GE Logiq P5 User Manual

							Optimizing M-Mode
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M-Mode Display
 Figure 5-4. M-Mode Display
M-Mode Display
Description, Format, Values
(For Future Vadliation)
M-Mode Gain
Depth Scale  
IndicatorDisplays Overall M-Mode Gain as ##dB. 
Image depth, in cm.
Time Scale Eight speeds: 16, 12, 8, 6, 4, 3, 2, 1. Major marker = 1 second. 
M-Mode Cursor Displays where the M-Mode Cursor is positioned.  
						

							Optimizing the Image
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M-Mode Touch Panel
 Figure 5-5. M-Mode Touch Panel
Scanning Hints
HINTSThese M-Mode controls produce the following results: 
Edge Enhance. Affects border sharpness. 
Sweep Speed. Controls speed of M-Mode update. 
Dynamic Range. Affects the amount of gray scale information 
displayed.  
						

							Optimizing M-Mode
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M/D Cursor
DescriptionDisplays the M-Mode cursor on the B-Mode image. 
AdjustingTo activate/deactivate the M-Mode cursor, press M/D Cursor. 
Trackball to position M-Mode cursor. 
Va l u e sOn/Off.
BenefitsLets you position the cursor before you go into M-Mode so that 
you can make optimum use of the larger B-Mode image. 
B Pause
DescriptionToggles between simultaneous and update presentation while 
viewing Spectral Doppler. 
AdjustingTo activate, press B Pause to toggle between simultaneous and 
update. The M-Mode trace does not restart each time the image 
is updated; however, a black bar may appear. 
Va l u e sOn/Off. 
BenefitsUpdate increases the Spectral Doppler display quality. 
BioeffectsActivating Update may change the TI and/or MI. Observe the 
output display for possible effects. 
						

							Optimizing the Image
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Sweep Speed
DescriptionChanges the speed at which the timeline is swept. Available in 
M-Mode, M Color Flow Mode, and Doppler Mode. 
AdjustingTo increase/decrease, select Sweep Speed. 
Va l u e sM-Mode: 16, 12, 8, 6, 4, 3, 2, and 1 second  sweeps across the 
display. Doppler Mode: 12, 8, 6, 5, 4, 3, 2, and 1 second 
sweeps. Values vary by probe and application. 
Sweep Speed values are returned to the factory or user preset 
value when you change the following: Probe, Exam Category, 
Exam Calcs, or New Patient. 
BenefitsYou can speed up or slow down the timeline to see more or 
fewer occurrences over time. 
BioeffectsChanging the Sweep Speed may change the TI and/or MI. 
Observe the output display for possible effects. 
						

							Optimizing M-Mode
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Anatomical M-Mode
DescriptionAnatomical M-Mode gives you the ability to manipulate the 
cursor at different angles and positions. The M-Mode display 
changes according to a motion of the M cursor.
 Figure 5-6. Anatomical M Mode
ActivatingTo activate Anatomical M-Mode, press the Anatomical M Touch 
Panel control.   
						

							Optimizing the Image
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Anatomical M-Mode (continued)
AdjustingUse the Touch Panel control and Trackball to position the 
M cursor over the required area of the B-Mode image.
•  Turn the Touch Panel control left or right to move the M 
cursor to the desired area. 
•  Move the Trackball left/right to move the cursor line left/right.
•  Move the Trackball up/down to move the M cursor up/down.
Va l u e sOn/Off. 
BenefitsColor Flow Mode and Color M-Mode are Doppler Modes 
intended to add color-coded qualitative information concerning 
the relative velocity and direction of fluid motion within the B-
Mode or M-Mode image. 
BioeffectsChanging the Sweep Speed, Packet Size, Frame Rate/
Resolution, Zoom, PRF, and ROI size may change the TI and/or 
MI. Observe the output display for possible effects.  
						

							Optimizing M Color Flow
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Optimizing M Color Flow
M Color Flow Mode
DescriptionM Color Flow is used for fetal cardiac applications. Color Flow 
overlays color on the M-Mode image using velocity and variance 
color maps. The Color Flow wedge overlays the B-Mode image 
and M-Mode timeline.
The Color Flow maps available in M-Mode are the same as in 
Color Flow Mode. The size and position of the Color Flow 
window in B-Mode determines the size and position of the Color 
Flow window in M-Mode. 
All M-Mode measurements are available with M Color Flow 
active: depth, distance along a straight line, % stenosis, volume, 
trace, circumference, enclosed area, distance, time, slope, and 
heart rate. 
ActivatingTo activate M Color Flow Mode, press M (M-Mode). Then press 
CF (Color Flow) - or - press CF, then press M. 
To toggle between M Color Flow controls and Color Flow 
controls, press the appropriate Touch Panel Mode tab. 
Va l u e sOn/Off. 
BenefitsColor Flow Mode and Color M-Mode are Doppler Modes 
intended to add color-coded qualitative information concerning 
the relative velocity and direction of fluid motion within the B-
Mode or M-Mode image.  
						

							Optimizing the Image
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M Color Flow Mode (continued)
BioeffectsChanging the Sweep Speed, Packet Size, Frame Rate/
Resolution, Zoom, PRF, and ROI size may change the TI and/or 
MI. Observe the output display for possible effects. 
 Figure 5-7. M Color Flow, Page 1
 Figure 5-8. M Color Flow, Page 2 
						

							Optimizing Color Flow
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Optimizing Color Flow
Intended Use
Color Flow Mode is a Doppler Mode intended to add color-
coded qualitative information concerning the relative velocity 
and direction of fluid motion within the B-Mode image.
Introduction
A typical examination using Color Flow Mode, 
1.  Follow the same procedure as described under B-Mode to 
locate the anatomical area of interest. 
2.  After optimizing the B-Mode image, add Color Flow. 
3.  Move the color flow area of interest as close to the center of 
the image as possible. 
4.  Optimize the color flow parameters so that a high frame rate 
can be achieved and appropriate flow velocities are 
visualized. 
5. Press Freeze to hold the image in memory. 
6.  Record color flow images as necessary. 
7.  If more definitive information is needed about flow, utilize the 
procedures described under Doppler Mode. 
						

							Optimizing the Image
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Activating Color Flow
To activate Color Flow Mode, 
1. Press CF (Color Flow). The CF window appears over the B-
Mode image. Move the Trackball to move the CF window.
 Figure 5-9. Color Flow Mode Display
Uses
Color Flow is useful to see flow in a broad area. Color Flow 
allows visualization of flow in the whole image, whereas Doppler 
Mode provides spectral information in a smaller area. 
Color Flow is also sometimes used as a stepping stone to 
Doppler. You use Color Flow to locate flow and vessels prior to 
activating Doppler. 
Exiting Color Flow
To exit Color Flow, press CF.