What is Picture Archiving and Communication Systems
100
When comparing "work station" monitors to "Physician interpretation monitors," the work station monitor allows what?
What is they allow users to perform digital post processing of images for the purpose of enhancing diagnosis
100
If the number of ______ increase on a monitor, resolution ______.
What is pixels;improves
100
Which is the most interactive part of a PACS?
What is display workstation
100
In which system architecture do the acquisition modalities send their images directly to a designated workstation?
What is distributed system
200
The two popular compression methods for use in digital radiography are..?
What is lossless, or reversible, and lossy, or irreversable
200
Which function represents the range of gray values that are being viewed on the monitor?
What is windowing
200
Which of the following are considered PACS architectures?
1. Distributed system
2. Client/server-based system
3. Web-based system
What is 1,2 and 3
200
Any computer that a health care worker uses to view a digital image is a(n) ______.
What is a display workstation
300
Which term describes the act of keeping a complete copy of the archive in another remote location?
What is disaster recovery
300
Which of the following are commonly used as long-term storage for DICOM images?
What is digital linear tapes and optical disks
300
Which PACS component interfaces with the radiology information system and hospital information system?
What is image manager
300
A universally accepted standard for exchanging medical imaging via a networked set of display workstations, archive, and imaging modalities is
What is DICOM
300
Computers operate from a "binary machine language" consisting of information recorded as either "0" or "1". Each number is a bit which means a ...
What is binary digits
400
An image manipulation process that fills in the background so that it is darkened is known as ______.
What is shuttering
400
Which of the following would be considered categories of workstation functions?
1. Navigation functions
2. Image manipulation and enhancement functions
3. Image management functions
What is 1,3 and 3
400
Which of the following are true regarding the image manager?
1. Contains the master database of all on the
archive
2. Controls the receipt of all images
3. Contains blue laser technology
What is 1 and 2
400
The phosphor used in digital imaging is required for the purpose of "scintillation". This term may be understood as the phosphors ability to...
What is a flat panel type: uses amorphous silicon and a thin film transistor (TFT) array. A scintillator-based flat-panel detector converts the x-ray beam to light and then that light is converted into electrons to create an image.
400
Image cature(acquisition) and image viewing (display) differ when comparing analog to digital technologies. Whereas film may age and discolor due to its "analog" nature, the computer representations of similar information are always ...
What is discrete
500
What refers to the sensitivity of the film to radiation, and is inversely proportional to the exposure?
What is film speed
500
Whats considered the brains of the computer?
What is the CPU(central processing unit)
500
What stores the energy from its interaction with an x-ray beam.
What is Photostimulable phosphor
500
a measure of a receptor's ability to create an output signal that accurately represents the input signal (x-ray beam) is what?
What is Detective Quantum Efficiency(DQE)
500
What holds electrons elevated to a higher than resting energy level?