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DF Principles
DF Terms
DF Images
CCD
CT
100
Minimum number of monitors are used for DF
What is two?
100
Type of Image Display that is rapidly replacing the CRT
What is Flat Panel Image technology?
100
Timed-interval delay mode is principally used in __________ imaging.
What is cardiac?
100
CCD are initials for ______________
What is charged-coupled device?
100
The first generation of CT used ___________ detectors
What is one?
200
The radiation dose rate for DF is __________ compared to continuous analog fluoroscopy.
What is lower?
200
What two subtraction capabilities are available with DF?
What is temporal and energy subtraction?
200
The principal advantage of DF examinations
What is the image subtraction techniques that are possible that give enhance visualization of vessels after injection of contrast media?
200
Definition of a CCD
What is a light-sensing element in digital cameras?
200
The drawback of the first generation CT
What is long scanning time?
300
Placement of the x-ray during DF?
What is under the table?
300
The act of ensuring that no extraneous light from the viewbox enters the viewer's eye
What is masking?
300
Two results of image integration
What are improved contrast resolution and increased patient radiation dose?
300
Type of material a CCD is made of
What is silicon?
300
Disadvantage of the second generation CT
What is increased beam scatter?
400
In DF, spatial resolution is determined by these two things
What are image matrix and the size of the image intensifier?
400
Method of temporal subtraction that results in successive subtraction images of contrast-filled vessels
What is mask mode?
400
Has less motion artifacts than temporal subtraction
What is energy subtraction?
400
CCD used in a DF system provides _________patient dose and higher _____________ as compared to conventional fluroscopy
What is lower patient dose and higher light sensitivity?
400
Advantage of second generation CT
What is reduction in scanning time?
500
Mathematical formula for DF Pixel Size
What is Image Intensifier size/matrix?
500
In mask mode, the __________ image is shown on monitor B, and the _________ image is shown on monitor A
What is mask and subtracted?
500
The time it takes to turn on the digital fluoroscopy x-ray tube and reach the selected mA and kVp is called ____________ time
What is interrogation?
500
A CCD in DF provides these three advantages
What are high DQE, high signal to noise ratio, and high spatial resolution?
500
Advantage of third generation CT?
What is further reduction in scanning time and scattered radiation?