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RADT465Image Acq.
ARRT registry review covering Image Acquistion and Evaluation
| Question | Answer |
|---|---|
| A series of variable instructions used in x ray imaging | Algorithm |
| What is HVL affected by | kVp and beam filtration |
| what is the grid interspace material made of | aluminum and plastic fiber |
| what part of the CR image plate records the radiologic image | photostimulable phosphor |
| line-spread function and line pairs per millimeter are used to express | resolution |
| photon wavelength is inversely related to | photon energy |
| the luminescent light emitted by the PSP is transformed into the image seen on the CRT by the | ADC |
| the radiation dose received by the digital detector for each image is indicated by | exposure indicator |
| potential postprocessing tasks include | annotation and inversion/reversal |
| solid-state detector receptor plates, a direct-capture imaging system, and immediate image display are all characteristics of what form of imaging | DR |
| compared wit ha low-ratio grid, a high-ratio grid will | absorb more scattered radiation and absorb more primary radiation |
| a term used to describe unsharp edges of tiny radiographic details | blur |
| focal spot blur is greatest on which end of the x ray beam | the cathode end |
| the image plate front material can be made of | carbon fiber or magnesium |
| what materials can be used to make the grid interspace | plastic or aluminum |
| an increase in kilovoltage applied to the x ray tube increases the | exposure rate |
| the correct order of the radiographic film processing | developer, fixer, washer, dryer |
| exposure rate will decrease with an increase in | SID |
| a pathological condition that will require a decrease in technique | osteoporosis |
| a device that is used to overcome variation in patient anatomy or tissue density that provides more uniform receptor exposure | compensating filter |
| what is the effect of scattered radiation on a radiographic image | fog |
| the function of the of the developer in film processing | change the exposed silver bromide crystals to black metallic silver |
| in digital imaging the mAs selection has an effect on | receptor exposure and patient dose |
| what is the purpose of the thin layer of lead that is often located in the rear portion of an IP | to prevent scattered radiation fog |
| the purpose of the electroconductive layer of a CR PSP plate | facilitate transportation through the scanner/reader |
| the x ray image seen on the computer display monitor is a | analog image |
| in digital imaging as DEL size decreases what happens to spatial resolution | it increases |
| what test requires two exposures to evaluate focal spot accuracy | slit camera |
| brightness and contrast resolution in digital imaging can be influenced by | window level, window width, and look up table |
| a feature used to display RIS information on current patients | modality work list |
| REFERENCES: Lange Q&A Radiography Examination 10th Edition |
Created by:
tnwhitfiel
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