Help
Options
Question
What are the 3 cardinal principles of radiation protection?
click to flip
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't know
Question
What are the main concerns of Health Physics?
Remaining cards (22)
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
BushongCh 37
Ch 37 Health Physics
| Question | Answer |
|---|---|
| What are the 3 cardinal principles of radiation protection? | time, distance, shielding |
| What are the main concerns of Health Physics? | Providing radiation protection for the radiation workers and the public |
| What was the 1st project the radiation physicists worked on? | The A bomb |
| How is exposure measured? | Exposure= Exposure rate X Exposure time |
| Work the problem: If a rad worker is exposed to 230 mR/hr from a radiation source. If the worker remains in that source for 36 min, What will be the total amout of occupational exposure? | Occ exposure= 230mR/hr X 36min/60 min 8280/60 = 138 mR |
| During a fluoro case or a C-arm case, what is the patient considered to be? | the point source |
| 1 TVL = _____ HVL | 3.3 |
| This reminde the radiologist that a considerable amount of time has passed in a fluoro exam? | 5 min timer |
| What is a TVL? | It is the thickness of an absorber that reduces the radiation intensity to 1/10 th its original value |
| What is the effective dose? | the equivalent whole body dose |
| what is the whole body dose? | the weighted average of the radiation dose to various organs and tissues |
| Who is the NCRP? | The national council of radiation protection |
| What does the NCRP do? | Make recommendations reguarding dose limits |
| What are the dose limits based on? | A Linear, non-threshold dose responce |
| Whay would following ALARA be useful in x-ray? | Reduces occupational exposure |
| If you ________ your distance, ________ your time, then you will __________ exposure levels. | increase, decrease, decrease |
| A CT scan of the abdomen and pelvis results in 2000 mrad. How do you find the effective dose? Gonad .2, Colon .12, Liver .5 | Multiply each given factor by the total amount of dose recieved. total of 740 mrad |
| What type of radiologic device is a sealed radioactive material that directly exposes a person? | RED Radiation exposure device |
| This devices when exploded disperses radioactive contimants over a wide area? | RDD radiological dispersal device |
| This device contains nuclear material that can produce mass devistation and destruction if detonated? | IND Improvised nuclear device |
| What is the Inverse Square Law used for? | calculate the exposure and for radiation protection |
| What is the main concern for the first responder? | To prevent injury and death and to attend to the medical needs of the victims |
| Who are considered to be first responders in a radiological terrorist attack? | Police, fire dept personnel, ems, rad techs, hospital personnel |
Created by:
radgirl37
Popular Radiology sets