Radiography Testbank Questions and Answers
2023 Guaranteed A+++++
Which of the following modes of a trifield image intensifier will result in the highest patient dose?
A. Its 25-in. mode
B. Its 17-in. mode
C. Its 12-in. mode
D. Diameter does not affect patient dose
Its 12-in. mode
A particular AP thoracic measurement is 25 cm. What tomographic sections are indicated if we desire
one midline and one each anterior and posterior to midline?
A. 8, 9, and 10 cm
B. 10, 11, and 12 cm
C. 12, 13, and 14 cm
D. 14, 15, and 16 cm
12, 13, and 14 cm
T/F: The cooling oil in an x-ray tube is part of the inherent filtration
TRUE
When using the smaller field in a dual-field image intensifier,
1. a smaller patient area is viewed.
2. the image is magnified.
3. the image is less bright.
AOTA
Design characteristics of x-ray tube targets that determine heat capacity include the
1 rotation of the anode
2 diameter of the anode
3 size of the focal spot
AOTA
A technique chart should be prepared for each AEC x-ray unit and should contain which of the following
information for each type of examination?
1 Photocell(s) used
2 Optimum kilovoltage
3 Backup time
AOTA
,Which of the following statements regarding dual x-ray absorptiometry is (are) true?
1 It is a low-dose procedure.
2 Two x-ray photon energies are used.
3 Photon attenuation by bone is calculated.
AOTA
Disadvantages of moving grids over stationary grids include which of the following?
1 They can prohibit the use of very short exposure times.
2 They increase patient radiation dose.
3 They can cause phantom images when anatomic parts parallel their motion.
1 and 2 ONLY
How is the thickness of the tomographic section related to the tomographic angle?
A. The greater the tomographic angle, the thicker the section.
B. The greater the tomographic angle, the thinner the section.
C. The less the tomographic angle, the thinner the section.
D. The tomographic angle is unrelated to section thickness.
The greater the tomographic angle, the thinner the section.
All the following x-ray circuit devices are located between the incoming power supply and the primary
coil of the high-voltage transformer except
A. the timer
B. the kilovoltage meter
C. the milliamperage meter
D. the autotransformer
the milliamperage meter
Which of the following techniques is used to evaluate the dynamics of a part?
A. Fluoroscopy
B. Stereoscopy
C. Tomography
D. Phototiming
Fluoroscopy
In which of the following examinations would a cassette front with very low absorption properties be
especially important?
A. Abdominal radiography
B. Extremity radiography
C. Angiography
D. Mammography
Mammography
The ability of an x-ray unit to produce constant radiation output, at a given mA, using various
combinations of mAs and time is called
,A. linearity.
B. reproducibility.
C. densitometry.
D. sensitometry.
linearity
Advantages of battery-powered mobile x-ray units include their
1 ability to store a large quantity of energy
2 ability to store energy for extended periods of time
3 lightness and ease of maneuverability
1 and 2 ONLY
Star and wye configurations are related to
A. autotransformers
B. three-phase transformers
C. rectification systems
D. AECs
three-phase transformers
When the radiographer selects kilovoltage on the control panel, which device is adjusted?
A. Step-up transformer
B. Autotransformer
C. Filament circuit
D. Rectifier circuit
Autotransformer
The total brightness gain of an image intensifier is the product of
1 flux gain
2 minification gain
3 focusing gain
1 and 2 ONLY
Which of the following is used in digital fluoroscopy, replacing the image intensifier's television camera
tube?
A. Solid-state diode
B. Charge-coupled device
C. Photostimulable phosphor
D. Vidicon
Charge-coupled device
Which of the following devices is used to control voltage by varying resistance?
A. Autotransformer
B. High-voltage transformer
, C. Rheostat
D. Fuse
Rheostat
Which of the following equipment is mandatory for performance of a myelogram?
A. Cine camera
B. 105-mm spot film
C. Tilting x-ray table
D. Tomography
Tilting x-ray table
Which of the following devices is (are) component(s) of a typical fluoroscopic video display system?
1 Videotape recorder
2 TV camera
3 TV monitor
2 and 3
The x-ray tube in a CT imaging system is most likely to be associated with
A. low-energy photons
B. an unrestricted x-ray beam
C. a pulsed x-ray beam
D. a large focal spot
a pulsed x-ray beam
Accurate operation of the AEC device depends on
1 the thickness and density of the object
2 positioning of the object with respect to the photocell
3 beam restriction
2 and 3 ONLY
Which of the following would be appropriate cassette front material(s)?
1 Tungsten
2 Magnesium
3 Bakelite
2 and 3 ONLY
The image intensifier's input phosphor generally is composed of
A. cesium iodide
B. zinc cadmium sulfide
C. gadolinium oxysulfide
D. calcium tungstate
cesium iodide
2023 Guaranteed A+++++
Which of the following modes of a trifield image intensifier will result in the highest patient dose?
