Organisation of the Body
Help!
|
|
||||
|---|---|---|---|---|---|
| show | Point Of Care Ultrasound
Used in emergency medicine to rule in/rule out
Used in procedural guidance, diagnostics e.g. cardiovascular, respiratory, obstetrical, gastrointestinal and vascular as well as in monitoring
🗑
|
||||
| show | Transducer made of several piezoelectric elements that produce sound waves in response to electric current
Frequency of 2-20 MHz
🗑
|
||||
| Acoustic impedance | show 🗑
|
||||
| Direct piezoelectric effect | show 🗑
|
||||
| Image resolution | show 🗑
|
||||
| Focal zone | show 🗑
|
||||
| Axial resolution | show 🗑
|
||||
| show | Differentiating between object perpendicular to the ultrasound beam
Focal zone
Decreases with depth due to scattering and divergence of the beam
🗑
|
||||
| show | The ability to resolve objects within the height or thickness of the beam
Dependent on the number of PE crystals and their sensitivity
🗑
|
||||
| Anechoic | show 🗑
|
||||
| Hypoechoic | show 🗑
|
||||
| Isoechoic | show 🗑
|
||||
| Hyperechoic | show 🗑
|
||||
| Homogenous | show 🗑
|
||||
| Heterogenous | show 🗑
|
||||
| What are colour dopplers used for | show 🗑
|
||||
| Doppler shift principle | show 🗑
|
||||
| What can increase doppler shift | show 🗑
|
||||
| show | No doppler beam is perpendicular
It must be parallel to direction of flow
45-60 degrees is sufficient
🗑
|
||||
| show | Higher frequency - 5-18 MHz
Depth - less than 5cm
Uses - vascular, MSK, thyroid and breast imaging
🗑
|
||||
| show | Lower frequency - 2-9 MHz
Uses - abdominal, cardiac and obstetric imaging
Provides a wider field of view at deeper depths
🗑
|
||||
| Phased-array probes | 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:
12345678987654321000000
Popular Medical sets