Digital Imaging Flashcards

The first full-scale PACS was installed in 1993 in

A look-up table maps

Which of the following best describes the sequence for PSP image capture?

The earliest CT of the head took several hours to acquire a single slice of information.

True or False

DICOM is a standard that allows imaging modalities and PACS to communicate in the same language.

True or False

Film and intensifying screens are primarily used in

CR acquires an image through

The invention of CT is heralded as

Teleradiography incorporated _____ to produce radiographic images.

When switching from a conventional diagnostic radiography room to one that incorporates CR major equipment changes are to be expected.

True or False

Early reconstruction of raw CT data took a few _____ to form a recognizable image.

Early picture archival and communication systems were first developed

Technologist efficiency ratings are generally the same when comparing conventional radiography with _____ radiography.

Which modality was the first to use the principle of digital imaging?

Indirect capture DR converts absorbed x-ray energy into visible light.

True or False

Storage phosphor plates are similar to

The _____ converts x-ray energy directly to a digital electrical signal

Who was the first to incorporate digital imaging with the CT scanner

Exposure latitude is to conventional radiography as ____ is to DR.

The two elements needed to convert light signals into an electrical signal while using indirect capture DR are TFT and

Similar to CR, DR can use the existing diagnostic equipment found in today's imaging departments.

True or False

Present image annotation controls include all of the following except

In which decades was MRI first introduced

A bucky apparatus is required for DR.

True or False

Storage phosphor plates are made with an active element of barium fluorohalide. What is the activator in the storage phosphor plate?

Many PACS reading stations also have image-processing capabilities.

True or False

In a DR system, which of the following are needed to produce a radiographic image?

In conventional radiography film processing, the sensitivity speck has which electrical charge?

One of the early goals related to the development of PACS was to

All of the following are components of a PACS except

Teleradiography, moving images via telephone lines to and from remote locations, was first conceptualized by

In reference to PSP iamge capture, to release the latent image, which of the following devices is scanned over the phosphor plate?

With conventional radiography, optical density is primarily controlled by

X-ray energy related to indirect capture DR will stimulate a ____, which eventually is changed into an electrical signal

Intensifying screens

Which two modalities could easily be converted to digital image properties

The x-ray absorber typically used in direct capture DR is a

Compared with a 90-second processing time found in conventional radiography, image acquisition with DR has now been reduced to

Light exposing the film is in direct proportion to the amount and energy of the incident photon upon the screen.

True or False

The first commercial CT scanners could image the

The ability of a digital system to display subtle changes in shades of gray is called

If a pixel has a bit depth of 2 to the 9th, the number of gray tones that pixel can produce is

A system's ability to respond to varying levels of exposure, resulting in more detail, is referred to as

A perfect image processing system would have an MTF of

How dark or light a digital image appears on a display monitor is known as

The size of the pixel is determined by the

"The sum of the components in a recording system cannot be greater than the system as a whole" is a definition of

The efficiency of a system to convert x-ray input signal into a useful output image is known as

The more light spread, the ____ the MTF.

The range of exposure values the image detector is able to produce is known as