RADT 1725 FINAL EXAM QUESTION
WITH CORRECT ANSWERS
Overcoat - Answer-1
Emulsion - Answer-2
Adhesive Layer - Answer-3
Base - Answer-4
Intensification Factor (IF) - Answer-Because screens are used to reduce patient dose,
one characteristic is the magnitude of dose reduction. This property is called the
____________ and is a measure of the speed of the screen.
Screen Speed - Answer-__________ is a relative number that describes how efficiently
x-rays are converted into light.
Increases. - Answer-As x-ray tube potential is increased, the IF _______.
Speckled Background - Answer-Image noise appears on a radiograph as a
___________. It occurs most often when fast screens and high-kVp techniques are
used. Noise reduces image contrast.
Noise - Answer-Higher conversion efficiency results in increased _______.
Spatial Resolution - Answer-_________ refers to how small an object can be imaged.
Contrast Resolution - Answer-_______ refers to the ability to image similar tissues as
the liver and pancreas or gray matter and white matter.
Spatial Resolution - Answer-Generally, conditions that increase the IF reduce
____________.
Low-Z Front - Answer-1
Contact Felt - Answer-2
Base - Answer-3
Phosphor - Answer-4
Emulsion - Answer-5
,Base - Answer-6
Emulsion - Answer-7
Phosphor - Answer-8
Base - Answer-9
Contact Felt - Answer-10
High-Z back - Answer-11
Cassette - Answer-The _______ is the rigid holder that contains the film and the
radiographic intensifying screens.
Microswitch - Answer-1
Feed Tray - Answer-2
Crossover Racks - Answer-3
Tanks - Answer-4
Developing - Answer-5
Fixing - Answer-6
Washing - Answer-7
Drying Chamber - Answer-8
Receiving Bin - Answer-9
Motor and Drive Chain - Answer-10
Blower - Answer-11
Film - Answer-1
Guide Shoe - Answer-2
Master Roller - Answer-4
Trailing Edge - Answer-5
Leading Edge - Answer-6
,Planetary Roller - Answer-7
The thickness and rigidity of the base. - Answer-What is the difference between x-ray
film and photographic film?
Sensitivity Center - Answer-What characteristic of emulsion makes it x-ray sensitive?
1.0um - Answer-What is the size of the silver halide size?
Silver Halide and Gelatin - Answer-What does emulsion consists of?
Polyester - Answer-What is the base of radiographic film made of?
True - Answer-True or False: Direct exposure films contain thicker emulsion.
Base and emulsion - Answer-What are the two main parts of radiographic film?
Sensitivity Center - Answer-Where does the metallic silver accumulate?
Sulfide - Answer-The sensitivity center is usually silver _________.
Image Forming and Remnant X-rays - Answer-What type of radiation exiting the patient
is responsible for the latent image formation?
Silver Halide Crystal Concentration - Answer-The difference between fast film and slow
film is:
Green - Answer-Orthochromtic film is sensitive to _______ light.
Red - Answer-When rare earth screens are used what type of safelight is required?
68 degrees or below; Excessive heat could result in loss of contrast. - Answer-What is
the temperature radiographic film should be stored at?
True - Answer-True or False: As speed increases, so does noise.
Fluorescence and Phoshprescence - Answer-What two types of luminescence
(emission of light after stimulation) involve outershell electrons?
Light emitted while the phosphor is stimulated. - Answer-What is fluorescence?
After glow, it reduces detail/resolution. - Answer-What is phosphorence?
Speed
Size
, Film contrast
Distribution - Answer-What are 4 performance characterisitcs of film?
Total Darkness - Answer-What condition is necessary for film manufacturing?
Contrast
Speed
Crossover
Spectral matching
Reciprocity
Safelights - Answer-Six characteristics when selecting screen film:
Exposure of the emulsion caused by light from opposite side of intensifying screen. -
Answer-What is crossover?
1. size of the phosphors.
2. thickness of the phosphors.
3. composition of the phosphors.
4. concentration of the phosphors. - Answer-Screen characteristics are determined by
the:
Transport - Answer-The rollers in the automatic processor are part of the ____ system.
1965 - Answer-Eastman Kodak introduced 90 second automatic processing in ______.
Microswitch - Answer-Replenishment of fixer and development are controlled by the:
Fixer tank - Answer-What is the second tank in an automatic processor?
Hold halide crystals - Answer-The main purpose of the gelatin emulsion in radiographic
film is to:
1 hour - Answer-How long did manual processing of radiographs take?
Developer Tank - Answer-The temperature of the ______ is the most critical in
processing film.
