Notecards to Study
Help!
|
|
||||
|---|---|---|---|---|---|
| Matter | anything that occupies space
🗑
|
||||
| Mass | is the quantity of matter contained
in any physical object
🗑
|
||||
| kilogram | s the scientific unit of
mass
– “kilo” stands for “1000”
– A “kilogram” (kg) is equal to 1000 grams
🗑
|
||||
| Weight | describes the mass of an object
in a gravitational field
🗑
|
||||
| Energy | ability to do work
🗑
|
||||
| The joule | the unit of work
🗑
|
||||
| Potential energy | ability to do work due
to position
🗑
|
||||
| Kinetic energy | energy of motion
🗑
|
||||
| Chemical energy | energy released by a chemical reaction
🗑
|
||||
| Electrical energy | work that can be done when an electron or
electronic charge moves through an electric
potential
🗑
|
||||
| Thermal energy (heat) | energy of motion at the molecular level (kinetic
energy of molecules)
🗑
|
||||
| Nuclear energy | energy contained in the nucleus of an atom
🗑
|
||||
| Electromagnetic energy | energy resulting from electric and magnetic
disturbances in space
🗑
|
||||
| radiation | Energy emitted through space is called
🗑
|
||||
| exposed or irradiated | Matter that intercepts radiation and absorbs
part or all of it
🗑
|
||||
| Ionizing radiation | any kind of radiation
capable of removing an orbital electron from
the atom with which it interacts
🗑
|
||||
| ionization | occurs when an x-ray passes close
enough to an atom to transfer sufficient energy to
the electron to cause it to escape from its atom
🗑
|
||||
| ion pair | The orbital electron and the atom from which it
was separated
🗑
|
||||
| 2 main Sources of Ionizing Radiation | – Naturally environmental radiation
– Man-made radiation
🗑
|
||||
| Natural environmental radiation consist of 3 components | – Cosmic rays
– Terrestrial radiation
– Internally deposited radionuclides
🗑
|
||||
| Discovery of x-rays | 1895
🗑
|
||||
| Thomas Edison develops fluoroscope | 1898
🗑
|
||||
| Collimation and filtration developed | 1899
🗑
|
||||
| Snook transformer developed offering more controlled voltage and current production | 1907
🗑
|
||||
| Coolidge hot filament x-ray tube developed to replace cold filament Crookes tube. Used with the Snook transformer it gave greater accuracy in use of the voltage and current so specific techniques could be used for each body part | 1913
🗑
|
||||
| ASRT (first professional organization) developed | 1920
🗑
|
||||
| First grid to removed scattered radiation | 1921
🗑
|
||||
| First automatic processor | 1942
🗑
|
||||
| Image intensifier tube developed for fluoroscopy screens | 1948
🗑
|
||||
| Tomography developed | 1951
🗑
|
||||
| Ultrasound | 1966
🗑
|
||||
| PET and CT | 1970s
🗑
|
||||
| MRI | 80s
🗑
|
||||
| CR, DR | 2000s
🗑
|
||||
| Clarence Dally, Thomas Edison’s assistant, had to have both his arms amputated and died in | 1904
🗑
|
||||
| ALARA | As Low As Reasonably Achievable
🗑
|
||||
|
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Created by:
speedybee43
Popular Radiology sets