Review
Help!
|
|
||||
|---|---|---|---|---|---|
| show | For every 1" OID, an increase of 7" in SID is required.
🗑
|
||||
| show | Density = log x incident light intensity/transmitted light intensity
🗑
|
||||
| What are the GCF for the following Grid ratios........No grid, 5:1 grid, 6:1 grid, 8:1 grid, 12:1 grid, 16:1 grid? | show 🗑
|
||||
| What formula is used when converting from one grid ratio to another? | show 🗑
|
||||
| In digital imaging, how is pixel size determined? | show 🗑
|
||||
| How can the size of a particular structure or image can be calculated? | show 🗑
|
||||
| show | SOD = SID - OID
🗑
|
||||
| show | MF = Image Size/Object Size
🗑
|
||||
| show | HU = mA x Sec x kV. 3 phase 6 pulse 1.35 (35%) & 3 phase 12 pulse 1.41 (41%).
🗑
|
||||
| show | Vs/Vp = Ns/Np (V=voltage & N=number of turns). to determine current...Ns/Np=Ip/Is (N=number of turns & I=current).
🗑
|
||||
| show | GR = H/D (GR = Grid Ratio, H = Height of Pb stip, D = Distance of the interspace material between the Pb strips).
🗑
|
||||
| What is the Grid Frequency? | show 🗑
|
||||
| What are the mAs correction factors when changing from single phase to 3 phase 6 pulse & 3 phase 12 pulse? | show 🗑
|
||||
| show | screen spped 50=4, 100=2, 200=1, 400=0.5 & 800=0.25.
🗑
|
||||
| show | For each 1cm increase of tissue thickness an increase of 2 kVp to compensate.
🗑
|
||||
| What is the 15% rule? How will I apply it, if repeating & wanting to keep the same the density? | show 🗑
|
||||
| What is the formula used to determine the amount of image magnification? | show 🗑
|
||||
| How can the SID be determined with the OID & SOD? How can the SOD be determined with the SID & OID? How can the OID be determined with the SID & SOD? | show 🗑
|
||||
| What is the formula to calculate Equivalent Dose? | show 🗑
|
||||
| show | The Collective Effective Dose describes low doses of ionizing radiation exposure of a population or a group. The person-seivert. The # of people x the average effective dose.
🗑
|
||||
| What are the annual occupation limits for Effective Dose? How many mSv are in each rem? What are the limits in mSv? What is the occupational yearly dose limit for students under 18 years of age? | show 🗑
|
||||
| show | 5 mSv (.5 rem) for the gestational period & not to exceed .5 mSv per month (.005 rem, or 5 mrem).
🗑
|
||||
| show | Yes. Overdevelopment can be caused by the developer temp being too high, which results in chemical fog.
🗑
|
||||
| Which of the following is likely to result from using single emulsion film in an IR that has 2 intensifying screens.....Double exposure, Decreased density, Increased recorded detail, Greater latitude? Why is this? | show 🗑
|
||||
| How does an decrease in kV affect exposure latitude? What does this mean? | show 🗑
|
||||
| show | Dx x-ray & gamma rays 1, protons 5, fast neutrons 10, alpha particles 20.
🗑
|
||||
| What is the inverse square law? | show 🗑
|
||||
| show | Old Intensity/New Intensity = Old Distance squared/New Distance squared
🗑
|
||||
| show | EfD = D x Wr x Wt. (D) dose,(Wr) radiation weighting factor, (Wt) tissue weighting factor
🗑
|
||||
| show 🗑
|
|||||
| show 🗑
|
|||||
| show 🗑
|
|||||
| show |
🗑
|
||||
| show |
🗑
|
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:
jamestkelley
Popular Radiology sets