DIGITAL RADIOGRAPHY AND PACS 3RD EDITION BY CARTER CHAPTER1 9 TESTBANK . QUESTIONS WITH 100 CORRECT AND VERIFIED ANSWERS AND EXPLAINATION.

Communication Systems Carter: Digital Radiography and PACS, 3rd Edition MULTIPLE CHOICE 1. Film and intensifying screens are primarily used in a. computed radiography (CR). b. digital radiography (DR). c. conventional radiography. ANS: C 3. Intensifying screens a. absorb light. b. emit light. c. absorb scatter. d. emit positive electronsANS: B radiography. 4. Which modality was the first to use the principle of digital imaging? a. Computed tomography (CT) b. Magnetic resonance imaging (MRI) c. Ultrasonography d. Cardiac catheterization ANS: A OBJ: Define the term dig 5. Who was the first to incorporate digital imaging with the CT scanner? a. Paul Lauterbur b. Godfrey Hounsfield c. Sol Nudelman d. M. Paul Capp ANS: B OBJ: Define the term digital imaging. 6. Teleradiology, moving images via telephone lines to and m/teostte locations, was first conceptualized by a. Paul Lauterbur. b. M. Paul Capp. c. Albert Jutras. d. Sol Nudelman. ANS: C OBJ: Define digital imaging and communications in medicine. 7. The invention of CT is heralded as a. the advanced use of three-dimensional computation in medical imaging. b. one of the greatest milestones in medical imaging. c. the stepping stone for the development of MRI. 8. Early reconstruction of raw CT data took a few _ to form a recognizable image. a. minutes 13. Teleradiography incorporated to produce radiographic images. satellite feeds cable lines T1 cables ANS: D OBJ: Explain what a PACS is and how it is used. 14. One of the early goals related to the development of PACSo/test a. reduce costs related to overstaffing. b. allow radiologists to read stat films from a hospital while at home. c. provide a means to move battlefield images to an established hospital. d. eliminate the need for chemical processing. ANS: C OBJ: Explain what a PACS is and how it is used. 15. CR acquires an image through a. conventional film/screen processing using a digital scanner. b. the heating of a thermoluminescent device. c. an electrically charged cassette. d. the use of a storage phosphor plate. ANS: D OBJ: Describe the latent image formation process for PSP image capture. 16. Storage phosphor plates are similar to a. intensifying screens. b. xeromammography cassettes. c. flat panel detectors. d. cardboard cassettes. ANS: A OBJ: Describe the latent image formation process for PSP image capture. 17. In a DR system, which of the following are needed to produce a radiographic image? a. X-ray absorber and a CCD b. Intensifying screen and a TFT c. Storage phosphor plate and a CCD d. Storage phosphor plate and a TFT ANS: A OBJ: Compare and contrast the latent image formation processes. 18. The two elements needed to convert light signals into an electrical signal while using indirect capture DR are TFT and a. photodiodes. b. photoconductors. c. phototransistors. d. photostators. ANS: A OBJ: Compare and contrast the latent image formation processes. 19. The x-ray absorber typically used in direct capture DR is a a. photodiode. b. phototransistor. c. photoconductor. d. photoelectron. ANS: C OBJ: Compare and contrast the latent image formation processes. 20. Technologist efficiency ratings are generally the same p/teasrting conventional radiography with radiography. a. computed b. digital ANS: A OBJ: Compare and contrast the latent image formation processes. 21. Compared with a 90-second processing time found in conventional radiography, image acquisition with DR has now been reduced to a. instantaneous acquisition. b. 1–2 seconds. c. 3–5 seconds. d. 6–8 seconds. ANS: C OBJ: Compare and contrast the latent image formation processes. 22. The active element in a storage phosphor is a. lithium. b. glutaraldehyde. c. europium. d. barium fluorohalide. ANS: D OBJ: Compare and contrast the latent image formation processes. 23. In reference to PSP image capture, to release the latent image, which of the following devices is scanned over the phosphor plate? a. Photomultiplier tube b. Fluorescent light c. Focused laser light d. Lithium crystal ANS: C OBJ: Describe the latent image me/stesstfor PSP image capture. 24. Which of the following best describes the sequence for PSP image capture? a. Phosphor plate, focused laser light scanner, ,md/tiegsittal-analog converter, review station b. Phosphor plate, focused laser light scanner, photodensitometer, digital-analog converter, review station c. Phosphor plate, focused laser light scanner, me/rte,sat nalog-digital converter, review station d. Phosphor plate, focused laser light scanner, photomultiplier, analog-digital converter, review station ANS: D OBJ: Compare and contrast the latent image formation processes. 25. X-ray energy related to direct capture DR will stimulate a a. photodensitometer b. scintillator c. TFT array d. charge-coupled device ANS: B OBJ: Compare and contrast the latent image formation processes. 26. The converts x-ray energy directly to a digital electrical signal. a. photoconductor b. photomultiplier c. scintillator. d. TLD ANS: A OBJ: Compare and contrast the latent image formation processes. 27. Exposure latitude is to conventional radiography as is to DR. a. characteristic response b. linear manner c. subject contrast d. dynamic range ANS: D OBJ: Compare and contrast the latent r/mtesattion processes. . ANS: A OBJ: Explain what a PACS is and how it is used.