LMRT State Review Exam Solved 100%

indicator number - Answer how much radiation was absorbed into the phosphors image stitching - Answer 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. image annotation - Answer allow the technologist to inset preset text or manual text on the image contrast resolution (digital) - Answer Ability to distinguish anatomic structures having similar subject contrast spatial resolution - Answer Refers to the amount of detail present in any image.Phosphor layer thickness and pixel size determines resolution in CR. pixel - Answer A single square within a matrix matrix - Answer a series of very small boxes that form a digital image direct conversion - Answer 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 - Answer component which light enters and is converted into video or electronic signal thin film transistor - Answer used to read charges collected during an exposure photodiode - Answer A silicon solid state device sensitive to light. Converts light into an electrical signal. scintillator - Answer 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 - Answer 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 - Answer 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 - Answer 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 - Answer , What uses AC and DC power converters to change the incoming line from 60Hz to 6000Hz? three phase generator - Answer ... single phase generator - Answer produce a pulsating current that alternates from positive to negative and are power by a single source of ac diode - Answer A device that permits current to flow through it in only one direction rectification - Answer The process of converting AC to DC. filament circuit - Answer 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 - Answer Purpose is to provide high electrical potential needed to accelerate electrons from cathode to the anode. Controlled by kVp. autotransformer - Answer Provides a variable yet predetermined voltage to the high-voltage step-up transformer. It acts as the kilovoltage selector. exposure switch - Answer closes the circuit and allows current to flow though primary side of step up transformer recorded detail - Answer 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 - Answer ... sid - Answer ... OID - Answer ... quantom mottle - Answer 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 ____) control consol - Answer The unit inside the control booth, where the operator sets all of the exposure techniques, such as: kilovolts peak, milliampheres, and exposure time. contrast - Answer shades of gray on an image x ray generator - Answer ... heat units - Answer The formula, mA x kVp x time, is used to determine what the maximum heat capacity of the anode of the x-ray is rated in terms of: - Answer heat units back up timer - Answer what is set in case of failure in AEC phototimer - Answer ...