test_bank_for_radiographic_image_analysis_4th_edition_by_martensen.

TEST BANK FOR RADIOGRAPHIC IMAGE ANALYSIS 4TH EDITION BY MARTENSEN Chapter 02: Visibility of Details MULTIPLE CHOICE 1. The light collected and converted to an electrical signal by the photomultiplier tube (PMT) during CR image sampling is then sent to the to be digitized. a. ADC (analog-to-digital converter) b. DAC (digital-to-analog converter) c. LUT (lookup table) d. workstation REF: P. 38 2. What is the location on a histogram graph of air/gas? a. Center b. Far right c. Left d. Right REF: P. 39 | Figure 2-1 3. What is the location on a histogram graph of background brightness? a. Center b. Far right c. Left d. Right REF: PP. 38-39 4. What is the location on a histogram graph of bone? a. Center b. Far right c. Left d. Right REF: PP. 38-39 5. What is the location on a histogram graph of contrast/metal? a. Center b. Far right c. Left d. Right REF: PP. 38-39 6. What is the location on a histogram graph of fat? a. Center b. Far right c. Left d. Right REF: PP. 38-39 7. What is the location on a histogram graph of soft tissue? a. Center b. Far right c. Left d. Right REF: PP. 38-39 8. All of the following may result in histogram analysis errors except a. unusual pathologic conditions. b. poor positioning. c. motion. d. alignment of the anatomic part with the IR. REF: P. 42 9. All of the following are guidelines for producing optimal image histograms except a. choose the correct body part and projection from the workstation menu. b. leave minimal background in the exposure field through tight collimation. c. use the smallest possible IR and cover at least 50% of it. d. erase the imaging plate if the IR has not been used for a few days. REF: P. 39 | Box 2-1 10. The exposure indicator number represents all of the following except the a. amount of light given oNffUbRy SthIe NimGaTgiBng.pClaOteM. b. amount of exposure to the patient. c. amount of exposure to the imaging plate. d. measure of dose to the patient. REF: PP. 39-40