IP
window width determines ______?
image contrast
what does EMR stand for?
electronic medical record
what is:
small in size, computers are connected with wireless access points or cables, very fast.
local area network (LAN)
in regard to beam restriction, light field to radiation field alignment, the alignment must be within ________ of the SID?
plus or minus 2% of the SID
what exposure levels are used when testing reproducibility?
0.1 mR, 1.0 mR, 10 mR
a wider window width will result in _______?
long gray scale (low image contrast)
what does EHR stand for?
electronic health record
what is Digital Imaging and Communication in Medicine (DICOM)?
accepted standard for networked medical devices to exchange images and information.
in regard to beam restriction, positive beam limitation, collimator controls must be within ________ of the SID?
2% of the SID
what is the acceptable variation for reproducibility?
plus or minus 5%
a narrow window width will produce _______?
narrow gray scale (high image contrast)
what is a network?
consists of atleast two computers that share information and resources.
what is Picture Archival and Communication System (PAC's)?
stores, shares, and lets you view medical images on computers using a network. uses the DICOM standard
what is tested during linearity checks?
mR/mAs output at different mA and time settings.
imaging plates that have been unexposed for longer than _______ should be erased?
24-48 hours.
in regard to information systems, Hospital information systems (HIS) contain ______?
full patient information
what are the two types of networks?
what is:
process of remote transmission and viewing of images
teleradiology
what is the acceptable variation for linearity?
plus or minus 10%
lead aprons and gloves should be tested _______?
annually
in regard to information systems, radiology information system (RIS) contains ________?
radiology specific information about a patient including the radiologist's report
what is:
spans great distances such as city, states or even the world?
wide area network (WAN)
laser image receptor digitizers use a ___________ for conversion of _________?
1. helium-neon laser beam
2. analog images into digital images.
what is reproducibility in quality control?
multiple exposures made at same time settings (80 kVp, filtration, no grid) at different exposure levels.
aprons and gloves can be tested by using ______?
a fluoroscope and identifying possible cracks