Lmrt state review
image annotation - ✔️✔️allow the technologist to inset preset text or manual text on the
image
contrast resolution (digital) - ✔️✔️Ability to distinguish anatomic structures having
similar subject contrast
spatial resolution - ✔️✔️Refers to the amount of detail present in any image.Phosphor
layer thickness and pixel size determines resolution in CR
indicator number - ✔️✔️how much radiation was absorbed into the phosphors
image stitching - ✔️✔️stitching together multiple images - useful for scoliosis studies of
the spine, long bone studies or angiographic imaging of peripheral vasculature. - to view
as a single image.
pixel - ✔️✔️A single square within a matrix
matrix - ✔️✔️a series of very small boxes that form a digital image
direct conversion - ✔️✔️one step process in DR where flat panel detectors convert the
x-ray energy directly to an electric signal using an amorphous selenium detector for
immediate viewing
charged coupled device - ✔️✔️component which light enters and is converted into
video or electronic signal
thin film transistor - ✔️✔️used to read charges collected during an exposure
photodiode - ✔️✔️A silicon solid state device sensitive to light. Converts light into an
electrical signal.
scintillator - ✔️✔️Amorphous silicon requires a _____ such as cesium iodide or a rare
earth intensifying screen composed of gadolinum and lanthanum with oxysulfides. This
also converts x-rays to visible light.
flat panel detector - ✔️✔️a type of digital detector employing amorphous silicon or
selenium detector material, bonded with thin-film transistor technology for digital image
creation and amplification
density - ✔️✔️It is the degree of blackening of a radiograph resulting from radiation
exposure and processing and one of the two photographic properties that comprise
visibility of detail.
, automatic exposure controll - ✔️✔️a device that measures the quantity of radiation that
reaches the image receptor and automatically terminates the exposure when the image
receptor has received the required radiation intensity
high frequency generator - ✔️✔️, What uses AC and DC power converters to change
the incoming line from 60Hz to 6000Hz?
three phase generator - ✔️✔️...
single phase generator - ✔️✔️produce a pulsating current that alternates from positive
to negative and are power by a single source of ac
diode - ✔️✔️A device that permits current to flow through it in only one direction
rectification - ✔️✔️The process of converting AC to DC.
filament circuit - ✔️✔️low-voltage circuit; uses 3-5 volts, regulates the flow of electrical
current to the filament of the x-ray tube; controlled by mA settings
high voltage circuit - ✔️✔️Purpose is to provide high electrical potential needed to
accelerate electrons from cathode to the anode. Controlled by kVp.
autotransformer - ✔️✔️Provides a variable yet predetermined voltage to the high-
voltage step-up transformer. It acts as the kilovoltage selector.
exposure switch - ✔️✔️closes the circuit and allows current to flow though primary side
of step up transformer
recorded detail - ✔️✔️Sharpness of the structural edges of the radiographic image.
Describes the degree of geometric sharpness or accuracy of the structural lines
recorded in the image.
exposure time - ✔️✔️...
sid - ✔️✔️...
OID - ✔️✔️...
quantom mottle - ✔️✔️refers to the random nature by which x-rays interact with IR,
under the control of radiographer and is principal contributor to radiographic noise (the
use of high mAs, low kVp settings and slower IR's reduces ____)
image annotation - ✔️✔️allow the technologist to inset preset text or manual text on the
image
contrast resolution (digital) - ✔️✔️Ability to distinguish anatomic structures having
similar subject contrast
spatial resolution - ✔️✔️Refers to the amount of detail present in any image.Phosphor
layer thickness and pixel size determines resolution in CR
indicator number - ✔️✔️how much radiation was absorbed into the phosphors
image stitching - ✔️✔️stitching together multiple images - useful for scoliosis studies of
the spine, long bone studies or angiographic imaging of peripheral vasculature. - to view
as a single image.
pixel - ✔️✔️A single square within a matrix
matrix - ✔️✔️a series of very small boxes that form a digital image
direct conversion - ✔️✔️one step process in DR where flat panel detectors convert the
x-ray energy directly to an electric signal using an amorphous selenium detector for
immediate viewing
charged coupled device - ✔️✔️component which light enters and is converted into
video or electronic signal
thin film transistor - ✔️✔️used to read charges collected during an exposure
photodiode - ✔️✔️A silicon solid state device sensitive to light. Converts light into an
electrical signal.
scintillator - ✔️✔️Amorphous silicon requires a _____ such as cesium iodide or a rare
earth intensifying screen composed of gadolinum and lanthanum with oxysulfides. This
also converts x-rays to visible light.
flat panel detector - ✔️✔️a type of digital detector employing amorphous silicon or
selenium detector material, bonded with thin-film transistor technology for digital image
creation and amplification
density - ✔️✔️It is the degree of blackening of a radiograph resulting from radiation
exposure and processing and one of the two photographic properties that comprise
visibility of detail.
, automatic exposure controll - ✔️✔️a device that measures the quantity of radiation that
reaches the image receptor and automatically terminates the exposure when the image
receptor has received the required radiation intensity
high frequency generator - ✔️✔️, What uses AC and DC power converters to change
the incoming line from 60Hz to 6000Hz?
three phase generator - ✔️✔️...
single phase generator - ✔️✔️produce a pulsating current that alternates from positive
to negative and are power by a single source of ac
diode - ✔️✔️A device that permits current to flow through it in only one direction
rectification - ✔️✔️The process of converting AC to DC.
filament circuit - ✔️✔️low-voltage circuit; uses 3-5 volts, regulates the flow of electrical
current to the filament of the x-ray tube; controlled by mA settings
high voltage circuit - ✔️✔️Purpose is to provide high electrical potential needed to
accelerate electrons from cathode to the anode. Controlled by kVp.
autotransformer - ✔️✔️Provides a variable yet predetermined voltage to the high-
voltage step-up transformer. It acts as the kilovoltage selector.
exposure switch - ✔️✔️closes the circuit and allows current to flow though primary side
of step up transformer
recorded detail - ✔️✔️Sharpness of the structural edges of the radiographic image.
Describes the degree of geometric sharpness or accuracy of the structural lines
recorded in the image.
exposure time - ✔️✔️...
sid - ✔️✔️...
OID - ✔️✔️...
quantom mottle - ✔️✔️refers to the random nature by which x-rays interact with IR,
under the control of radiographer and is principal contributor to radiographic noise (the
use of high mAs, low kVp settings and slower IR's reduces ____)
