Test Bank for Bontragers Textbook of Radiographic Positioning and Related Anatomy 10th Edition by Lampignano.

f the following factors has the greatest effect on the brightness of the digital image? a. kV b. mAs c. Processing software d. Matrix size ANS: C REF: 50 83. The ability of a digital imaging system to distinguish between similar tissues is the definition for: a. edge enhancement. b. contrast resolution. c. sensitivity. d. system response. ANS: B REF: 50 84. Contrast in the digital image is primarily affected by: a. kV. b. mAs. c. matrix size. d. predetermined algorithmsN.U RS IN GT B.CO M ANS: D REF: 50 85. The greater the bit depth of a digital system, the greater the: a. brightness. b. resolution. c. exposure index. d. contrast resolution. ANS: D REF: 50 86. Which of the following factors has the greatest effect on spatial resolution of the digital image? a. Acquisition pixel size b. Display pixel size c. Use of a grid d. SID ANS: A REF: 51 87. Misrepresentation of object size or shape as projected onto radiographic recording media is the general definition for: a. penumbra. b. distortion. c. magnification. Bontrager's Textbook of Radiographic Positioning and Related Anatomy 10th Edition Lampignano Test Bank STUVIA.COM d. margin loss. ANS: B REF: 51 88. The number of x-ray photons that strike the digital receptor can be considered as: a. noise. b. kV. c. signal. d. density. ANS: C REF: 52 89. A numerical value that is representative of the exposure projected on the digital image receptor is termed: a. algorithm. b. variance. c. signal-to-noise ratio (SNR). d. exposure indicator. ANS: D REF: 51 90. A random disturbance that obscures or reduces clarity is termed: a. signal. b. noise. c. electrical fluctuation. d. variance. ANS: B REF: 52 STUVIA.COM 91. The intensity of light that represents the individual pixels in the image on the monitor defines: a. density. b. brightness. c. contrast. d. spatial resolution. ANS: B REF: 50 92. Which of the following factors has the greatest negative impact on SNR? a. Excessive kV b. Collimation c. Insufficient mAs d. Long SID ANS: C REF: 52 93. Which device or technique is most effective in controlling scatter radiation in digital imaging? a. Focal spot size b. Added filtration c. Postprocessing algorithm d. Grid ANS: D REF: 52 Bontrager's Textbook of Radiographic Positioning and Related Anatomy 10th Edition Lampignano Test Bank STUVIA.COM 94. The application of specific image processing that alters pixel values to the edges of structures is: a. smoothing. b. edge enhancement. c. magnification. d. image reversal. ANS: B REF: 53 95. The adjustment of contrast and brightness of the displayed image is: a. brightness. b. equalization. c. edge enhancement. d. bit depth. ANS: D REF: 53 96. The term portrait describes the long dimension of the image receptor that is aligned to the long axis of the anatomy. a. perpendicular b. diagonal c. parallel d. transverse ANS: C REF: 57 97. What type of material makes up the receptor in the FPD-TFT system? a. Amorphous selenium b. Amorphous silicon c. Calcium tungstate d. Both A and B STUVIA.COM ANS: D REF: 56 98. Which of the following energy sources will erase any residual latent image from an exposed PSP imaging plate? a. Low-dose radiation b. Bright light c. Heat d. Ultraviolet light ANS: B REF: 54 99. A digital storage and image management system defines a: a. radiology information system. b. digital archive. c. hospital information system. d. workstation. ANS: B REF: 510 100. A network system with an array of hardware and software that connects all imaging modalities is termed a(n): Bontrager's Textbook of Radiographic Positioning and Related Anatomy 10th Edition Lampignano Test Bank STUVIA.COM a. archive. b. HIS. c. network. d. PACS. ANS: D REF: 58 101. A standard that ensures that all digital imaging equipment can communicate with each other is referred to as: a. RIS. b. PACS. c. DICOM and HL7. d. HIS. ANS: C REF: 58 102. Which of the following is NOT an advantage of a PACS? a. Simultaneous viewing of images at multiple locations b. Elimination of misplaced, damaged, or missing films c. Rapid chemical processing of images d. Rapid (electronic) transfer of images within the hospital ANS: C REF: 58 103. A “soft-copy radiograph” is defined as a: a. radiographic image viewed on a computer monitor. b. radiographic image printed on film. c. radiographic image placeNd onRa CID.G B.C M d. latent radiographic image oUn aSCRNimaTging plOate. ANS: A REF: 58 104. The application of specific image processing to reduce noise in an image is termed: a. filtration. b. photon degradation. c. attenuation. d. smoothing. ANS: D REF: 510 105. A series of “boxes” that gives form to the image is the definition for: a. acquisition matrix. b. pixels. c. bit depth. d. display matrix. ANS: D REF: 510 106. The range of exposure intensities that will produce an acceptable image is the definition for exposure: a. latitude. b. level. c. index. Bontrager's Textbook of Radiographic Positioning and Related Anatomy 10th Edition Lampignano Test Bank STUVIA.COM d. range. ANS: A REF: 510 107. Changing or enhancing the electronic image to view it from a different perspective or improve its diagnostic quality is the general definition for: a. smoothing. b. edge enhancement. c. postprocessing. d. algorithmic conversion. ANS: C REF: 53 108. What is the complete term for RIS