Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


radiation protection,physics,and radiobiology

1- biologic material irradiated under hypoxic conditions is less sensitive than when irradiated under oxygenated condition.(langeQ&A p.125)
what is the monthly gestational dose- equivalent limit for embryo/fetus of a pregnant radiographer according to the NCRP? 0.5mSv (langeQ&A p.125)
2-what is the monthly gestational dose- equivalent limit for embryo/fetus of a pregnant radiographer according to the NCRP? 0.5mSv (langeQ&A p.125)
3- stochastic/ probabilistic effects of radiation are those that may be described as "all-or-nothing" effects and are late effects(langeQ&A p.125)
4- is 50% of pubic exposure to ionizing radiation is from medical sources (true or false) true (langeQ&A p.125)
5-what cell type has the greatest radiosensitivity in the adult human? lymphocytes (langeQ&A p.125)
6- what is the most likely to occur when the interaction between ionizing radiation and the target molecule indirect effect (langeQ&A p.126)
7- sources of natural background radiation include ________,________, and ______________ radon, internal sources, and thoron (langeQ&A p.126)
8- what is kerma? it is the unit that used to express kinetic energy released in matter(langeQ&A p.126)
9- ______________ acute radiation syndrome requires the largest exposure before the associated effects become apparent central nervous system (langeQ&A p.126)
10-what is established annual occupational dose-equivalent limit for the lens of the eye? 150 mSv (langeQ&A p.126)
11- when is occupational radiation monitoring is required? when the individual might receive more than one-tenth the annual dose limit (langeQ&A p.126)
12-sources of natural background radiation contributing to whole- body radiation dose include___________&_____________ terrestrial radionuclides & internal radionuclides (langeQ&A p.126)
13- define radiolysis? irradiation of water molecules within the body and their resulting breakdown (langeQ&A p.126)
14-diagnostic x-radiation may be correctly described as low energy, low LET(langeQ&A p.126)
15-_______ is used to account for the differences in tissue characteristic when determining effective dose to biologic material. tissue weighting factor (Wt)(langeQ&A p.127)
16- what is the x-ray interaction with the matter that is responsible for majority of the scatter radiation reaching IR? Compton scatter (langeQ&A p.127)
17- lead aprons function to protect the user from ______ scattered radiation (langeQ&A p.127)
18- late radiation- induced somatic effects include ______,_______,&________ thyroid cancer, cataractogenesis , and genetic mutations (langeQ&A p.127)
19- the law of Bergonie and Tribondeau states that cells are more radiosensitive if they are _________&__________ highly proliferative and immature (langeQ&A p.127)
20- a thermoluminescent dosimetry system would use ________ crystals lithium fluoride (langeQ&A p.127)
21- sources of secondary radiation include ____________&___________ leakage radiation and scattered radiation(langeQ&A p.127)
22-focal spot size has an effect on patient dose (true or false) false (langeQ&A p.128)
23- when is the photoelectric effect occur ? 1- absorbers having a high Z number 2-positive contrast media (langeQ&A p.128)
24- an increase in total filtration of the x-ray beam will increase________ beam HVL (langeQ&A p.128)
25-in radiation protection, to determine the product of absorbed dose, weighting factors, and radiation weighting factors is EfD(langeQ&A p.128)
26-what is recommended for the pregnant radiographer? wear second dosimeter under the lead apron (langeQ&A p.128)
27- the annual dose limit for medical imaging personnel includes radiation from occupational exposure (true or false) true (langeQ&A p.128)
28-what is the benefit of moving the image intensifier closer to the patient during fluroroscopy? decrease patient dose - improves image quality - decreases the SID (langeQ&A p.128)
29- what cells are composed of non-dividing, differentiated cells? neurons and neuroglia (langeQ&A p.129)
30- is 0.25 mm pb equivalent minimum lead requirement for lead aprons. (true or false) true (langeQ&A p.129)
31- what is the most radiosensitive portion of GI tract? small bowel (langeQ&A p.129)
32- immature cells are called stem cells and undifferentiated cells (langeQ&A p.129)
33- define scattering? is the term used to describe x-ray photon interaction with the matter and the transference of part of the photon's energy to matter.(langeQ&A p.129)
34- what is the advantages of anatomic compression during procedure? decreased patient dose - improved contrast resolution - improved spatial resolution (langeQ&A p.129)
35- does the filtration affect the primary beam and how? yes, it increase the average energy of the primary beam.(langeQ&A p.129)
36-useful x-ray beam can be directed toward is called primary barrier (langeQ&A p.129)
37- the annual dose limit for occupationally exposed individuals is valid for ____________&______________&___________________- beta, x-, and gamma radiation(langeQ&A p.129)
38- patient dose increase as fluoroscopic FOV decreases (true or false) true (langeQ&A p.130)
39- what dose REM(Sv) measure? is used to express ionizing radiation dose to biologic material (langeQ&A p.130)
40- define LET? a method of expressing radiation quality and a measure of the rate at which radiation energy is transferred to soft tissue (langeQ&A p.130)
41- what is epilation? when the skin response to radiation exposure that appears as hair loss (langeQ&A p.130)
42- give an examples of late effect of ionizing radiation on humans leukemia -local tissue damage - malignant disease (langeQ&A p.130)
43- define attenuation ? it is the reduction in the intensity of an x-ray beam as it passes through material (langeQ&A p.130)
44- the largest amount of diagnostic x-ray absorption is most likely to occur in lung (true or false) false in bone (langeQ&A p.131)
45- according to NCRP , leakage radiation from the x-ray tube must not exceed 100mR/h(1.0 mGya/hr) (true or false) true (langeQ&A p.131)
46-primary radiation barriers usually require 1/8 inch lead (true or false) false 1/16 inch (langeQ&A p.132)
47- what is the annual effective occupational dose-equivalent limit ? 5 rem (50mSv) (langeQ&A p.133)
48- (true or false) as LET increases, RBE increases. true (langeQ&A p.132)
49- an increase of 1.0-mm added aluminum filtration of the x-ray beam would have increase in average energy of the beam (langeQ&A p.133)
50- correctly used to describe x-ray beam quality HVL (langeQ&A p.134)
51- the SSD in mobile fluoroscopy must be a minimum of 12 inch (langeQ&A p.135)
52- what is the annual occupational whole-body dose-equivalent limit, according to NCRP? 50 mSv (langeQ&A p.135)
53- what would result in the greatest skin dose? short SID (langeQ&A p.136)
54-what type of ionizing radiation is described as having an RBE of 1.0? diagnostic x-rays (langeQ&A p.136)
Created by: alaasaud