GE Vivid 7 User Manual
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Basic scanning operations Vivid7/Vivid7 PRO Users Manual87 FC092326-03 4. Using the trackball, adjust the probe marker orientation and press SELECT. Editing a bodymark 1. Press the alphanumeric key BODYMARK (F6). The Bodymark menu is displayed 2. Press Edit. 3. Using the trackball, adjust the position of the probe marker and press SELECT. 4. Using the trackball, adjust the probe marker orientation and press SELECT. Deleting a bodymark 1. Press the alphanumeric key BODYMARK (F6). The Bodymark menu is displayed 2. Press Delete.
Basic scanning operations 88Vivid7/Vivid7 PRO Users Manual FC092326-03
Scanning Modes Vivid7/Vivid7 PRO Users Manual89 FC092326-03 Chapter 3 Scanning Modes • 2D-Mode ......................................................................................... .... 92 • 2D-Mode overview ..................................................................... 92 • 2D-Mode controls ....................................................................... 94 • Using 2D .................................................................................... 97 • Optimizing 2D ............................................................................. 97 • M-Mode .......................................................................................... .... 98 • M-Mode overview ....................................................................... 98 • M-Mode controls ...................................................................... 100 • Using M-Mode .......................................................................... 102 • Optimizing M-Mode .................................................................. 103 • Color Mode .................................................................................... .. 104 • Color 2D Mode overview .......................................................... 104 • Color Mode controls ................................................................. 107 • Using Color Mode .................................................................... 110 • Optimizing Color Mode ............................................................. 111 • PW and CW Doppler ..................................................................... .. 112 • PW and CW Doppler overview ................................................. 112 • PW and CW Doppler controls .................................................. 114 • Using PW/CW Doppler modes ................................................. 117 • Optimizing PW/CW Doppler modes ......................................... 117 • Tissue Velocity Imaging (TVI) ...................................................... .. 119 • TVI overview ............................................................................ 119 • TVI controls .............................................................................. 121 • Using TVI ................................................................................. 124 • Optimizing TVI .......................................................................... 124 • Tissue Tracking ............................................................................. .. 125 • Tissue Tracking overview ......................................................... 125
Scanning Modes 90Vivid7/Vivid7 PRO Users Manual FC092326-03 • Tissue Tracking controls ........................................................... 127 • Using Tissue Tracking .............................................................. 129 • Optimizing Tissue Tracking ...................................................... 129 • Strain rate ...................................................................................... ... 130 • Strain rate overview .................................................................. 130 • Strain rate controls .................................................................... 132 • Using Strain rate ....................................................................... 135 • Optimizing Strain rate ............................................................... 135 • Strain ............................................................................................. ... 136 • Strain overview ......................................................................... 136 • Strain controls ........................................................................... 138 • Using Strain .............................................................................. 141 • Optimizing Strain ...................................................................... 141 • Tissue Synchronization Imaging (TSI) ....................................... ... 142 • TSI overview ............................................................................. 142 • TSI controls ............................................................................... 144 • Using TSI .................................................................................. 146 • Optimizing TSI .......................................................................... 146
Scanning Modes Vivid7/Vivid7 PRO Users Manual91 FC092326-03 Introduction The Vivid 7/Vivid 7 PRO ultrasound scanner provides several basic scanning modes and several options for combining the use of these modes. The following scanning modes are described in this chapter: • 2D Mode Imaging • M-Mode Imaging • Anatomical M-Mode (straight and curved) • Color Mode Imaging • Angio • Doppler Mode Imaging • Tissue Velocity Imaging See page 271 for further information on image and cineloop storage. Refer to page 381 for more informa- tion on VCR re- cording.When performing an examination using any of these modes, images and image sequences (cineloops) can be stored. The examination or part of it can also be stored on video tape.
Scanning Modes 92Vivid7/Vivid7 PRO Users Manual FC092326-03 2D-Mode 2D-Mode over view Figure 3-1: The 2D screen (cardiac) 1. Focus marker 2. Probe orientation marker 3. Status window: 4. Soft menu Controls marked with R are also available in freeze and cine replay.
