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/TGCFeaturesArchiving, transducers, SRI, compounding, harmonics, 3-D, LOGIQView, Doppler
4 GE ultrasound GE features: Go to: Image optimization: Presets Depth FrequencyAuto-optimizeFocal pointsGain/TGCArchivingTransducersSRICrossXBeamHarmonics3-DLOGIQView% affectedLOGIQ 7LOGIQ 5LOGIQ P5LOGIQ eLOGIQ BookIn 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 qualityUnderstanding just a few of the knobs can accomplish this for most scansL7L5P5LeLB
6 Presets Settings can be saved as presets Viewed in Application or Preset screenDifferent presets for different transducers/structures/patient species/sizesThe more ‘complicated’ machine settings are saved in presets, so these do not need to be adjusted during every scanL7L5P5LeLB
7 DepthAdjust as needed throughout scanL7L5P5LeLBOptimal
8 Frequency Better resolution Less depth Lower frequency High frequencyBetter resolutionLess depthLower frequencyLower resolutionBetter for depthL7L5P5LeLB
9 Auto optimize ‘Personal preference’ button. Adds more contrast…Whites are whiter, blacks are blackerTry on or off. Chose the setting that looks better to you.Auto optimize must be deselected then reselected for every new structure imaged.L7L5P5LeLB
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.L7L5P5LeLB
11 Gain Overall gain Amplification of received signal TGC Time Gain CompensationCompensates for beam attenuation (loss of energy as it passes through tissue)L7L5P5LeLB
12 LOGIQ 7 Frequency Focal points TGC Depth Gain Auto optimize L5 P5 Le (touch screen)LeFrequencyLBFocal pointsTGCDepthGainAutooptimize
13 LOGIQ 5 Frequency Focal points Depth Gain Auto optimize TGC L7 P5 Le LBFocal pointsDepthGainAutooptimizeTGC
14 LOGIQ P5 Focal Frequency points Depth TGC Gain Auto optimize L7 L5 LB LeFocalpointsFrequencyDepthTGCGainAuto optimize
15 LOGIQ e Frequency Focal points TGC Depth Gain Auto optimize L7 L5 P5 LBTGCDepthGainAuto optimize
16 LOGIQ Book Frequency Focal points TGC Depth Auto optimize Gain (toggle)LeTGCDepthAuto optimizeGain
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 printerP3: Save as dicom
18 Archiving Images can be transferred to a CD or USB flash drive. Depending on GE model, media must be formatted firstPress Utilities buttonSelect Connectivity, then removable mediaTo eject media after saving images, press F3Select the media to eject, then finalize
20 SRI Speckle Reduction Imaging: Improved contrast resolution Improved overall claritySmoothes regions where no feature or edges appearMaintains or enhances edges and bordersDoes not eliminate any informationIncreased 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 P5Level is set within the preset (Application) settings
22 Spatial compounding CrossXBeam Interrogates tissue at multiple angles = GE’s spatial compoundingAvailable on the LOGIQ e and LOGIQ P5Interrogates tissue at multiple anglesIntroduces new tissue infoAverages out speckleSRI and CrossXBeam together can have complimentary and additive effectsBorders 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 structuresCrossXBeam OFFCrossXBeam ON
24 CrossXBeam Improved border definition Improved contrast resolution Reduced angle dependenceReduced speckle and noiseIncreased visualization of biopsy needlesCan reduce helpful artifactCan reduce frame rateLOGIQ P5LOGIQ 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 artifactImproved axial and lateral resolutionBetter margin definition and increased contrast
28 Press THI or Harmonics button to turn on Harmonics (THI)Press THI or Harmonics button to turn onPress 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 assessedAppears more ‘life-like’Infinite viewing planesMay approximate CT or MRI imagingScan parallel* or sweep (fan)Angle of imaging less operator dependentLOGIQ P5LOGIQ 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 relationshipsAbility to measure large structuresLOGIQ P5LOGIQ 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: LePress F8 View to turn onPress Left button to start, scan anatomy. Press Right button to stop.
40 Scan in a straight plane or image will ‘bend’ LOGIQViewScan in a straight plane or image will ‘bend’
41 % affected Measure % of tendon affected by the lesion Press Measure buttonSelect % stenosis folderSelect % sten (area)Trace around entire tendonPress setTrace around lesion% affected = %sten