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Rad review for fin 1
reviewing for final in first semester of Casey's class uafs
Question | Answer |
---|---|
What did William Conrad Roentgen Die from? | Colon Cancer |
What honors did Roentgen 's discovery earn him? | 1901 Nobel prize in Physics |
What is Evangelista Torricelli given credit for? | Borometer |
special protection should be taken to prevent excessive exposure to ? | Ionizing radiation |
This is a form of non-ionizing radiation? | sonography |
An individual who specializes in using x rays to create images of the body is known as a ? | Radiographer |
a discipline that visualizes sectional anatomy by the recording of a predetermined plane in the body is ? | Computed tomography |
An individual who specializes in carrying out treatments designed to correct or improve the function of a particular body part or system is known as a ? | Therapist |
What are the two categories of sources of radiation? | 1. Man-made 2. Natural/Background |
What are three examples of man made radiation? | 1. Nuclear energy 2. medical or dental x-rays 3. consumer products |
_____ has carbon in it. | Any organic material |
ages considered child bearing years | 12-60 |
who should you shield? | The patient yourself anyone in room |
any x-ray emitted from window | Primary beam |
What are the three principle of alara | 1. time 2. distance 3. shielding |
how far away can an x ray travel? | less than 6 feet |
tube leakage should not exceed _____ MR/hour at a distance of 1 meter from the source? | 100 |
The worse place to be to absorb scatter radiation is? | Right next to the patient |
NCRP says that lead aprons must be at least a minimum of ________ of lead equivalency. | .5 milameters of lead equivalency. |
Gloves and drapes and bucky slot cover need to be a minimum of ________. | .25 mm Pb |
A thyroid shield needs to be a minimum of ____. | .5 mm PB |
Anywhere primary beam points you have to have ________ barriers. | Primary barriers |
Primary barriers have to be _______ inches of Pb. | 1/16 inches and 7 feet tall |
Secondary barriers protects against scatter and leakage and has to be a minimum of ______Inches of Pb. | 1/32 inches |
The two types of barriers are _______ and _______. | Primary and secondary |
This is used to measure the exposure in air. | Roentgen |
1 rad does not equal one _______. | gray |
100 rad = _______. | 1 gray |
1000 rem = _________. | 1 seivert |
REM Radiation Equivalent Man | What the techs exposure is measured in. |
The quality factor of x ray | 1 |
Curie | measure radioactivity |
Radiation absorbed dose. Who is absorbing it? | The patient |
Rem = Rad times______________. | Quality factor |
What are three types of monitoring devises? | 1. Film badge 2. OSL 3. TLD |
pocket dosimeter | looks like pocket light provides an instant reading (are very inaccurate) |
Film badge | the only permanent record. |
OSL | optical laser uses aluminum oxide |
TLD | Thermo luminescence dosimetry uses heat to return crystal to natural state |
1 curie = 1 _____________. | Becquerel |
Annual dose limit for occupational worker | 50 msv or 5 rem |
Cumulative lifetime dose | 1 rem x age or 10 msv x age |
eyelids | 150 msv or 15 rem |
Skin hands feet | 500 msv or 50 rem |
Public annual dose | 1 msv or .1 rem |
publics monthly dose | .5 msv |
Natural /background radiation can be occur spontaniously and can be affected by __________________. | human activity |
constitutes the greatest exposures of human made radiation | Medical and dental x rays |
three things must be present for x ray production | 1. source of electrons 2. force to move them rapidly 3. something to stop this movement rapidly. |
The negative terminal | Cathode |
The positive terminal | Anode |