Doppler Modes and M-Mode with Chison Q5: Ultrasound Training Series Part 4
April 29, 2014 by Brian Gill
Color, PW, Power Doppler and M-Mode Imaging, Part 4 of 8 Chison Ultrasound Training Video Series
Part 4 of our Chison Q5 training series addresses the various imaging modes, including all Doppler modes as well as M-Mode. It discusses the various image adjustments, and how to properly use the image mode controls to achieve the best image quality on the Chison Q5 ultrasound machine.
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Links to other parts of this training series are found below the video. For a complete listing of all our free training videos, check out our Ultrasound Equipment Training page.
Go to other parts of the training:
Part 1: Introduction and System tour of the Chison Q5
Part 2: Getting Started with the Q5
Part 3: Chison Q5 Imaging and Image Optimization
Part 4: PW/Color Doppler and M-Mode
Part 5: Annotations, Measurements & Analysis
Part 6: Saving Images, Clips and Cine Review
Part 7: Exam Review, Reports, and Export
Part 8: Utilities, System Settings, Customization, and Presets
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Transcript to Color Doppler, PW Doppler, Power Doppler, M-Mode imaging with the Chison Q5 ultrasound training video
To access our Doppler modes and M-Mode, and other such imaging modes– we’re going to push down the Option to do that. All of these are multi-function controls, where you can push them up, you push them down, and they also work as a gain. So you can increase and decrease gain. Push them down again, change the image size. Push it down again, it goes back to the main.
Pulsed wave Doppler works the same. If I want to get out of that, I can also just click down the B-Mode, and it’ll take me back to the 2D B-Mode imaging.
Let’s start with the M-Mode. To get M-Mode active, we’ll push it down, and we have our M-line. We can adjust that down there. You can optimize this by changing the speed, the map, layout, and adjust the gain here. To return to B-Mode, push it down, and we’re ready to go.
For Color Doppler mode, we’ll push down the C button. Down here, it shows what will happen if we move the trackball. This DV stands for trackball. So if I move it, it says, move region of interest. This box is called the region of interest box. If I want to steer the image, I’ll use the Steer control. If I want to change the size, I’ll it the answer key. And notice here, it says, change ROI. Now I can adjust the size of that color box. And then enter again, and I can reposition it, and I can steer.
To adjust the gain, you’re going to use the C control, just like you would in others. Invert will invert the color. You can use the PRF control here, either by adjusting it here– but it’s also available down here. Now if you noticed, when I went to color flow, these soft menus all change. I have frequency, I have my steering angle– which was similar to using it here, same as using it there.
Our wall filter, color map, flow, pulse repetition frequency, color invert (which is the same as this invert here), persistence, line density, and we can adjust our baseline. Now again, I’ve made a mess of this image by changing all of those. If I want to go back– select the probe, go back to carotid, double click– and I’m back to where I was. If I hit Color, I’m back to the way I wanted it to begin with. Now when I want to go to Power Doppler, I’ll choose CPA, and I’ll get my box. Now, the CPA, power angio, does not give you velocity information. It’s just going to show cellular movement, so this is generally for low flow situations, such as venous– not arterial situations.
This also allows you to select directional Power Doppler. If I click here on the menu, I can scroll down to DPD, and that gives me Directional Power Doppler. So, if I had some low flow going, it would give me information about the direction of the flow of that Power Doppler representation. To go back, I would go back to Power Doppler by twisting the Menu key, and push it down, and I’m back to the Power Doppler image. I could press the CPA key to go back to 2D.
For Pulsed Wave Doppler, I’m going to push the PW button down, and it’ll give me my cursor. Here we have a number of new options on how to optimize that image. But first, I want to change my gate and angle. I’ll use the steer control to adjust the cursor. I’ll use the angle to make an angle correction, by twisting here. By clicking Enter, I can change the size of my gate. Push Enter again, and I’ll change the position. When I want to go into Pulsed Wave Doppler, I’ll hit the update key, and that will give me my Spectral Doppler. If I want to invert the image, I’ll click invert here, or up here. Change my color map, well filter, audio volume, pulse repetition frequency, sweep speed, and adjust my baseline.
Now you can also use Color Doppler and Pulsed Wave mode. First we’ll choose Color, then we’ll go to our Pulsed Wave Doppler, and we would click Update. If you have triplex imaging enabled, you would use this soft menu here– press, and triplex would show up on that menu. You would twist the knob to go there, and press down to activate it. If you do not, it obviously won’t show up there. To get rid of this menu here, choose the Exit key, and it will disappear.