Chapter 25 Digital Imaging
Digitize
To convert an image into digital form that, in turn, can be processed by a computer
True or False Compared with film emulsion, the pixels used in digital imaging are structured in an orderly arrangement
True
True or False Digital subtraction is is an advantage in digital imaging because distracting background information is eliminated from the image
True
True or False One advantage of a digital imaging system is the superior gray-scale resolution that results
True
True or False The manipulation of original digital images can be considered a legal issue
True
True or False The preferred exposure method for intraoral digital imaging is the paralleling technique
True
True or False The x-radiation source used in most digital imaging systems is a conventional dental x-ray unit
True
The image receptor found in the intraoral sensor is termed a. CCD b. pixel c. Semiconductor chip d. Software
a. CCD
Digital imaging requires less radiation than does conventional radiography because: a. The sensor is larger b. The sensor is more sensitive to x-rays c. The exposure time is increased d. The pixels sense transmitted light quickly
b. The sensor is more sensitive to x-rays
Digital imaging was introduced to dentistry in: a. 1967 b. 1977 c. 1987 d. 1997
c. 1987
All of the following are advantages of digital imaging except: a. Digital subtraction b. The ability to enhance the image c. Size of the intraoral sensor d. Patient education
c. Size of the intraoral sensor
Digital imaging can be used for: a. Detecting conditions of teeth and surrounding structures b. Evaluating the growth and development of jaws c. Confirmation of suspected disease d. All of the above
d. All of the above
Digital imaging systems can be used for which images: a. Bite-wing b. Panoramic c. Cephalometric d. All of the above
d. All of the above
Sensor
A detector that is used to capture the dental image.
Pixel
A discrete unit of information; a picture element.
Digital radiography
A filmless imaging system; a method of capturing an image using a sensor, breaking the image into electronic pieces, and presenting and storing the image using a computer
Storage phosphor imaging
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.
Direct digital imaging
A method of obtaining a digital image in which an intraoral sensor is exposed to x-rays to x-rays to capture an image that can be viewed on a computer monitor.
Digital subtraction
A method of reversing the gray scale as a digital image is viewed.
Charged-coupled device
An image receptor found in the intraoral receptor
True or False Digital imaging requires more x-radiation than conventional radiography`
False
True or False In digital imaging, the term used to describe the picture that is produced is radiograph
False
True or False All intraoral sensors can be heat-sterilized after use
False