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wk 12 rad107

QuestionAnswer
Radiographic __________ is random fluctuation of x-ray interaction on the image receptor. noise
Which of the following is the principal contributor to image noise in radiographic and fluoroscopic imaging procedures? quantum mottle
Distortion can be reduced by ____________________________. placing the object plane perpendicular to the image plane
What is the formula for Radiographic contrast? Image receptor contrast × subject contrast
Higher speed image receptors generally produce images with increased noise
X-rays that exit the patient and enter the image intensifier first interact with the _____. input phosphor
The _______ in the retina are stimulated by _______ light; the _______ are stimulated by _______ light. rods; low; cones; bright
The kinetic energy of photoelectrons in the image intensifier is greatly increased by the _____________________. potential difference across the tube
An image intensifier tube is identified by the diameter of its ________________ input phosphor
Image intensified fluoroscopy is performed at illumination levels similar to ________. radiograph viewing
The new development in the fourth-generation CT scanner is the stationary detector assembly
The first generation of computed tomography used ______ detector(s). one
Each pixel of information in the CT image contains numerical information in ___________ units. Hounsfield
CT scanners operate on ________________ voltage generation. high frequency
The reduction in ____________ was the principal advantage of the second-generation CT scanners. scanning time
Created by: lindseylaporte
 

 



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