Chapter 36 Fluoroscopy Practice Exam Questions and Answers- Updated 2024

Chapter 36 Fluoroscopy Practice Exam Questions and Answers- Updated 2024 T/F: A fluoroscopic exposure cannot be made until the carriage is returned to the full beam intercept position. - Answer-True T/F: Fluoroscopic x-ray tubes are designed to operate for longer periods of time at much lower mA, as compared to a typical diagnostic tube. - Answer-True T/F: The anode of the image intensification system is positioned outside the glass envelope, immediately in front of the output screen. - Answer-False T/F: Flux gain is a measurement of the increase in light photons caused by conversion efficiency of the output screen - Answer-True T/F: Brightness gain deteriorates with use. - Answer-True T/F: Most automatic brightness control systems monitor the current between the cathode and the anode of the image intensifier to maintain fluoroscopic image density and contrast. - Answer-True T/F: Most automatic brightness control systems have a relatively fast response time. - Answer-False EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 2/29 T/F: Quantum mottle is blotchy or grainy appearance caused by excessive radiation to create a uniform image. - Answer-False T/F: A video monitor is an anode ray tube. - Answer-False T/F: Video monitors can emit low energy x-rays. - Answer-True T/F: The tabletop exposure rate should not exceed 10 R/min. - Answer-false T/F: The minimum source-to-skin distance is 15" for stationary fluoroscopic equipment. - Answer-True T/F: The minimum source-to-skin distance is 12" for mobile fluoroscopic equipment. - Answer-True T/F: Magnification image intensifiers caused decreased patient dose. - Answer-False T/F: The highest energy scatter from the patient during fluoroscopy occurs at a 45-degree angle from the incident beam. - Answer-False Fluoroscopy is a ____________radiographic examination. a. dynamic b. static c. diagnostic d. more than one of the above - Answer-d. more than one of the above Fluoroscopy is the domain of the ______________. EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 3/29 a. radiographer b. radiologist c. radiation physicist d. radiography student - Answer-b. radiologist Fluoroscopy is commonly used for observation of ______________. a. the heart b. a surgical procedure c. the GI tract d. all of the above - Answer-d. all of the above The fluoroscopic x-ray tube and image receptor are mounted on a ___________________. a. carriage b. c-arm c. platform d. camera - Answer-b. c-arm The carriage commonly supports the _______. a, image intensifier b. power drive controls EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 4/29 c. spot film selector d. all of the above - Answer-d. all of the above Fluoroscopic mA range is commonly ___________ mA. a. 0.5 to 5.0 mA b. 5.0 to 10.0 mA c. 10.0 to 100 mA d. 100 to 500 mA - Answer-a. 0.5 to 5.0 mA During fluoroscopy, the SOD cannot be less than ________ inches. a. 12 b. 15 c. 20 d. 40 - Answer-b. 15 During fluoroscopic image intensification, the primary x-ray beam exits the patient and strikes the ________ of the image intensifier. a. input screen b. electrostatic lenses c. photocathode EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 5/29 d. output screen - Answer-a. input screen The input screen absorbs _____________ and emits __________. a. x-ray photons, light photons b. x-ray photons, electrons c. light photons, x-ray photons d. electrons, x-ray photons - Answer-a. x-ray photons, light photons The photocathode absorbs ____________ and emits ____________. a. x-ray photons, light photons b. x-ray photons, electrons c. light photons, x-ray photons d. electrons, x-ray photons - Answer-b. x-ray photons, electrons Electrostatic lenses are used to accelerate and focus ___________. a. light photons b. x-ray photons c. electrons d. none of the above - Answer-c. electrons The primary ___________ occurs from the acceleration and focusing of the electron beam. EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 6/29 a. phosphorescence b. magnification c. magnification d. brightness gain - Answer-d. brightness gain the output screen absorbs ____________ and emits ______________. a. electrons, light photons b. electrons, x-ray photons c. light photons, electrons d. light photons, x-ray photons - Answer-a. electrons, light photons The input screen is ___________ in shap