Materials that emit light when stimulated by x-ray photons are called.

Reduction in x-ray photon intensity as the photon passes through material is termed 

In comparison with 60kVp, 80 kVp will:

1. I. Permit greater exposure latitude

2. II. Produce longer-scale contrast

3. III. Produce more scattered radiation

Which of the following contributes to the radiographic contrast present on the finished radiograph?

I. atomic number of tissues radiographed

II. Any pathologic processes

III. Degree of muscle development

An increase in kilovoltage will have which of the following effects?

I. More scattered radiation will be produced

II. The exposure rate will increase

III. Radiographic contrast will increase

Which of the following groups of exposure factors will produce the shortest scale of contrast?

Which of the following factors influence/s the production of scattered radiation?

            I. Kilovoltage level

            II. Tissue density

            III. Field size

A 15% decrease in kilovoltage peak accompanied by a 50% increase in milliampere-seconds will result in a/an?

Cassette front material can be made of which of the following?

I. Carbon fiber

II. Magnesium

III. Lead

The continued emission of light by a phosphor after the activating source has ceased is termed.

Which of the following materials may be used as grid interspace material?

            I. Lead

            II. Plastic

            III. Aluminum

An increase in the kilovoltage applied to the x-ray tube increases the: 

I. x-ray wavelength

II. Exposure rate

III. Patient absorption

What are the effects of scattered radiation on a radiographic image?

I. It produces fog

II. It increases contrast.

III. It increases grid cutoff

Methods that help to reduce the production of scattered radiation include using:

I. compression

II. beam restriction

III. a grid

Which of the following affect/s both the quantity and quality of the primary beam?

The exposure factors of 400mA, 17ms, and 82 kVp produce a milliampere-seconds value of

The radiographic accessory used to measure the thickness of body parts in order to determine optimal selection of exposure factors is the

An increase in kilovoltage will serve to

Which of the following is/are associated with subject contrast?

I. Patient thickness

II. Tissue density

III. Kilovoltage

The relationship between the height of a grid’s lead strips and the distance between them is referred to as grid: 

A decrease in peak kilovoltage will result in

Which of the following may be used to reduce the effect of scattered radiation on a finished radiograph? 

I. Grids

II. Collimators

III. Compression bands

If a particular grid has lead strips 0.40mm thick, 4.0mm high, and 0.25mm apart, what is its grid ratio? 

It is a measure of the degree of film darkening, depending on the number of x-rays reaching the film.

A device that converts x-ray energy into visible light.

Ability to image two separate objects and visually distinguish one from the other.

Ability to image small objects that have high subject contrast.

Ability to distinguish anatomical structures of similar subject contrast.

If a particular grid has lead strips 1mm thick, 5.0mm high, and 0.5mm apart, what is its grid ratio?

The RT used 75 kVp and 3.2 mAs; what would be the new kVp and mAs if the RT wanted to decrease the patient dose but with the same density output.

The RT used 75 kVp and 3.2 mAs; what would be the new kVp and mAs if the RT wanted the same density output.

The RT used 70 kVp and 4.5 mAs; what would be the new kVp and mAs if the RT wanted to increase the density output.

If 30 mA was applied using 1/5 exposure time, what will be the mAs?

It is inherent in screen-film combination and influenced by film processing.

It is determined by size, shape and mass density of the anatomy that is being examined and the energy of the x-ray beam.

The product of image receptor contrast & subject contrast.

What is radiographic density?

All factors shown below affect the radiographic contrast: EXCEPT.

 All factors shown below affect the radiographic contrast: EXCEPT.

Device used to reduce the intensity of scatter radiation in the x-ray beam.

A device that converts the energy of the x-ray beam into visible light. 

All are layers of the Intensifying Screen; EXCEPT

It is a physical characteristic of development.

It is the final step in processing film.

Transport system of the automatic processor starts at the?

 It controls processing by controlling the time the film is immersed in each wet chemical

The most important factor that influences subject contrast.

Using a Low kVp will result in what kind of contrast?

There are few density steps and the difference in blackness is significant.

Have more discernible shades of gray, and therefore the differences between adjacent shades of gray are smaller.

It affects the exposure to the IR because it alters the amount and penetrating ability of the x-ray beam.

A larger potential difference occurs in the x-ray tube, giving more electrons the kinetic energy to produce x-rays and increasing the kinetic energy overall.

It controls the number of X-Rays.

All are long scale contrast, EXCEPT

All are short scale contrast, EXCEPT

It is the unequal magnification of different portions of the same object.

It is the unequal magnification of different portions of the same object.

The most important factor in determining spatial resolution.

