Chapter 25 questions Flashcards
a small detector that is placed intraorally to capture the radiographic image.
sensor
an image receptor found in the intraoral sensor.
CCD-charged-coupled device
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 scans the plate and produces an image on a computer screen.
storage phosphor imaging
to convert an image into digital form that, in turn, can be processed by a computer.
digitize
a method of obtaining a digital image in which an intraoral sensor is exposed to x-rays to capture a radiographic image that can be viewed on a computer monitor.
direct digital imaging
a discrete unit of information; a picture element.
pixel
a 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
a method 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.
digital radiography (imaging)
in digital imaging, the term used to describe the picture that is produced is radiograph?
false: digital imaging
digital imaging requires more x-radiation than does conventional radiography?
false: requires less radiation
the sensor is more sensitive to x-rays
the x-radiation source used in most digital imaging systems is a conventional dental x-ray unit.
true
compared w/film emulsion, the pixels used in digital imaging are structured in an orderly arrangement.
true
all intraoral sensors can be heat-sterilized after use.
false: must be covered with a disposable barrier or sleeve because they cannot w/stand heat sterilization
the preferred exposure method for intraoral digital imaging is the paralleling technique.
true
one advantage of a digital imaging system is the superior gray-scale resolution that results.
true
digital subtraction is an advantage in digital imaging because distracting background information is eliminated from the image
false
the manipulation of the original digital images can be considered a legal issue
true
digital imaging was introduced to dentistry in:
1987
digital imaging can be used for:
- detecting conditions of the teeth and surrounding structures
- evaluating growth and development of the jaws
- confirmation of suspected diseases
digital imaging requires less radiation than does conventional radiography because:
the sensor is more sensitive to x-rays
the method of obtaining a digital image similar to scanning a photograph to a computer screen is termed:
indirect digital imagining
the image receptor found in the intraoral sensor is termed:
CCD (charge couple device)
digital imaging systems can be used for:
bite-wing images
