Quiz 17/18 (Bush) Flashcards
The science of ______________ is the study of the response of the human eye to light.
photometry
What is the basic photometric unit?
Lumen
The cosine law is used to describe ___________________________.
luminous intensity of a digital display device
The decreasing luminous intensity with increasing distance from the source of light follows _____________________.
the inverse square law
A digital display monitor is best viewed ______________.
straight on
Almost all digital images in medical imaging are viewed and interpreted on a __________________.
digital display device
Almost all medical flat panel digital display devices are _______________.
monochrome liquid crystal displays (LCDs)
Medical flat panel display devices are identified by the ___________________.
number of pixels
The ambient light at a digital image workstation should be ______________.
near darkness
Preprocessing the digital image is done _____________, and post-processing is done ______________.
automatically; manually
Flatfielding is accomplished through automatic calibration images called _____________ and _______________.
offset images; gain images
T or F: The purpose of image subtraction is to enhance contrast.
true
T or F: Spatial resolution improves with the use of higher megapixel digital display devices.
true
PACS stands for _______________________________________.
Picture Archiving and Communication Systems
Which is not a part of PACS?
Electronic medical record
Radiology Information Systems (RIS) is used for which of the following?
Schedules, protocol descriptors, and diagnostic conclusions
The principal components of a PACS are the ________________.
image acquisition system, display system, network, and storage system
Within a PACS network the secretarial workstation and the viewing workstation would both be called ________________.
clients
The process of remote transmission and viewing of medical images is known as ________________.
teleradiology
The national standard for image transmission in teleradiology is the ____________ format.
DICOM
Text data and email are generated at a _____________________________ workstation in PACS.
Radiology Information System (RIS)
Image file size is determined by ________ size and grayscale bit depth.
matrix
The term network is used to describe the _____________.
manner many computers can be connected
What does DICOM stand for?
Digital Imaging and Communications in Medicine
Which medical information organization is working to make patient radiation dose ALARA?
ACR
T or F: PACS implements and speeds image processing, viewing, interpretation, storage, and recall.
true
T or F: Teleradiology allows for intercontinental image interpretation.
true
T or F: The electronic medical record is incorporated into the Radiology Information System (RIS).
false
T or F: The Current Procedural Terminology (CPT codes), developed by the American Medical Association (AMA), created codes for a specific clinical situation.
true
Accession Numbers are specific numbers that are assigned to a patients exam they are attached to each ___________ in that exam which in turn attaches a ___________ to that specific patients exam after a radiologist has performed their dictated interpretation.
image, report