Deck 39: Patient Radiation Dose Management

Question 1

During mammography, axillary projections should be done only on request of the:

A) ordering physician.
B) patient.
C) radiologist.
D) technologist performing the examination.

Answer 1

radiologist.

Question 2

The period of major organogenesis is during the ________________ of pregnancy.

A) first 2 weeks
B) 2nd to 10th week
C) 2nd trimester
D) 3rd trimester

Answer 2

2nd to 10th week

Question 3

When a pregnant patient must undergo a radiographic procedure, which of the following practices will minimize radiation exposure?

A) Selecting technical exposure factors that are appropriate for the part of the body to be radiographed
B) Opening the x-ray beam collimator shutters as wide as possible to ensure complete coverage of the image receptor
C) Precisely collimating the radiographic beam to include only the anatomic area of interest and shielding the lower abdomen and pelvis when this area does not need to be included in the area to be irradiated
D) A and C

Answer 3

A and C

Question 4

Glandular dose from mammography is approximately _____ of the ESD.

A) 5%
B) 15%
C) 100%
D) 200%

Question 5

CT is considered a low-dose procedure.

Question 6

During a radiographic examination, which of the following combinations of technical exposure factors and filtration reduce patient radiation dose?

A) Lower kVp, higher mAs, decreased filtration
B) Higher kVp, lower mAs, increased filtration
C) Higher kVp, higher mAs, decreased filtration
D) Lower kVp, lower mAs, increased filtration

Question 7

Patient dose is usually estimated by conducting simulated x-ray examinations with __________________________.

A) human subjects
B) laboratory animals
C) human phantoms and test objects
D) All of the above

Question 8

Patient dose can be reduced by using _____________________. I. faster screens
II) higher kVp
III) increased distance

A) I only
B) II only
C) I and II
D) I, II, and III

Question 9

The dose in CT is lower if the multislice number is higher.

Question 10

Digital mammography results in lower doses than screen/film mammography.

Question 11

Breast dose from a scoliosis exam can be reduced by using the __________________. I. AP projection
II) PA projection
III) lead shielding

A) I
B) II
C) I and III
D) II and III

Question 12

What are the only acceptable techniques for mammography?
I.Screen/film
II.Digital
III.Xerography

A) I only
B) II only
C) I and II
D) I, II, and III

Question 13

Which exam does not have one of the highest repeat rates?

A) Lumbar spine
B) KUB
C) Chest x-ray
D) Thoracic spine

Question 14

Performing routine x-ray exams without indication is acceptable for ______________.

A) preemployment physicals
B) all hospital admissions
C) annual routine physicals
D) None of the above

Question 15

The frequency of x-ray examinations being performed is increasing in all age groups.