SWGTC-R/T-Chapter 10-Wallace-Methods to Control Scatter
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| more matter= more _________ | scatter
🗑
|
||||
| true/false> the x-ray beam should never be larger than the size of the film | true
🗑
|
||||
| a change in collimation size affect both ________and ________. | density and contrast
🗑
|
||||
| true/false> a filter absorbs low energy photons from the x-ray beam and reduces patient radiation dose. | true
🗑
|
||||
| filtration has an affect on both _______ and ______as it has an effect on the quantity and quality of the x-ray beam. | contrast and density
🗑
|
||||
| filtration <decreases/increases> density and contrast | decreases
🗑
|
||||
| What are the two types of filtration? | inherent and added
🗑
|
||||
| this type of filtration is part of the tube and can not be eliminated. hat is it and how does it work. | inherent. the window of the tube acts to filter some of the photons from the beam.
🗑
|
||||
| this type of filter is placed under the window between the tube and the collimator. what is it and hat is it usually made of? | added filtration, made of metal, usually aluminum
🗑
|
||||
| true/false>by law, added filtration is now included in every x-ray tube and is not removable. | true
🗑
|
||||
| 2 shapes of compensatory filters placed in a track under the collimator | wedge and trough
🗑
|
||||
| The wedge filter has a thick end and a thin end. The smaller part of the patient should be placed under the ________end. | thick
🗑
|
||||
| What is the purpose of the wedge filter? | used to give uniform density when the body part being examined is thicker on one end than the other.
🗑
|
||||
| this type of compensatory filter is thicker on its edges and thin in the middle. | trough
🗑
|
||||
| What are the best method to control scatter? | grids and collimator
🗑
|
||||
| What is contained in the back of a cassette? | lead
🗑
|
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:
kristinalyn
Popular Radiology sets