cch 9

Name:                                                                                                 Date: 

1401 Chapter 10 questions and last section of Chapter 9

• What is signal to noise ratio and how does it affect image quality?

• What is contrast to noise ratio and how does it affect image quality?

• What is an image artifact and how does it affect image quality?

• What is the phosphor in the CR plate?

• What is the conductive layer?

• What is the photodetector in CR systems?

• What are the two methods of indirect capture material?

• What is a scintillator?

• What are the scintillator materials in an indirect DR system?

• What is the photodetector material in an indirect DR system?

• What material is used a photoconductor in direct capture DR systems?

• What is a histogram?

• explain the relationship among display field of view matrix and pixel size

• define the concepts of mudulation transfer function detectice quantum effiency signal to noise ratio and contrast to nose ratio and satae their relationship to image quality differentiate between size and shape disortion recognize the effect of quantum noise and satter on digital image quality

• discuss the effects of image artifacts on radiographic quality