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wk12RAD107

QuestionAnswer
Image intensified fluoroscopy is performed at illumination levels similar to ________. radiograph viewing
Visual acuity in the eye is greatest at the ___________, where _____ are concentrated. fovea centralis; cones
The combination of temporal and energy subtraction techniques is called _________. hybrid subtraction
Fluoroscopy for an air contrast barium enema is generally done at _____ kVp. 80 to 90
The American Cancer Society recommends that all women _____ years of age and above have an annual screening mammogram. 50
The second-generation CT scanners had the disadvantage of increased ____________. beam scatter
The pixel size is reduced when the _______ size is increased and the _____________ size is fixed. matrix; field of view
Each sweep of the source-detector around the body during CT is called a __________. translation
The special demands of digital imaging are ________________ and _____________. postprocessing; numerical analysis
Distortion can be reduced by ____________________________. placing the object plane perpendicular to the image plane
Distortion depends on tube position. False
A high-quality medical image should always demonstrate ____________. structures and tissues
What is the formula for Radiographic contrast? Image receptor contrast × subject contrast
Which of the following will reduce quantum mottle? High mAs
Approximately _______% of the x-ray beam incident on the patient is transmitted through the patient without interaction to become part of the image-forming beam. 1
Created by: bighunt
 

 



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