Chapter 7
if the circuit is open and no current passes through, it is assigned a value of
what is 0?
minimum recommended standard of a twisted pair of wire
what is category 5 cable?
describe mini PACS
what is A PACS system used for a single modality such as CT, X-ray or MRI and not shared with other modalities?
name 2 of the 4 advantages of a EHR
-easy navigation
- reduces duplications
- info is immediately available
- provides reminders
name the 3 general areas that define digital image quality
what is contrast, resolution, and noise?
the intermediary between the operating system and the hardware is
what is BIOS?
what is a client based network?
the server processes the resource as requested by the client and returns only the results back to the client
define ROI (regions of interest)
what is determines pixel intensity in a certain area
difference between the conceptual model and the computational model
what is conceptual model only shows relevant information/data and computational model is where relevant information is used to make comparisons?
who does this reestablish baseline values?
who is the physicist?
response rate definition
what is "how fast the monitor rewrites the screen or the number of times the image is redrawn on the display each second"?
after an image has been captured, all of the demographic information and information about the actual capture of the image is recorded in the
what is image header?
name 3 of the 6 advantages of a LCD monitor
what is decreased in price, increased in quality, requires less maintenance, gives more light, nice size/resolution, and lack of heat production?
how often is the workstation processing speed/image transfer speed checked?
what is weekly at acceptance to establish patterns and monthly if no changes are noted?
what is this describing?
- maintenance of equipment
- image acquisition
- processing standards
what is total quality management TQM?
how does LCDs produce images
what is by shining or reflecting light through a layer of liquid crystal and a series of color filters?
which layer of a network protocol moves bits from one place to another
what is layer 1?
what is RAID 3?
Data are striped across all of the disks like RAID 0, but there is one disk set aside for error correction, the parity disk
what does ICD-10-CM?
tags info so user can find a specific anatomic part
how often does a technologist do this?
clean imaging plates
what is monthly? page 178 chapter 13
give an example of one of the operating systems:
real-time os
single user single task
single user multitask
multiuser multitask
real-time os: digital X-ray consoles found on modern X-ray equipment
single user single task: palm OS for the handheld personal organizer
single user multitask: OS on a PC
multiuser multitask: UNIX running on a large server or as a mainframe computer supporting an entire company
the client-based network is similar to what network and why
what is server-based network because it has a centralized computer that controls the operations of the network?
Describe the difference between short-term and long-term storage
what is Short-term is online and available within 3-5 seconds; long-term is near line and must be retrieved from a storage device and brought to a RAID, which can take 1-5 minutes.
what are the 3 major categories of QC testing
what is acceptance testing, routine maintenance, and error maintenance?
general system inspection
what is daily?