Image Quality

1. The fluoroscope is used for the examination of moving internal structures and fluids.

True

False

2. If mAs is lowered by 50% (halved), KVP is ________

Lowered 15%

Increased 15%

3. The temperature the developing chemical is kept at during developing. Maximum contrast is obtained at the recommended development temperature.

Fluoroscopy

Tomography

Intensifying screen

Film

Developing temperature

4. Effective focal spot (EFS)

The blurring of anatomic structures lying outside the object plane

Distance from x-ray head to cassette

The focal spot projected onto the patient and image receptor

Distance from the object to the cassette

5. A continuous image of the motion of internal structures while the x-ray tube is energized.

Fluoroscopy

Tomography

Intensifying screen

Film

Developing temperature

6. What is an example of a high contrast procedure that tomography can be applied to?

(as said on sheet)

Calcified kidney stones

Prostatectomy

Orchiectomy

Lobotomy

7. Millampere and time (seconds) combined is used as one factor in radiographic technique. The Milliamperes (mAs) determine the number of x-rays in the primary beam.

True

False

8. Motion

The effective target area is the focal spot projected onto the patient and image receptor

The reciprocal of the exposure in roentgens needed to produce a density of 1

Relative number used to identify the efficiency of conversion of x-ray to usable light

The blurring of anatomic structures lying outside the object plane

9. Resemble flexible sheets of plastic or cardboard and are manufactured in sizes corresponding to the size of the film. The screen acts as an amplifier of the remnant radiation reaching the film.

Fluoroscopy

Tomography

Intensifying screen

Film

Developing temperature

10. Screen speed

The reciprocal of the exposure in roentgens needed to produce a density of 1

Used in reference to intensifying screen:Relative number used to identify the efficiency of conversion of x-ray to usable light.

The blurring of anatomic structures lying outside the object plane

Distance from the object to the cassette

11. Different absorption by organs or bones leads to different kv.

True

False

12. Source-to-image receptor distance (SID)

Distance from the object to the cassette

Focal spot projected onto the patient and image receptor

Distance from source (x-ray head) to cassette

Relative number used to identify the efficiency of conversion of x-ray to usable light.

13. Object-to-image receptor distance (OID)

The effective area is the focal spot projected onto the patient and image receptor

Distance from x-ray head to cassette

The relative number used to identify the efficiency of conversion of x-ray to usable light

Distance from the object to the cassette

14. If mAs is doubled, than kvp must be

Lowered 15%

Increased 15%

15. Made up of silver-halide crystals, emulsion and a base that reacts when penetrating beam hits the film causing photoelectric interaction between the crystals.

Fluoroscopy

Tomography

Intensifying screen

Film

Developing temperature

16. What is the principal advantage of tomography?

Permanent images are made with little interruption of the examination

Less blur

Improved contrast resolution

Cheaper

17. Designed to bring into focus only the anatomy lying in a plane of interest while blurring structures on either side of the plane.

Fluoroscopy

Tomography

Intensifying screen

Film

Developing temperature

Submit

19. What is one of those effects?

Screen speed

Filtration

Disintegration

Film speed

20. With fluoroscopy, permanent images can be made with little interruption of the examination. What is this referred to?

High speed film

Transradiographic film

Spot film

Quick capture film

21. Film speed

Speed of a film is the reciprocal of the exposure in roentgens needed to produce a density of 1

Used in reference to intensifying screen:Relative number used to identify the efficiency of conversion of x-ray to usable light.

The blurring of anatomic structures lying outside the object plane

A measure of distance from the object to the cassette

22. Lower kv with higher screen speed decreases contrast.

True

False

Increases contrast

Explanation

Increases contrast

23. To calculate the mAs and kv needed to lower patient exposure and maintain radiographic density, one must use the ____ (when given specific values)

Rule of 70s

50/15

15/45

60/20

24. How many methods are used to control motion blur?

2

3

4

5

Submit

26. What is the use of the video monitor as according to the sheet?

More sterile procedure

More than one person can see it

Less invasive

Recorded procedure

27. One method used to control motion blur is to use exposures that are short as possible, generally with intensifying screens of adequate speed.

What are the other two?

Careful suspension of the respirations with sand bags or compression band

By suspension of respirations when examining parts other than limbs

By suspension of respirations when examining the limbs

Careful mobilization of the camera with sand bags or compression band

Careful mobilization of the part with sand bags or compression band

Submit

28. How many effects of kvp on radiographic contrast are there?

5

2

4

3

6

29. Kilovolt (KV)controls the penetration of the x-ray beam. The higher the kv, the more powerful the beam.

1 kilovolt equals 100 volts of electricity.

True

False

1 kv equals 1000 volts of electricity

Explanation

1 kv equals 1000 volts of electricity