LMRT STATE REVIEW EXAM 2023/2024 Questions with Answers

how much radiation was absorbed into the phosphors - correct answers indicator number. 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. - correct answers image stitching allow the technologist to inset preset text or manual text on the image - correct answers image annotation Ability to distinguish anatomic structures having similar subject contrast - correct answers contrast resolution (digital) Refers to the amount of detail present in any image. Phosphor layer thickness and pixel size determines resolution in CR. - correct answers spatial resolution A single square within a matrix - correct answers pixel a series of very small boxes that form a digital image - correct answers matrix. 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 - correct answers direct conversion. component which light enters and is converted into video or electronic signal - correct answers charged coupled device. used to read charges collected during an exposure - correct answers thin film transistor. A silicon solid state device sensitive to light. Converts light into an electrical signal. - correct answers photodiode Amorphous silicon requires a _____ such as cesium iodide or a rare earth intensifying screen composed of gadolinium and lanthanum with oxysulfides. This also converts x-rays to visible light. - correct answers scintillator a type of digital detector employing amorphous silicon or selenium detector material, bonded with thin-film transistor technology for digital image creation and amplification - correct answers flat panel detector 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. - correct answers density 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 - correct answers automatic exposure controll , What uses AC and DC power converters to change the incoming line from 60Hz to 6000Hz? - correct answers high frequency generator ... - correct answers three phase generator produce a pulsating current that alternates from positive to negative and are power by a single source of ac - correct answers single phase generator A device that permits current to flow through it in only one direction - correct answers diode The process of converting AC to DC. - correct answers rectification . . . .. . . . . .. . . . .. .