Sensors and Digital Imaging Flashcards
Are film or digital better at creating higher resolution with greater acuity?
Film
Which film, D or F, is slower but gets a clearer image?
D fillm
How many sizes of sensors are there?
4
Which sensor size is used for pediatrics?
0
What sensor size is used for occlusal x-rays?
4
____ is the gel in film that contains crystals made of Ag and halides
Emulsion
______ can be conceived as a table with columns and rows,with each cell (aka pixel) being assigned a number value which is then assigned a gray intensity. The composite collection of pixel values are used by a computer’s software processing ability to construct an image for visual display
Digital image
derived from the wordsPEL(picture element).
A _____ is the smallest portion of a sensor, image or display that is capable of being recorded and then printed or displayed.
(pixel)
Are solid state sensors similar in size to films?
Yes
What are the 2 areas of sensors?
External size
Internal Active Area
______: portion of the sensor producing the image
Internal active area
Which direct digital system is quicker without the requirement of a Analog to digital convertor and the electric charge is converted within?
CMOS
Which direct digital system is much slower due to the signals being transferred from pixel to pixel to be digitized and the requirement of a Analog to digital convertor?
CCD
How thick are the solid state sensors?
4-6 mm
Most solid state sensors are CCD or CMOS today?
CMOS