A. Its 25-in. mode
B. Its 17-in. mode
C. Its 12-in. mode
D. Diameter does not affect patient dose
Its 12-in. mode
A particular AP thoracic measurement is 25 cm. What tomographic sections are indicated if we desire
one midline and one each anterior and posterior to midline?
A. 8, 9, and 10 cm
B. 10, 11, and 12 cm
C. 12, 13, and 14 cm
D. 14, 15, and 16 cm
12, 13, and 14 cm
T/F: The cooling oil in an x-ray tube is part of the inherent filtration
TRUE
When using the smaller field in a dual-field image intensifier,
1. a smaller patient area is viewed.
2. the image is magnified.
3. the image is less bright.
AOTA
Design characteristics of x-ray tube targets that determine heat capacity include the
1 rotation of the anode
2 diameter of the anode
3 size of the focal spot
AOTA
A technique chart should be prepared for each AEC x-ray unit and should contain which of the following
information for each type of examination?
1 Photocell(s) used
2 Optimum kilovoltage
3 Backup time
AOTA
,Which of the following statements regarding dual x-ray absorptiometry is (are) true?
1 It is a low-dose procedure.
2 Two x-ray photon energies are used.
3 Photon attenuation by bone is calculated.
AOTA
Disadvantages of moving grids over stationary grids include which of the following?
1 They can prohibit the use of very short exposure times.
2 They increase patient radiation dose.
3 They can cause phantom images when anatomic parts parallel their motion.
1 and 2 ONLY
How is the thickness of the tomographic section related to the tomographic angle?
A. The greater the tomographic angle, the thicker the section.
B. The greater the tomographic angle, the thinner the section.
C. The less the tomographic angle, the thinner the section.
D. The tomographic angle is unrelated to section thickness.
The greater the tomographic angle, the thinner the section.
All the following x-ray circuit devices are located between the incoming power supply and the primary
coil of the high-voltage transformer except
A. the timer
B. the kilovoltage meter
C. the milliamperage meter
D. the autotransformer
the milliamperage meter
Which of the following techniques is used to evaluate the dynamics of a part?
A. Fluoroscopy
B. Stereoscopy
C. Tomography
D. Phototiming
Fluoroscopy
In which of the following examinations would a cassette front with very low absorption properties be
especially important?
A. Abdominal radiography
B. Extremity radiography
C. Angiography
D. Mammography
Mammography
The ability of an x-ray unit to produce constant radiation output, at a given mA, using various
combinations of mAs and time is called
,A. linearity.
B. reproducibility.
C. densitometry.
D. sensitometry.
linearity
Advantages of battery-powered mobile x-ray units include their
1 ability to store a large quantity of energy
2 ability to store energy for extended periods of time
3 lightness and ease of maneuverability
1 and 2 ONLY
Star and wye configurations are related to
A. autotransformers
B. three-phase transformers
C. rectification systems
D. AECs
three-phase transformers
When the radiographer selects kilovoltage on the control panel, which device is adjusted?
A. Step-up transformer
B. Autotransformer
C. Filament circuit
D. Rectifier circuit
Autotransformer
The total brightness gain of an image intensifier is the product of
1 flux gain
2 minification gain
3 focusing gain
1 and 2 ONLY
Which of the following is used in digital fluoroscopy, replacing the image intensifier's television camera
tube?
A. Solid-state diode
B. Charge-coupled device
C. Photostimulable phosphor
D. Vidicon
Charge-coupled device
Which of the following devices is used to control voltage by varying resistance?
A. Autotransformer
B. High-voltage transformer
, C. Rheostat
D. Fuse
Rheostat
Which of the following equipment is mandatory for performance of a myelogram?
A. Cine camera
B. 105-mm spot film
C. Tilting x-ray table
D. Tomography
Tilting x-ray table
Which of the following devices is (are) component(s) of a typical fluoroscopic video display system?
1 Videotape recorder
2 TV camera
3 TV monitor
2 and 3
The x-ray tube in a CT imaging system is most likely to be associated with
A. low-energy photons
B. an unrestricted x-ray beam
C. a pulsed x-ray beam
D. a large focal spot
a pulsed x-ray beam
Accurate operation of the AEC device depends on
1 the thickness and density of the object
2 positioning of the object with respect to the photocell
3 beam restriction
2 and 3 ONLY
Which of the following would be appropriate cassette front material(s)?
1 Tungsten
2 Magnesium
3 Bakelite
2 and 3 ONLY
The image intensifier's input phosphor generally is composed of
A. cesium iodide
B. zinc cadmium sulfide
C. gadolinium oxysulfide
D. calcium tungstate
cesium iodide
