LP2 Chapter 25 Flashcards
(27 cards)
What is a small detector that is placed intraorally to capture the radiographic image?
Sensor
What is an image receptor found in the intraoral sensor called?
charge-coupled device
What is a form of indirect digital imaging in which the image is recorded on phosphor-coated plates and then placed into an electronic processor where a laser scan the plate and produces an image on a computer screen.
storage phosphor imaging
The process that converts an image into digital form, which, in turn, can processed by a computer is called what?
digitize
What method is used to obtain a digital image in which and intraoral sensor is exposed to x-rays to capture a radiographic image that can be viewed on a computer monitor.
direct digital imaging
What is a discrete unit of information; picture element called?
Pixel
What is the method of obtaining a digital image, in which an existing radiograph is scanned and converted into a digital form using a CCD camera?
indirect digital imaging
What is the method called of reversing the gray scale as a digital image is viewed?
Digital subtraction.
A filmless imaging system; a method of capturing a radiographic image using a sensor, breaking the image into electronic pieces, and presenting and storing the image using a computer is called what?
Digital radiography
True or False; in digital radiography, the term used to describe the picture that is produced is radiograph.
false
True or False; Digital radiography requires more x-radiation that conventional radiography.
False
True or False; The x-radiation source used in most digital radiography systems is a conventional dental x-ray unit.
True
T or F; Compared with film emulsion, the pixels used in digital radiography are structured in an orderly arrangement.
True
T or F; All intraoral sensors can be heat sterilized after use.
False
T or F; The preferred exposure method for intraoral digital radiography is the paralleling technique.
True
T or F; One advantage of a digital radiography system is the superior gray-scale resolution that results.
True
T or F; Digital subtraction is an advantage in digital radiography because distracting background information is eliminated from the image.
True
T or F; the manipulation of the original digital images can be considered a legal issue.
True
When was digital radiography introduced to dentistry?
1987
What can digital radiography be used for?
- detecting conditions of teeth and surrounding structures
- Evaluating growth and development of the jaws
- Confirmation of suspected disease.
Why does digital radiography require less radiation then conventional radiography?
The sensor is more sensitive to x-rays.
What method obtains the digital image similar to scanning a photo to a computer screen?
Indirect digital imaging.
What is the image receptor found in the intraoral sensor called?
CCD
What does the CCD contain that makes it sensitive to light or x-rays?
Silicon
