Worksheet 24 - MCQ- Fluoroscopy- physics with correct answers 100%

Worksheet 24 - MCQ- Fluoroscopy- physics with correct answers 100% In a modern fluoroscope , the fluoroscopic x-ray tube: A. can be wither under or over the table B. is always over the table C. is always the same as the radiographic tube D. is always under the table E. Must have very high capacity - Correct Answer can be wither under or over the table The fluoroscope was invented by A. Alexander bell B. Hollis potter C. Jan Marconi D. Thomas Edison E. Wilhelm Roentgen - Correct Answer Thomas Edison Compared with a radiogrpahic examination the primary purpose of a fluoroscopic examination is to visualize: A. Cross sectional images B. Dynamic images C. Longitudinal images D. Static images E. Transverse images - Correct Answer Dynamic images Fluoroscopy normally requires a tube current of : A. 0.1- 1.0 mA B. 1-5 mA C. 5-10 mA D. 10-100 mA E. 10-1000mA - Correct Answer 1-5 mA compared with radiography, the x-ray technique required for fluoroscopy calls for which of the following? A. higher kVp B. Higher mA C. Lower kVp D. Lower mA E. shorter exposure - Correct Answer Lower mA Automatic brightness stabilization ABS is designed to compensate for changes in which of the following? A. Examination time B. Patient composition C. Patient dose D. patient positioning E. Technique selection - Correct Answer Patient composition The bucky slot cover of a fluoroscope is a A. Cassette holder B. film changer C. film support device D, film transport device E, protective device - Correct Answer protective device which of the following units of measurement is used to express fluoroscopic image brightness? A. cd/cm^2 B. coulomb C. Coulomb/ kilogram D. Lambert E. Roentgen - Correct Answer cd/cm^2 which of the following structures is most sensitive to colors? A. cones B, fovea centralis C. Rods D, Cornea E, iris - Correct Answer cones what is the function of the iris? A. control the light level B. distinguish colors C. Focus the light on to the retina D. Protect the eye E. sense visible -light photons - Correct Answer control the light level the cones are : A. Essentially color blind B, located at the fovea centralis C. located on the periphery of the retina D. used for photopic vision E. very sensitive to light - Correct Answer used for photopic vision the fovea centralis: A. essential to focusing B. next to the lens C. part of the retina D. the blind spot E. the disc like structure. - Correct Answer part of the retina