1. Ultrasound machine knobology
Copyright © 2010 Academy of Veterinary Imaging

2. Ultrasound machine knobology… In other words, what the heck do all of those knobs and buttons do, and how can adjusting them affect image quality?!?!

3. GE ultrasound Image optimization Features
Presets, depth, frequency, auto-optimize, focal points, gain/TGC
Features
Archiving, transducers, SRI, compounding, harmonics, 3-D, LOGIQView, Doppler

4. GE ultrasound GE features: Go to: Image optimization: Presets Depth
Frequency
Auto-optimize
Focal points
Gain/TGC
Archiving
Transducers
SRI
CrossXBeam
Harmonics
3-D
LOGIQView
% affected
LOGIQ 7
LOGIQ 5
LOGIQ P5
LOGIQ e
LOGIQ Book
In this presentation, click on the Home button as pictured here to return to this page

5. Image optimization Image quality is comprised of many things
During an ultrasound exam, the ultrasound machine settings should be changed as needed to optimize image quality
Understanding just a few of the knobs can accomplish this for most scans L7 L5 P5 Le LB

6. Presets Settings can be saved as presets
Viewed in Application or Preset screen
Different presets for different transducers/structures/patient species/sizes
The more ‘complicated’ machine settings are saved in presets, so these do not need to be adjusted during every scan L7 L5 P5 Le LB

7. Depth
Adjust as needed throughout scan L7 L5 P5 Le LB
Optimal

8. Frequency Better resolution Less depth Lower frequency
High frequency
Better resolution
Less depth
Lower frequency
Lower resolution
Better for depth L7 L5 P5 Le LB

9. Auto optimize ‘Personal preference’ button.
Adds more contrast…Whites are whiter, blacks are blacker
Try on or off. Chose the setting that looks better to you.
Auto optimize must be deselected then reselected for every new structure imaged. L7 L5 P5 Le LB

10. Focal points Place focal points at the region of interest.
Improved resolution is seen where the focal points are.
Place focal points at the region of interest. L7 L5 P5 Le LB

11. Gain Overall gain Amplification of received signal TGC
Time Gain Compensation
Compensates for beam attenuation (loss of energy as it passes through tissue) L7 L5 P5 Le LB

12. LOGIQ 7 Frequency Focal points TGC Depth Gain Auto optimize L5 P5 Le
(touch screen) Le
Frequency LB
Focal points
TGC
Depth
Gain
Auto
optimize

13. LOGIQ 5 Frequency Focal points Depth Gain Auto optimize TGC L7 P5 LeLB
Focal points
Depth
Gain
Auto
optimize
TGC

14. LOGIQ P5 Focal Frequency points Depth TGC Gain Auto optimize L7 L5 LBLe
Focal
points
Frequency
Depth
TGC
Gain
Auto optimize

15. LOGIQ e Frequency Focal points TGC Depth Gain Auto optimize L7 L5 P5LB
TGC
Depth
Gain
Auto optimize

16. LOGIQ Book Frequency Focal points TGC Depth Auto optimize Gain
(toggle) Le
TGC
Depth
Auto optimize
Gain

17. Archiving ‘P’ buttons can be programmed Default settings:
P1: Saves as raw dicom clip or still image (image appearance, M-mode, 3-D can be done on a raw dicom clip, but it is a very large file, thus too large to send)
P2: Print on the thermal printer
P3: Save as dicom

18. Archiving Images can be transferred to a CD or USB flash drive.
Depending on GE model, media must be formatted first
Press Utilities button
Select Connectivity, then removable media
To eject media after saving images, press F3
Select the media to eject, then finalize

19. Some GE transducers 8C
12L
Rectal
i739 4C 3S

20. SRI Speckle Reduction Imaging: Improved contrast resolution
Improved overall clarity
Smoothes regions where no feature or edges appear
Maintains or enhances edges and borders
Does not eliminate any information
Increased Signal-to-Noise ratio

21. SRI Always is on in the LOGIQ e
Can adjust to have different levels in the LOGIQ 7 and LOGIQ P5
Level is set within the preset (Application) settings

22. Spatial compounding CrossXBeam Interrogates tissue at multiple angles
= GE’s spatial compounding
Available on the LOGIQ e and LOGIQ P5
Interrogates tissue at multiple angles
Introduces new tissue info
Averages out speckle
SRI and CrossXBeam together can have complimentary and additive effects
Borders are similar for each steering angle, noise and speckle position change for each frame; successive frames average out noise and smooth borders

23. CrossXBeam Perpendicular angle of insonation generates higher signal
Images generated with compounding have more angles that are perpendicular to structures
CrossXBeam OFF
CrossXBeam ON

24. CrossXBeam Improved border definition Improved contrast resolution
Reduced angle dependence
Reduced speckle and noise
Increased visualization of biopsy needles
Can reduce helpful artifact
Can reduce frame rate
LOGIQ P5
LOGIQ e

25. CrossXBeam: P5 Press X Beam to turn on
Press L and R buttons simultaneously to see side-by-side display of CrossXBeam on and CrossXBeam off

26. CrossXBeam: Le F9 or ‘Comp’ to turn on
Press L and R buttons simultaneously to see side-by-side display of CrossXBeam on and CrossXBeam off

27. Harmonics (THI)
Display is from echos of a frequency different from the transmitted frequency (i.e. 2x transmitted frequency)
Reduced artifact
Improved axial and lateral resolution
Better margin definition and increased contrast

28. Press THI or Harmonics button to turn on
Harmonics (THI)
Press THI or Harmonics button to turn on
Press L and R buttons simultaneously to see side-by-side display of harmonics on and harmonics off

29. 3-D Volume imaging Appears more ‘life-like’ Infinite viewing planes
Volume vs. area affected can be assessed
Appears more ‘life-like’
Infinite viewing planes
May approximate CT or MRI imaging
Scan parallel* or sweep (fan)
Angle of imaging less operator dependent
LOGIQ P5
LOGIQ e

30. 3-D: P5 Press 3D to turn on Click arrow to go to images
Press Left button to start. Scan anatomy. Press Right button to stop.

31. 3-D: Le Press F7 to turn on Click arrow to go to images
Press Left button to start. Scan anatomy. Press Right button to stop.

32. Use set button to alternate hand and rotate tools
Drag image to corner

33. Use set button to alternate hand and rotate tools
Rotate image

34. Use set button to alternate hand and rotate tools
Slice through

35. Use set button to alternate hand and rotate tools
Rotate again

36. 3-D Use set button to alternate hand and rotate tools
Slice through another plane

37. LOGIQView Extended field of view
Better demonstration of anatomical relationships
Ability to measure large structures
LOGIQ P5
LOGIQ e

38. LOGIQView: P5 Press LOGIQ View to turn on
Press Left button to start, scan anatomy. Press Right button to stop.

39. Press Left button to start, scan anatomy. Press Right button to stop.
LOGIQView: Le
Press F8 View to turn on
Press Left button to start, scan anatomy. Press Right button to stop.

40. Scan in a straight plane or image will ‘bend’
LOGIQView
Scan in a straight plane or image will ‘bend’

41. % affected Measure % of tendon affected by the lesion
Press Measure button
Select % stenosis folder
Select % sten (area)
Trace around entire tendon
Press set
Trace around lesion
% affected = %sten