rad bio ch 37

Question 1

two reasons why increase exposure

Answer 1

• 18% in xrays per year

- increase concern for risk of xrays

Question 2

three ways of patient dose

Answer 2

• entrance skin dose
• gonadal dose
• bone marrow

Question 3

patient dose is expressed as entrance ______(3) dose

Answer 3

skin, gonadal, bone marrow

Question 4

entrance skin dose is refered to _____

Answer 4

patient dose

Question 5

entrance skin dose usually measured with

Answer 5

TLD

Question 6

for average fluro exam one can assume an ESD of _______

Answer 6

40 mGyt/min

Question 7

the genticially significant is the ___ dose that if received by every member of population, would produce the total genetic effect on the population as the sum of the _____doses actually received

Answer 7

• gonad

- indiidual

Question 8

GSD considers (3)

Answer 8

age
sex
expected number of children

Question 9

______(2) currently are the only acceptable techniques

Answer 9

screen film

digital

Question 10

glandular dose is ___% of ese

Answer 10

15

Question 11

glandular dose should not exceed ____

with contact mammography and _____ mGyt/view with grid

Answer 11

• 1 mGyt/view

- 3 mGyt/view

Question 12

it is essential that ct collimators be monitored periodically for proper ____

Answer 12

adjustment

Question 13

the higher the ____ value, the lower the patient dose will be

Answer 13

multislice

Question 14

a reduction in the noise or beam width , while other factors remain constant, ______ patient dose

Answer 14

increases