Question 1

Which examination does not exhibit an inherently large OID?

Accepted Answer

A)  AP lumbar spine
B)  lateral cervical spine
C)  lateral chest
D)  AP facial bones A

Question 2

Large patients receive a greater exposure than small patients because their

Accepted Answer

A)  SOD is decreased.
B)  OID is increased.
C)  entrance skin surface is closer to the source.
D)  all of the above

Question 3

Match the following choices with the appropriate statement.
-SID MF+

Accepted Answer

A)  kidneys
B)  SID SOD
C)  elongation
D)  SOD
E)  object sizeF) scapulaG) foreshorteningH) patella

Question 4

Which of the following occurs when the tube or the image receptor is not properly aligned?

Accepted Answer

A)  elongation
B)  magnification
C)  foreshortening
D)  minification

Question 5

Performing a routine chest radiograph in the anterior-posterior (AP)  projection will

Accepted Answer

A)  decrease heart size on the image.
B)  demonstrate higher resolution of the anterior ribs.
C)  produce improved resolution of the thoracic spine.
D)  decrease breast exposure.

Question 6

The ____ the SID, the ____ the magnification.

Accepted Answer

A)  greater; larger
B)  greater; smaller
C)  lesser; smaller
D)  SID has no effect on magnification.

Question 7

As OID increases and SID remains constant, entrance skin exposure (ESE)

Accepted Answer

A)  remains unchanged.
B)  decreases.
C)  increases.
D)  none of the above

Question 8

Calculate the magnification factor when the SID is 40 in.and the OID is 5 in.

Accepted Answer

The answer of Calculate the magnification factor when the SID...

Question 9

Size distortion in radiography can be ____ only.

Accepted Answer

A)  foreshortening
B)  magnification
C)  elongation
D)  minimization

Question 10

The magnification factor for a radiographic procedure is calculated at 1.25.It may be assumed that there is a ____ magnification of the object size.

Accepted Answer

A)  25%
B)  125%
C)  0.25%
D)  1.25%

Question 11

If an object is measured as 4 in.in diameter on the image and 2 in.from the film, what is the actual size of the object if the SID is 40 in.?

Accepted Answer

The answer of If an object is measured as 4...

Question 12

Calculate the magnification factor when the SID is 72 in.and the OID is 2 in.

Accepted Answer

The answer of Calculate the magnification factor when the SID...

Question 13

Match the following choices with the appropriate statement.
-MF

Accepted Answer

A)  kidneys
B)  SID SOD
C)  elongation
D)  SOD
E)  object sizeF) scapulaG) foreshorteningH) patella B

Question 14

If an object measures 2 cm and the image measures 4 cm, what is the percent magnification of the object?

Accepted Answer

The answer of If an object measures 2 cm and...

Question 15

If an object is measured as 4 in.in diameter on the image and 4 in.from the film, what is the actual size of the object if the SID is 40 in.?

Accepted Answer

3.6 in.

Question 16

Match the following choices with the appropriate statement.
-inherently magnified in AP projection

Accepted Answer

A)  kidneys
B)  SID SOD
C)  elongation
D)  SOD
E)  object sizeF) scapulaG) foreshorteningH) patella

Question 17

A renal calculus that measures 0.2 mm in size

Accepted Answer

A)  cannot be visualized with an effective focal spot of 0.5 mm focal spot due to penumbral overlap.
B)  is best seen with magnification and a large focal spot.
C)  most likely will be visualized with a small radiographic tube angle using a large target angle.
D)  all of the above

Question 18

Size distortion is controlled by

Accepted Answer

A)  SID.
B)  OID.
C)  radiographic distances.
D)  all of the above

Question 19

In order to achieve a true SID of 40" with an x-ray tube angle of 30 degrees, the overhead scale should read

Accepted Answer

A)  23 inches.
B)  95 cm.
C)  34.6 inches.
D)  both b and c

Question 20

Proper alignment is achieved when the central ray is ____ to the part and ____ to the image receptor.

Accepted Answer

A)  perpendicular; parallel
B)  parallel; perpendicular
C)  perpendicular; perpendicular
D)  parallel; parallel

Exam 29: Distortion

Which examination does not exhibit an inherently large OID?

Correct AnswerverifiedA

Large patients receive a greater exposure than small patients because their

Correct AnswerverifiedShow Answer

Match the following choices with the appropriate statement. -SID MF+

Correct AnswerverifiedShow Answer

Which of the following occurs when the tube or the image receptor is not properly aligned?

Correct AnswerverifiedShow Answer

Performing a routine chest radiograph in the anterior-posterior (AP) projection will

Correct AnswerverifiedShow Answer

The ____ the SID, the ____ the magnification.

Correct AnswerverifiedShow Answer

As OID increases and SID remains constant, entrance skin exposure (ESE)

Correct AnswerverifiedShow Answer

Calculate the magnification factor when the SID is 40 in.and the OID is 5 in.

Correct AnswerverifiedShow Answer

Size distortion in radiography can be ____ only.

Correct AnswerverifiedShow Answer

The magnification factor for a radiographic procedure is calculated at 1.25.It may be assumed that there is a ____ magnification of the object size.

Correct AnswerverifiedShow Answer

If an object is measured as 4 in.in diameter on the image and 2 in.from the film, what is the actual size of the object if the SID is 40 in.?

Correct AnswerverifiedShow Answer

Calculate the magnification factor when the SID is 72 in.and the OID is 2 in.

Correct AnswerverifiedShow Answer

Match the following choices with the appropriate statement. -MF

Correct AnswerverifiedB

If an object measures 2 cm and the image measures 4 cm, what is the percent magnification of the object?

Correct AnswerverifiedShow Answer

If an object is measured as 4 in.in diameter on the image and 4 in.from the film, what is the actual size of the object if the SID is 40 in.?

Correct Answerverified3.6 in.

Match the following choices with the appropriate statement. -inherently magnified in AP projection

Correct AnswerverifiedShow Answer

A renal calculus that measures 0.2 mm in size

Correct AnswerverifiedShow Answer

Size distortion is controlled by

Correct AnswerverifiedShow Answer

In order to achieve a true SID of 40" with an x-ray tube angle of 30 degrees, the overhead scale should read

Correct AnswerverifiedShow Answer

Proper alignment is achieved when the central ray is ____ to the part and ____ to the image receptor.

Correct AnswerverifiedShow Answer

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A

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Match the following choices with the appropriate statement. -SID MF⁺

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The the SID, the the magnification.

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B

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3.6 in.

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In order to achieve a true SID of 40" with an x-ray tube angle of 30degrees, the overhead scale should read

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Proper alignment is achieved when the central ray is to the part and to the image receptor.

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