Static Artifacts - Answer-Storing film in very low humidity conditions can cause:
Detective Quantum Efficiency (DQE) - Answer-The ability of an intensifying screen to
absorb x rays is called:
After stimulation - Answer-A phosphorescent material emits light:
Density - Answer-If a film is used without spectral matching, the result is a reduction in:
WITH CORRECT ANSWERS
Overcoat - Answer-1
Emulsion - Answer-2
Adhesive Layer - Answer-3
Base - Answer-4
Intensification Factor (IF) - Answer-Because screens are used to reduce patient dose,
one characteristic is the magnitude of dose reduction. This property is called the
____________ and is a measure of the speed of the screen.
Screen Speed - Answer-__________ is a relative number that describes how efficiently
x-rays are converted into light.
Increases. - Answer-As x-ray tube potential is increased, the IF _______.
Speckled Background - Answer-Image noise appears on a radiograph as a
___________. It occurs most often when fast screens and high-kVp techniques are
used. Noise reduces image contrast.
Noise - Answer-Higher conversion efficiency results in increased _______.
Spatial Resolution - Answer-_________ refers to how small an object can be imaged.
Contrast Resolution - Answer-_______ refers to the ability to image similar tissues as
the liver and pancreas or gray matter and white matter.
Spatial Resolution - Answer-Generally, conditions that increase the IF reduce
____________.
Low-Z Front - Answer-1
Contact Felt - Answer-2
Base - Answer-3
Phosphor - Answer-4
Emulsion - Answer-5
,Base - Answer-6
Emulsion - Answer-7
Phosphor - Answer-8
Base - Answer-9
Contact Felt - Answer-10
High-Z back - Answer-11
Cassette - Answer-The _______ is the rigid holder that contains the film and the
radiographic intensifying screens.
Microswitch - Answer-1
Feed Tray - Answer-2
Crossover Racks - Answer-3
Tanks - Answer-4
Developing - Answer-5
Fixing - Answer-6
Washing - Answer-7
Drying Chamber - Answer-8
Receiving Bin - Answer-9
Motor and Drive Chain - Answer-10
Blower - Answer-11
Film - Answer-1
Guide Shoe - Answer-2
Master Roller - Answer-4
Trailing Edge - Answer-5
Leading Edge - Answer-6
,Planetary Roller - Answer-7
The thickness and rigidity of the base. - Answer-What is the difference between x-ray
film and photographic film?
Sensitivity Center - Answer-What characteristic of emulsion makes it x-ray sensitive?
1.0um - Answer-What is the size of the silver halide size?
Silver Halide and Gelatin - Answer-What does emulsion consists of?
Polyester - Answer-What is the base of radiographic film made of?
True - Answer-True or False: Direct exposure films contain thicker emulsion.
Base and emulsion - Answer-What are the two main parts of radiographic film?
Sensitivity Center - Answer-Where does the metallic silver accumulate?
Sulfide - Answer-The sensitivity center is usually silver _________.
Image Forming and Remnant X-rays - Answer-What type of radiation exiting the patient
is responsible for the latent image formation?
Silver Halide Crystal Concentration - Answer-The difference between fast film and slow
film is:
Green - Answer-Orthochromtic film is sensitive to _______ light.
Red - Answer-When rare earth screens are used what type of safelight is required?
68 degrees or below; Excessive heat could result in loss of contrast. - Answer-What is
the temperature radiographic film should be stored at?
True - Answer-True or False: As speed increases, so does noise.
Fluorescence and Phoshprescence - Answer-What two types of luminescence
(emission of light after stimulation) involve outershell electrons?
Light emitted while the phosphor is stimulated. - Answer-What is fluorescence?
After glow, it reduces detail/resolution. - Answer-What is phosphorence?
Speed
Size
, Film contrast
Distribution - Answer-What are 4 performance characterisitcs of film?
Total Darkness - Answer-What condition is necessary for film manufacturing?
Contrast
Speed
Crossover
Spectral matching
Reciprocity
Safelights - Answer-Six characteristics when selecting screen film:
Exposure of the emulsion caused by light from opposite side of intensifying screen. -
Answer-What is crossover?
1. size of the phosphors.
2. thickness of the phosphors.
3. composition of the phosphors.
4. concentration of the phosphors. - Answer-Screen characteristics are determined by
the:
Transport - Answer-The rollers in the automatic processor are part of the ____ system.
1965 - Answer-Eastman Kodak introduced 90 second automatic processing in ______.
Microswitch - Answer-Replenishment of fixer and development are controlled by the:
Fixer tank - Answer-What is the second tank in an automatic processor?
Hold halide crystals - Answer-The main purpose of the gelatin emulsion in radiographic
film is to:
1 hour - Answer-How long did manual processing of radiographs take?
Developer Tank - Answer-The temperature of the ______ is the most critical in
processing film.
Static Artifacts - Answer-Storing film in very low humidity conditions can cause:
Detective Quantum Efficiency (DQE) - Answer-The ability of an intensifying screen to
absorb x rays is called:
After stimulation - Answer-A phosphorescent material emits light:
Density - Answer-If a film is used without spectral matching, the result is a reduction in:
