definition
Term
What conversion occurs in the image at the output phosphor of an image intesifier tube?
Definition
Term
At what stage of image intensified fluoroscopy is the number of photons lowest?
Definition
Term
Of the following, what comes first in image intensifying?
a. photocathode
b. electrostatic focusing lenses
c. cesium iodide screen
e. zinc cadmium sulfide screen
Definition
Term
Of the following, what comes last in image intensifying?
a. photocathode
b. electrostatic focusing lenses
c. cesium iodide screen
e. zinc cadmium sulfide screen
Definition
Term
What are the functions of the electrostatic lenses in an image intensification tube?
Definition
Term
What is the process called when an image intensifier tube makes a dim image brighter?
Definition
Term
How is the image intensifier's input phosphor different from the output phosphor?
Definition
Term
What maintains the image brightness in a fluoroscopic system?
Definition
Term
Automatic brightness control (ABC) is designed to compensate for what?
Definition
Term
The flux gain of an image intensifier tube increases with an increase in what?
Definition
Term
What happens when a multifocus image intensifier tube is operated in the magnification mode?
Definition
Term
(True or False) When using a multifocus image intensifier tube in magnification mode resolution is improved.
Definition
Term
Which "mode" provide the largest field of view (FOV) in a 25/17/12 image intensifier tube?
Definition
Term
How is th electron beam in a television camera tube produced?
Definition
Term
Which component of the television monitor transfers the video signal into a visible image?
Definition
Term
What is currently the most widely used recording media in fluoroscopic studies for "dynamic" imaging?
Definition
Term
What is the most significant advantage for using a spot film camera over a spot film cassette?
Definition
Term
List the three types (major categories) of artifacts.
Definition
Term
List the major types of exposure artifacts.
Definition
Term
List the major types of processing artifacts.
Definition
Term
List the major types of handleing and storage artifacts.
Definition
Supporting users have an ad free experience!