California Fluoroscopy Test Questions and Answers- 100% pass

California Fluoroscopy Test Questions and Answers- 100% pass An image intensifiers photocathode causes ___ to be given off in direct proportion to the intensity of the fluorescent light: a. remnant radiation b. electrons c. x-rays d. light photons - Answer-electrons What fluoroscopic television system device decodes the video signal into a visible image? a. Vidicon camera b. Camera control unit c. Television monitor d. Electron gun - Answer-Television Monitor Which of the following materials are used in the construction of a fluoroscopic tabletop? 1. Lead 2. Aluminum EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 2/107 3. Bakelite 4. Carbon fiber - Answer-2, 3, and 4 Geometric factors in the shape of the image intensification tube b. Focal-film-distance (FFD) c. Object-to-image distance (OID) d. Minification gain - Answer-... If the entrance skin dose is measured from the surface of the tabletop, the x-ray source is located: a. either over or under the table b. under the table c. over the table d. not enough information provided - Answer-b. Under the table The mottle level of an image can be adjusted by: 1. changing mA 2. changing kVp 3. changing the exposure factors 4. increasing the number of available x-ray photons - Answer-All of the above EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 3/107 During a fluoroscopic exam, the main source of scattered radiation is produced from: a. the patient b. x-ray source c. table top d. leakage radiation - Answer-the patient Excessive lighting in the fluoroscopy room: a. Helps to perceive a dim image as brighter b. Helps to properly adjust the overall luminance of the TV image c. Enhances visualization of a black and white TV image d. May result in increasing the technical operating factors - Answer-May result in increasing the technical operating factors Suitable gonad shields must be used: a. Whenever gonads are within the useful x-raybeam b. When shielding of gonads does not interfere with the diagnosis c. On all potentially procreative patients d. At all times - Answer-When shielding of gonads does not interfere with the diagnosis Which of the following are true concerning cine film? EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 4/107 1. Available film sizes are: 70 mm, 100 mm, and 110 mm 2. The larger the film size the better the image quality 3. Nearly all cine-fluorography exams involve studies of the GI system 4. Delivers approximately the same dose as routine photospot image recording - Answer-2 only The exposure rate at the tabletop may not exceed five rads per minute except: 1. when using the ABC on large patients 2. during magnification mode 3. where higher exposure rates are allowed - Answer-b. 1, 2 and 3 only Images produced with photo spot film cameras ___ spot films taken with conventional cassettes. 1. use a higher mA than 2. require about 1/2 to 1/3 the dose of 3. exhibit superior image quality compared to - Answer-require about 1/2 to 1/3 the dose The ability of an imaging system to differentiate small objects that are closely spaced as separate objects is referred to as: a. Differentiation b. Resolution EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 5/107 c. Statistical fluctuation d. Detector contrast - Answer-b. Resolution The photoconductive target in a television camera pick-up tube: a. Conducts electrons across to the target b. Allows a proportional electron charge to be generated at a particular position c. Creates a video signal d. Creates an electronic current which is converted into a video image . - Answer-Allows a proportional electron charge to be generated at a particular position Size distortion is primarily caused by: a. Focal-film-distance (FFD) b. Geometric factors in the shape of the image intensification tube c. Minification gain d. Object-to-image distance (OID) - Answer-Object-to-image distance (OID) The overall luminescence of the TV image may be properly adjusted by: 1. increasing room lighting 2. adjusting the contrast control button on the TV monitor EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024 Page 6/107 3. adjusting the brightness control button on the TV monitor - Answer-2 and 3 only Which of the following statements is true concerning fluoroscopic grids? a. Reduces scattered radiation produced in the image intensifier b. The typical grid ratio is 12:1 c. High ratio grids are preferred d. Located between the patient and input layer of the image intensifier - Answer-Located between the patient and input layer of the image intensifier One of the most important actions a fluoroscopist can take to avoid unnecessary radiation exposure to the patient is to use appropriate: a. Illumination b. Primary beam filtration c. Collimation d. Protective lead curtains - Answer-Collimation The increase in effective brightness due to the size reduction