DEN 112 CH 25

A sensor with a fiber optic cable linked to the computer is placed into the mouth of the patient and exposed to x-radiation. This is an example of
A. phosphor imaging.
B. direct digital imaging.
C. indirect digital imaging.
D. use of the CCD camera.
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A sensor with a fiber optic cable linked to the computer is placed into the mouth of the patient and exposed to x-radiation. This is an example of
A. phosphor imaging.
B. direct digital imaging.
C. indirect digital imaging.
D. use of the CCD camera.
B. direct digital imaging.
Sensors that cannot be sterilized
A. require complete coverage with disposable plastic sleeves for each patient.
B. should be disposed of between patients.
C. are placed in an immersion disinfectant for an appropriate amount of time between each patient.
D. are wiped off with a surface disinfectant (iodophor) between patients.
A. require complete coverage with disposable plastic sleeves for each patient.
Digital sensors contain distinct units of programmable gray values that are sensitive to x-rays called
A. a field arrangement.
B. a grid.
C. pixels.
D. phosphors.
C. pixels.
How does the CMOS detector differ from the CCD detector?
A. The CMOS detector is less durable than the CCD detector.
B. The CMOS detector is more expensive to produce than the CCD detector.
C. The CMOS detector is currently manufactured by one company and claims 25% less resolution than the CCD detector.
D. The CMOS detector is silicon-based and differs from the CCD detector in the way that the pixels are read.
D. The CMOS detector is silicon-based and differs from the CCD detector in the way that the pixels are read.
With digital imaging, the term ___________ is used to describe the pictures that are produced.
A. image
B. x-ray film
C. phosphor
D. radiograph
A. image
How many shades of gray can the human eye distinguish? A. *32
B. 64
C. 16
D. 256
A. *32
Storage phosphor imaging
A. is a wired digital imaging system.
B. uses a reusable imaging plate.
C. is a form of direct digital imaging.
D. uses a sensor with a fiber optic cable.
B. uses a reusable imaging plate.
It is questionable whether digital images can be used as evidence in lawsuits, because
A. digitized images cannot be transported across state lines.
B. a "hard copy" of the image does not exist.
C. the original digital image can be enhanced.
D. the images are inferior to film.
C. the original digital image can be enhanced.
Digital imaging uses _________________ to produce an image.
A. an x-ray processor
B. processing chemistry
C. an electronic sensor and computerized imaging system
D. radiographic film
C. an electronic sensor and computerized imaging system
The images are cleared from the storage phosphor imaging plates by
A. being processed in an x-ray processing machine.
B. being exposed to viewbox light for several minutes.
C. a clearing step within the scanner.
D. being placed in a microwave oven for 1 minute.
C. a clearing step within the scanner.