Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
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
Normal Size Small Size show me how
Rad Protection
Chapter 1 Intro to Rad Protection
| Question | Answer |
|---|---|
| X-rays were discovered in ____. | 1895 |
| X-rays are a form of ______ radiation. | ionizing |
| An exposure to radiation can create ____ atoms, create _____ radicals that produce toxins within the cell and can change the ___ of the cell. | unstable; free; function |
| What does ALARA stand for? What is another name for ALARA? | As low as reasonably achievable - ORP, Optimization for Radiation Proection |
| A CXR has __ mrem and a CT Abd has ____ mrem | 10; 1000 |
| Radiation exposure from a CT scan is about ___ times higher than an ordinary CXR. | 100 |
| ____ is energy that passes from one location to another and can have many manifestation. | Radiation |
| What are the two types of radiation? | electromagnetic and particulate |
| BERT stands for ____ and the annual exposure is ___ mrem. | Background equivalent radiatin time; 620 |
| X-radiation and Gamma radiation are classified as ____ radiation. | electromagnetic |
| X-rays are produced ___ the nucleus by accelerating electrons. (have no mass/charge) | outside |
| Gamma rays are produced ___ the nucleus. | inside |
| Give two examples of particulate radiation: | alpha and beta |
| Alpha radiation is produced by _____ disintegration; it is made up of ___ particles. | nuclear; 4 |
| Alpha radiation has very ___ particles and ___ penetrability. | large; low |
| Beta radiation is produced by ___ ____; beta is ____ times lighter than alpha particles. | pair production; 8000 |
| Beta penetrates ____ times more than alpha radiation. | 100 |
| Natural background radiation is ___ mrem vs. ___ mrem of manufactured radiation. | 295;65 |
| ____ radiation are radioactive materials from the earth. (uranium, radium, thorium) | Terrestrial |
| ___ radiation comes from solar rays. | Cosmic |
| ____ radiation comes from the body tissues. (potassium-40, carbon-14) | Internal |
| ____ gas is found in the air. | Radon |
| ___ gas is the largest contributor of natural radiation. | Radon |
| ____ gas is found in granite and come up through the soil. | Radon |
| Radon gas causes ___ to ___ radon induced lung cancer deaths in the US each year. | 800; 21000 |
| Porcelain dentures contain ____ and expose the mouth to ___ mrem/year. | potassium-40;130 |
| Air travel exposes us to about __ mrem/hour flight. | 1 |
| Full body scanners emit ___ photons, which are low energy. | terahertz |
| Who approved full body scanners? | FDA |
| ____ body scans in a years would equal the dose to 1 CXR. | 1000 |
| Average dose received within a 50 mi radius in Three Mile Island was __ mrem. | 8 |
| Abdomen or pelvis dose fro a CT is ____ mSv. | 8-10 |
| What tissue is the most sensitive in the head area? | eyes |
| Hematologic depression occurs at ___ rad; temporary sterility occurs at ___ rad and permanent sterility occurs at ___ rad. | 25; 200-250; 500-600 |
Created by:
teachable monkeys
Popular Radiology sets