Safety
Nuclear power plants, camping lanterns, smoke detectors, and x-rays....
What are types of man made radiation?
This is an example of a compound filter
What is a Thoraeus Filter?
A cloud of electrons that forms when thermionic emission occurs is called a (an):
Thermionic cloud
Decreases
These 2 types of TARGET interactions can produce diagnostic range x-ray photons
What are Characteristic and Bremsstrahlung
Maximize distance maximize shielding, and minimize time
What are the cardinal principles of radiation protection?
This is the PURPOSE of using Filtration
What is to protect the patient?
Standard x-ray tubes normally rotate at this speed.
What is 3,200 to 3,600?
The anode heel effect is more noticeable with short or long distance?
Short distance
Exposure will ________ when kVp is decreased
What is decrease?
50 mSv or 5,000 mrem
Filtration____________ the intensity and ___________the average energy of the x-ray beam.
These are the 2 reasons why tungsten is the material of choice for the filament?
1. High Melting point
2. difficult to vaporize
Due to the anode heel effect, the cathode side of the tube should be placed over the thicker or thinner part of the anatomy?
What is thicker?
When electrons accelerate across the x-ray tube, they interact within ________to________ mm of the surface of the target.
What is .25 to .50 mm
The largest source of Natural Radiation
What is Radon?
This is a filter made of more than one material
What is a compound filter?
We do this to reduce a patient's radiation dose and reduce the amount of scatter produced.
What is beam restriction (collimation)?
This is the percentage of difference in x-ray intensity between the cathode and the anode side of the x-ray beam
What is 45%
What is the atomic number of tungsten?
74
The minimum required total filtration of a 70 kVp beam
What is 2.5 mm AL/EQ?
The sum of inherent and added filtration
What is total filtration?
When the x-ray tube target angle is less than ________ degrees, the effective focal spot is smaller than the actual focal spot.
What is 45 degrees?
Why is tungsten the material of choice for the anode? 3 reasons
1. High atomic number
2. High Melting point
3. Good heat conducting ability
In the x-ray tube, most x-rays are produced by which interaction?
Bremsstrahlung