Chapter 26- Simplifying & Standardizing Technique

Which of the following are recommended areas for standardization within the imaging department:

a. Radiographic projection routines

b. Exposure factors

c. Image processing parameters

d. All of the above

None of the above

d. All of the above

Standardizing and simplifying technique:

a. Increases consistency

b. Narrows the range of potential causes of equipment failures

c. Reduces the probability of errors

d. All of the above

e. None of the above

d. All of the above

For digital radiography, the textbook generally recommends the variable kVp approach for techniques, but it is important that mAs be changed instead of kVp if:

a. Violating the minimum kVp rule may result in inadequate penetration

b. Scatter radiation may be produced

c. Body part thickness changes

d. Consistent image brightness is desired

a. Violating the minimum kVp rule may result in inadequate penetration

Using the "base-60" method for variable kVp, what would be the calculated kVp for a body part measuring 14 cm:

a. 28 kVp

b. 60 kVp

c. 74 kVp

d. 88 kVp

e. 102 kVp

d. 88 kVp

For distal extremity and skull procedures, a well-made technique chart for "average" patients would be usable without any modification on what percentage of all adult patients:

a. 50%

b. 66%

c. 75%

d. more than 90%

d. more than 90%

Even for body torso procedures, an "average" technique will be usable without modification

for what percentage of all adult patients?

a. 25%

b. 33%

c. 50%

d. 67%

d. 67%

A premature baby has a body torso shape which is circular rather than oval in cross-section. On this patient, for radiography of the chest, when changing from the AP to the lateral projection what overall technique adjustment should be made from the AP technique?

a. 4 times

b. 3 times

c. double

d. use about the same technique

d. use about the same technique

For the average adult torso, to maintain adequate exposure at the image receptor, a full 45-

degree oblique position will require what change in technique from the AP projection?

a. 50% increase

b. double

c. 4 times

d. 5 times

b. double

Within a given procedure, if possible, the only variable to be changed from one projection to

the next should be:

a. kVp

b. mA

c. exposure time

d. phase

c. exposure time

The only disadvantage to using the same optimum mA station throughout a particular

radiographic procedure is the:

a. probability of patient motion

b. heat load on the anode

c. complication of setting technique

d. poor calibration of mA stations

a. probability of patient motion

With digitized imaging, the use of a variable-kVp, high-kVp approach to radiograph

technique:

a. can save patient exposure

b. can frequently present fog in the final image

c. results in wildly variable contrast in the final image

d. all of these

e. none of these

d. all of these

The most important reason to use technique charts is that:

a. more consistent radiographic quality is achieved

b. professionalism is enhanced

c. departmental costs for repeats can be cut

d. radiation exposure to patients can be cut

b. professionalism is enhanced

It is recommended for completeness that the torso procedures on a technique chart be

organized into columns for every cm change in part thickness:

a. 1

b. 2

c. 4

d. 5

e. 10

b. 2

Which of the following is not a recommended policy for technique charts:

a. allow all radiographers using it to have input into its development

b. keep equipment calibrated

c. update the chart every 6 months

d. allow individual radiographers to change the written techniques

c. update the chart every 6 months (shouldn't create new chart every 6 mos)

The development of radiographic techniques should be:

a. by trial and error

b. considered an art

c. a systematic science of estimation

d. left by managers to the staff technologists

a. by trial and error

Which of the following is used properly only in conjunction with measuring calipers?

a. manual technique charts

b. automatic exposure technique charts

c. both of these

d. neither of these

a. manual technique charts

Which of the following is never a necessary item for an automatic exposure technique chart?

a. back-up exposure time

b. photocell configuration

c. kVp

d. mAs

d. mAs

Using proportional anatomy, when changing from an average AP pelvis projection to an

average AP lumbar spine, adjust overall technique as follows:

a. double

b. cut to one-half

c. triple

d. cut to one-third

e. use equal technique

e. use equal technique

Using proportional anatomy, when changing from an average AP cervical spine projection to

an average AP shoulder, adjust overall technique as follows:

a. double

b. cut to one-half

c. triple

d. cut to one-third

e. use equal technique

e. use equal technique

Using proportional anatomy, when changing from an average AP elbow projection to a PA

wrist, adjust overall technique as follows:

a. double

b. cut to one-half

c. triple

d. cut to one-third

e. use equal technique

b. cut to one-half

Using proportional anatomy, when changing from an average AP ankle projection to an

AP knee, adjust overall technique as follows:

a. double

b. cut to one-half

c. quadruple

d. cut to one-fourth

e. use equal technique

a. double

Using proportional anatomy, when changing from an average AP lumbar spine projection to a true 45-degree lumbar spine, adjust overall technique as follows:

a. double

b. cut to one-half

c. triple

d. cut to one-third

e. use equal technique

a. double

Using proportional anatomy, when changing from an AP foot projection to the lateral foot,

adjust overall technique as follows:

a. double

b. cut to one-half

c. triple

d. cut to one-third

e. use equal technique

a. double (lateral foot double size foot)

Using proportional anatomy, when changing from an average AP projection for a barium

enema to a 30-degree oblique projection, adjust overall technique as follows:

a. double

b. cut to one-half

c. increase by 50%

d. cut by 30%

e. use equal technique

c. increase by 50%

Using proportional anatomy, when changing from a PA skull projection to a lateral skull,

adjust overall technique as follows:

a. double

b. cut to one-half

c. quadruple

d. cut to one-fourth

e. use equal technique

b. cut to one-half

Using proportional anatomy, when changing from an average AP abdomen projection to an

average Townes projection of the skull, adjust overall technique as follows:

a. double

b. cut to one-half

c. triple

d. cut to one-third

e. use equal technique

e. use equal technique (same thickness)

Using proportional anatomy, when changing from an average AP cervical spine projection to

a lateral skull, adjust overall technique as follows:

a. double

b. cut to one-half

c. triple

d. cut to one-third

e. use equal technique

e. use equal technique

Using proportional anatomy, when changing from an average PA chest projection to the

lateral chest, adjust overall technique as follows:

a. double

b. cut to one-half

c. quadruple

d. cut to one-fourth

e. use equal technique

c. quadruple (PA-> Lat= 4x)

Using proportional anatomy, when changing from an AP chest projection on a healthy 6-

month old baby to the lateral chest, adjust overall technique as follows:

a. double

b. cut to one-half

c. triple

d. cut to one-third

e. use equal technique

a. double (baby size smaller, AP-> Lat=x2)