LPT Exam
Study online at https://quizlet.com/_i20x4n
1. how many cm for the patient to get gonad shielding?: 5cm
2. how many degrees of an angle for the tangential projection (gaynor-hart
method) of the wrist: 25-30 degrees
3. CR for clavicle AP axial and pa axial: ap- 15 to 30 cephalad pa- 15 to 30 caudad to midclavicle
4. What is the NCRP recommended annual effective dose limit for occupational
exposure?: 5.0 rem or .05 sv
5. what is the ncrp recommended monthly dose for pregnant worker?: .05 rem or
.0005 sv
6. what is the ncrp recommendation for filtration?: 2.5 mm of al equivalent
7. radiation monitoring of personnel is required with what percentage of annual
occupational effective dose limit is likely to be received?: 10%
8. what is the conventional radiation unit of absorbed dose?: rad
9. what is micro recommendation for lead equivalency in aprons?: .5 mm
10. what is the standard control limit for the field light to radiation field align-
ment test?: +- 2% SID
11. what is the standard control limit fpr the beam alignment test?: within 1 degree
perpendicular
12. how often should gloves be checked for holes?: every 6 months
13. how can detector fog be prevented when using computed radiography
cassettes?: protect the cassette before and after exposure
14. if the radiographic image is overexposed which of the following changes
would correct the problem?: decrease mAs
15. scatter radiation fog affects radiographic quality by causing: decreased contrast
16. what does quantum mottle (noise) look like on a radiographic image?: finely
speckled or grainy areas
17. quantum mottle with a digital imaging system is caused by: the mAs being set too
low
18. what is the appearance of a high signal to noise ratio image?: highly detailed, with
very little quantum mottle
19. what is the proper method for storing xray film?: standing on edge
20. what describes the action of the developer in an automatic film processor?-
: changes the exposed silver halide crystals into black, metallic silver
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Study online at https://quizlet.com/_i20x4n
1. how many cm for the patient to get gonad shielding?: 5cm
2. how many degrees of an angle for the tangential projection (gaynor-hart
method) of the wrist: 25-30 degrees
3. CR for clavicle AP axial and pa axial: ap- 15 to 30 cephalad pa- 15 to 30 caudad to midclavicle
4. What is the NCRP recommended annual effective dose limit for occupational
exposure?: 5.0 rem or .05 sv
5. what is the ncrp recommended monthly dose for pregnant worker?: .05 rem or
.0005 sv
6. what is the ncrp recommendation for filtration?: 2.5 mm of al equivalent
7. radiation monitoring of personnel is required with what percentage of annual
occupational effective dose limit is likely to be received?: 10%
8. what is the conventional radiation unit of absorbed dose?: rad
9. what is micro recommendation for lead equivalency in aprons?: .5 mm
10. what is the standard control limit for the field light to radiation field align-
ment test?: +- 2% SID
11. what is the standard control limit fpr the beam alignment test?: within 1 degree
perpendicular
12. how often should gloves be checked for holes?: every 6 months
13. how can detector fog be prevented when using computed radiography
cassettes?: protect the cassette before and after exposure
14. if the radiographic image is overexposed which of the following changes
would correct the problem?: decrease mAs
15. scatter radiation fog affects radiographic quality by causing: decreased contrast
16. what does quantum mottle (noise) look like on a radiographic image?: finely
speckled or grainy areas
17. quantum mottle with a digital imaging system is caused by: the mAs being set too
low
18. what is the appearance of a high signal to noise ratio image?: highly detailed, with
very little quantum mottle
19. what is the proper method for storing xray film?: standing on edge
20. what describes the action of the developer in an automatic film processor?-
: changes the exposed silver halide crystals into black, metallic silver
1/2