Scanning Modes Vivid7/Vivid7 PRO Users Manual93 FC092326-03 Figure 3-2: The 2D controls on the front panel The 2D mode displays a two-dimensional gray scale image of the tissue within the probes field of view. 2D mode can be combined with: In combined mode, press ACT. MODE to toggle between modes and access to the mode specific controls. • M-Mode, see ’M-Mode’ on page 98 • Color Mode, see ’Color Mode’ on page 104 • CW or PW Doppler Mode, see ’PW and CW Doppler’ on page 112 • Color and Doppler Modes (triplex) 1. Assignable keys: • Width • Frequency/Resolution • Focus • Frame rate • Up/Down R • Left/Right R • Cineloop (in Freeze, only) • Dual focus • B color maps • Select all 2. Zoom 3. Depth 4. Soft menu • Compress R • Reject R • Dynamic Range • Tilt • Contour • Diff On/Off • DDP R • Power • Start/stop cineloop 5. Freeze 6. 2D 7. Gain Controls marked with R are also available in freeze and cine replay 5 1 2 4 6 3 7
Scanning Modes 94Vivid7/Vivid7 PRO Users Manual FC092326-03 2D-Mode controls 2D assignable controls Width Controls the size or angular width of the 2D image sector. A smaller angle generally produces an image with a higher frame rate. Focus Changes the location of the focal point(s). A triangular focus marker indicates the depth of the focal point. Frame rate Adjusts frame rate (FPS). Rotate the knob clockwise to increase frame rate. The relative setting of the frame rate is displayed in the status window. When adjusting frame rate, there is a trade off between spatial and temporal resolution. Frequency/Resolution On some low fre- quencies, the sys- tem switches automatically to second-harmonic mode. The word “Octave” appears in the status win- dow.Enables the adjustment of the probes operating frequency. Rotate the knob clockwise to increase the frequency. The selected frequency is displayed in the status window. For some probes/applications the lowest frequency settings will be Octave imaging settings. Invert • Left/Right Invert: enables a mirror image of the 2D image to be created. The left/right reference marker V moves to the other side of the image. • Up/Down Invert: enables the 2D image to be flipped 180 degrees. Dual focus Activates Dual focus mode. To adjust the Dual focus, rotate the FOCUS assignable. Color maps Displays a color map menu to optimize the greyscale presentation. The menu enables an option from a list of non- linear gray-curves or different 2D-colorized curves to be selected.
Scanning Modes Vivid7/Vivid7 PRO Users Manual95 FC092326-03 Cineloop (in Freeze only) Starts cineloop acquisition. Gain When rotated clockwise, increases the overall gain applied to the received echo signals equally for all depth. Time Gain Compensation (TGC) compensates for depth-related attenuation in an image. The sliders nearest the operator affect the far field. TGC amplifies returning signals to correct for the attenuation caused by tissue at increasing depths. Depth Sets the maximum (far field) distance that will be imaged. Decreasing the depth may allow higher frame rates. 2D Soft menu controls Compress Controls the amount of contrast in the 2D image. An index number is displayed in the status window to indicate the relative level of compression. Contour Controls image processing related to the extent of edge enhancement applied to an image. Reject Adjust reject level. When this control is increased, low-level echoes are rejected and appear darker in the 2D image. An index number is displayed in the status window to indicate the relative level of rejection. Tilt Enables the axis of the 2D image to be tilted to the left or right. By using this control in combination with angle control the image can be “aligned” to the direction of interest, and frame rates be optimized. By default the axis of symmetry of a 2D image is vertical.
Scanning Modes 96Vivid7/Vivid7 PRO Users Manual FC092326-03 DDP (Data Dependent Processing) Performs temporal processing which reduces random noise without affecting the motion of significant tissue structures. An index number is displayed in the status window (under Proc) to indicate the relative DDP level. Diff On/Off Affects the level of reverberations in the image. When turned on, the frame rate (or the number of focal zones) will decrease, while the reverberations will be attenuated. Power When power is re- duced, it reduces the signal-to-noise ratio, so that the im- age may become noisier.Controls the amount of acoustic power applied in all modes. When power is set to maximum, it is equal to or less than the maximum acoustic power permitted by the FDA. The Thermal Index (TI) and the Mechanical Index (MI) are displayed on the screen. Dynamic Range Enables control of the dynamic range or contrast of the image. When dynamic range is set high, the image is softer and more low-level data is visible.