Which of the following are methods of limiting the production of scattered radiation?

1) Using moderate ratio grids

2) Using prone position for abdominal examinations

3) Restricting the field size to the smallest practical size

Which of the following groups of exposure factors will produce the least radiographic density?

To be suitable for use in intensifying screens, a. phosphor should have which of the following characteristics?

1. High conversion efficiency

2. High x-ray absorption

3. High atomic number

In radiography of a large abdomen, which of the following is (are) effective way (s) to minimize the amount of scattered radiation reaching the image receptor?

                   1. Use of close collimation

                   2. Use of compression device

                   3. Use of a low-ratio grid

When blue-emitting rare earth screens are matched properly with the correct film emulsion, what type of safelight should be used in the darkroom?

                   1. Red

                   2. GBX-2

                   3. Ultraviolet

Misalignment of the tube-part-IR relationship results in?

SID affects recorded detail in which of the following ways?

Of the following groups of exposure factors, which will produce the least radiographic density?

Which of the following pathologic conditions would require a decrease in exposure factors?

Tuberculosis

Which of the following groups of exposure factors would be most appropriate to control involuntary motion?

A wire-mesh test is performed to evaluate screen

Why is a very short exposure time essential in chest radiography

Film base is currently made of which of the following materials?

To produce a just perceptible increase in radiographic density, the radiographer must increase the?

Which of the following chemicals is used in the production of radiographic film emulsion?

Which of the following terms refer to light being reflected from one intensifying screen, through the film, to the opposite emulsion and screen?

If 0.05s was selected for a particular exposure, what milliamperage would be necessary to produce 30 mAs?

Which of the following pathologic conditions would require an increase in exposure factors?

Part of IS that serves as mechanical support for phosphor and is farthest from the film.

Factors affecting film speed

       1. Number of Silver halide crystals

       2. Number of sensitivity center per crystals

       3. Size and distribution of crystals

       4. Concentration of crystals in the phosphor

What information, located on each box of film, is important to note and has a direct relationship to image quality?

Increasing field size from 8x10 inches to 14x17 inches, with no other changes, will

The following are used to reduce motion blur, except:

                   1. Use of shortest possible exposure time

                   2. Use of small SID

                   3. Use of restraining device

                   4. Use of large OID.

Which of the following is an abnormal intensifying screen action?

A device that converts x-ray energy into visible light.

Ability to image two separate objects and visually distinguish one from the other.

Ability to image small objects that have high subject contrast.

Ability to distinguish anatomical structures of similar subject contrast.

If a particular grid has lead strips 1mm thick, 5.0mm high, and 0.5mm apart, what is its grid ratio?

Device used to reduce the intensity of scatter radiation in the x-ray beam.

Device used to reduce the intensity of scatter radiation in the remnant x-ray beam.

A device that converts the energy of the x-ray beam into visible light. 

All are layers of the Intensifying Screen; EXCEPT

 It is a physical characteristic of development.

The darkroom must :

Designed to prevent/protect film from exposure to white light and ionizing radiation during handling and processing.

The darkroom must have a protective wall;

It allows the film to transfer without entering the darkroom.

Source of overhead lighting for general purposes.

Source of overhead lighting for general purposes.

Purpose of white light illumination.

Protects the emulsion from scratches, pressure and contamination during handling, processing and storage.

Prevents glare when a finished radiograph is viewed.

It allows emulsion & base to maintain proper contact & integrity.

It  maintains its size and shape of film during use and processing.

Factors affecting detail and distortion.

It is the distance between the radiation side of the test object and the film surface, measured along the central axis of the radiation beam.

It is the distance between the radiation source and the radiographic film.

It  Is the distance between the radiation side of the object and the film/cassette surface.

Focal spot blur is less on what side?

High speed intensifying screens produce what kind of image. EXCEPT.

Reflective layer increases?

If the source to the object distance is increased, the magnification would?

If the film to the object distance is increased, the magnification would?

If the source to the image distance is increased, the magnification would?

Poor screen contact will result in what kind of image?

 It  is used when spatial resolution is important.

What is the focal spot size commonly used in general radiography?

What is the thickness of the emulsion?

What is the percentage of the silver bromide in the emulsion layer?

What is the percentage of the silver bromide in the emulsion layer?

As the number of SHC increases the _____  also increases.

What is the relationship between contrast and latitude?

A long scale contrast have/has?

This is used to transport film for use without exposing the film to room light.

The light emitted must be of proper wavelength (color) to match the film sensitivity.

If the radiologic technologist used a green sensitive intensifying screen with blue sensitive film, what would be the result of the radiograph?