Mosby Chap 4 Q 75-100

Front 1

75. The use of the air gap technique:

Back 1

D) Works because scatter radiation travels in divergent paths and misses the film as a result of increased OID

Hint 1

A. Works because x-rays are absorbed in the air between the patient and the film.
B. Should occur when possible
C. May cause some magnification because of decreased OID.
D. Works because scatter radiation travels in divergent paths and misses the film as a result of increased OID.

Front 2

76. The use of technique charts:

Back 2

D) Is helpful when the manual techniques are used.

Hint 2

A. Is unnecessary for any exam because of the AECs
B. Does not require that the part thickness be measured with calipers
C. Is usually based on fixed mAs and variable kVp
D. Is helpful when the manual techniques are used.

Front 3

77. When AEC is used, increasing the kVp will:

Back 3

D) Have no effect on density.

Hint 3

A. Increase density proportionately
B. Increase radiographic contrast
C. Increase exposure time
D. Have no effect on density

Front 4

78. The function of automatic processing is to:

Back 4

C) Make the latent image visible

Hint 4

A. Make the manifest image visible
B. Convert unexposed silver halide crystals to black metallic silver
C. Make the latent image visible

Front 5

79. Which of the following are contained in the developer solution?

Back 5

C) 1,3,4,5,6,8

Hint 5

1. Activator
2. Hypo
3. Hardner
4. Preservative
5. Reducing Agents
6. Water
7. Acidifier
8. Restrainer

Front 6

80. Which of the following are contained in the fixer solution?

Back 6

A) 2,3,4,6,7

Hint 6

1. Activator
2. Hypo
3. Hardner
4. Preservative
5. Reducing agents
6. Water
7. Acidifier
8. Restrainer

Front 7

81. Which of the following statements is (are) true concerning developer solution?

Back 7

B) 2

Hint 7

1. The reducing agents convert all silver halide crystals to black metallic silver.
2. A hardner is added to the developer to control the swelling of the emulsion.
3. The activator keeps the chemicals at full strength.
4. The reducing agents convert all silver halide crystals with sensitivity specks to black metallic silver.
5. rapid oxidation of the reducing agents is prevented by mixing them in water.
6. The preservative keeps the finished radiograph from yellowing while in storage.

Front 8

82. Which of the following statements are false concerning the fixer solution?

Back 8

D) 1,2

Hint 8

1. Fixing agent clears all silver halide crystals from the emulsion.
2. Water keeps the fixer solution neutral.
3. Rapid oxidation of the solution is prevented by the use of a preservative.
4. The hardner shrinks and hardens the emulsion.
5. Hypo removes all unexposed silver halide crytals.

Front 9

83. Which of the following statements are true concerning automatic processing chemistry?

Back 9

C) 2,3,4,5,6,7

Hint 9

1. Developer is kept at 90 to 95 degress C.
2. Fixer is an acidic solution.
3. The preservative helps prevent rapid oxidation by room air.
4. Developer is an alkaline solution.
5. The restrainer prevents the reducing agents from developing the unexposed silver halide crytals.
6. Water is the solvent in which chemicals are mixed.
7. The activator softens and swells the films emulsion so that chemistry can come in contact with the silver halide crytals.
8. The hardner in the developer controls the swelling of the emulsion so that silver halide crytals do not escape into solution.

Front 10

84. The function of the wash tank is to:

Back 10

D) Remove chemistry from the film

Hint 10

A. Neutalize all chemistry
B. Stop development
C. Rinse away unexposed silver halide crytals
D. Remove chemistry from film

Front 11

85. Which of the following statements best describes the transport system of an automatic processor?

Back 11

A) Moves film through processor with a series of rollers and racks and agitates chemistry.

Hint 11

A.Moves film through processor with a series of rollers and racks and agitates chemistry.
B. Moves film through the processor and maintains solution strength.
C. Moves film through the developer and fixer and agitates chemistry.
D. Moves film through the processor, maintains solution strngth, and activates the replenishment system.

Front 12

86. Which of the following statements best describes the replenishment system of an automatic processor?

Back 12

B) Adds fresh developer and fixer each time a film is fed into the processor.

Hint 12

A. Adds fresh developer, fixer, and water each time a film is fed into the processor.
B. Adds fresh developer and fixer each time a film is fed threough the processor.
C. Adds fresh developer as film is being fed into the processor.
D. maintains solution strength and temperature as film is fed into the processor.

Front 13

87. Which of the following statments best describes the recirculation system of an automatic processor?

Back 13

C) Agitates developer solution, maintains temperature, removes by-products of chemical reactions.

Hint 13

A. Adds fresh chemistry and maintains temperature.
B. Maintains developer temp. at 90 to 95 degrees F.
C. Agitaes developer solution, maintains temp., removes by-products of chemical reactions.
D. Maintains chemistry temp. and concentration.

Front 14

88. Which of the following statements best describes the dryer system of an automatic processor?

Back 14

D) Helps seal emulsion with heat, dries film, works at appoximately 120 degrees F.

Hint 14

A. Helps seal emusion with heat, dries film, works at approximately 120 C.
B. Dries film as it passes between tubes blowing hot air.
C. Dries film after it leaves the fixer and seals emulsion with hot air.
D. Helps seal emulsion with hea, dries film, works approximately 120 F.

Front 15

89. Which of the following statements describe the maintenance schedule for an automatic processor?

Back 15

D) 1,4,5,6,7

Hint 15

1. wash tank should be drained at the end of each workday.
2. Entire processor should be cleaned weekly.
3. Fresh developer should be added daily after cleaning developer tank.
4. Lid on processor should be left open after shutdown to allow chemical evaporation to escape.
5. several 14- X 17- inch films should be run through the processor at startup.
6. Crossover racks should be cleaned at startup and shutdown.
7. all tanks, racks, and rollers should be thoroughly cleaned monthly.
8. Starter solution should be added to developer and fixer during refilling after cleaning.

Front 16

90. When sensitometric testing is performed on an automatic processor, the acceptable range of variation for speed and contrast is:

Back 16

B) + - 0.10

Hint 16

A. + - 0.05
B. + - 0.10
C. + - 0.01
D. + - 0.25

Front 17

91. When sensitrometric testing is performed on an automatic processor, the acceptable range of variation for base plus fog is:

Back 17

A) + - 0.05

Hint 17

A. + - 0.05
B. + - 0.10
C. + - 0.01
D. + - 0.25

Front 18

92. Sensitometric testing of automatic processors should be performed:

Back 18

C) Daily

Hint 18

A. Weekly
B. Monthly
C. Daily
D. Several times each day.

Front 19

93. Emulsion scatches that run the length of the film in the direction of film travel are usually caused by:

Back 19

D) Guide shoes out of adjustment.

Hint 19

A. Pi lines
B. Improper cleaning of rollers
C. Inadequate replenishment.
D. Guide shoes out of adjustment.

Front 20

94. Contamination of developer by fixer will cause:

Back 20

C) Increased fog on the radiograph

Hint 20

A. Increased contrast
B. A chemical reaction that will speed up processing.
C. Increased fog on the radiograph.

Front 21

95. Jamming of films in the processor may be caused by:

Back 21

A) rollers out of alignment.

Hint 21

A. rollers out of alignment.
B. Inadequate washing.
C. Inadequate recirculation.
D. Large silver halide crytals.