GE Logiq P5 User Manual
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Optimizing Spectral Doppler LOGIQ 5 Basic User Manual 5-67 Direction 2300002-100 Rev. 2 Trace Sensitivity DescriptionAdjust the trace to follow the waveform for signal strength. AdjustingPress the left or right arrow key to select value. Va l u e sFrom 0 to 40. BenefitsIf the signal is very faint, changing the Trace Sensitivity will allow the system to lock onto that signal strength. PW/CF Ratio PW/CF RatioThe PW/CF Ratio control adjusts the ratio between Spectral Doppler and Color Flow. AdjustingPress PW/CF Ratio to adjust. Va l u e s1:1, 1:2, and 1:4. Duplex DescriptionDuplex On: simultaneous B-Mode + PW Mode. Duplex Off: toggle live B-Mode + PW Mode via B Pause. AdjustingPress Duplex. Va l u e sOn/Off. BenefitsAllows you to have both B-Mode and PW Doppler Mode active at the same time.
Optimizing the Image 5-68 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Trace Direction DescriptionSpecifies trace direction. AdjustingPress Trace Direction. Va l u e sAbove, Below, or Both. BenefitsYou can select where on the waveform to perform the trace, above, below, or both. Full Timeline DescriptionExpands display to full timeline display. AdjustingPress Full Timeline. Va l u e sOn/Off. BenefitsAllows you to view just the timeline, to see more detail. Display Format DescriptionChanges the horizontal/vertical layout between B-Mode and M- Mode, or timeline only. AdjustingPress Display Format. Va l u e sVertical 1/3, 1/2, or 2/3 B-Mode, Horizontal 1/4 or 1/2 B-Mode, or Timeline Only. BenefitsYou can select how to have your Doppler timeline and anatomy displayed. Time Resolution DescriptionAdjusts image appearance so that if you select a lower setting, the image appears smoother; if you select a higher setting, the image appears sharper. AdjustingPress Time Resolution. Va l u e s1-3 BenefitsTime Resolution = 3 (high) smooths the Timeline; Time Resolution =1 (low) increases the time resolution (image not as smooth).
Optimizing Spectral Doppler LOGIQ 5 Basic User Manual 5-69 Direction 2300002-100 Rev. 2 Modify Auto Calcs DescriptionActivates the menu to select which calculations are automatically calculated. AdjustingPress Modify Auto Calcs to activate Modify Auto Calcs Touch Panel. BenefitsProvides flexibility.
Optimizing the Image 5-70 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Continuous Wave Doppler (CWD) Allows examination of blood flow data all along the Doppler Mode cursor rather than from any specific depth. Gather samples along the entire Doppler beam for rapid scanning of the heart. Range gated CW allows information to be gathered at higher velocities. There are two CW Doppler operating modes: Steerable and Non-Imaging. Steerable Allows viewing of the B-Mode image to position the Doppler cursor to the area of interest while viewing the Doppler spectrum (shown below in the B-Mode image) and listening to the Doppler Audio signal. Works with Sector probes. Figure 5-19. CWD Screen
Optimizing Spectral Doppler LOGIQ 5 Basic User Manual 5-71 Direction 2300002-100 Rev. 2 Non-Imaging Provides only Doppler Spectrum and Audio for ascending/ descending aortic arch, other hard-to-get-to spaces or higher velocities. Requires a single CWD probe and probe adapter. Works with the P2D and P6D probes. Figure 5-20. Non Imaging CWD Screen
Optimizing the Image 5-72 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Activating CW Doppler To activate CW Doppler Mode, press CW. The Doppler spectrum displays along with the B-Mode image. (Steerable CW Doppler, NOT Non-Imaging CW Doppler). The cursor changes to a Doppler cursor. Figure 5-21. CWD Mode Touch Panel, Page 1 Figure 5-22. CWD Mode Touch Panel, Page 2
Optimizing Spectral Doppler LOGIQ 5 Basic User Manual 5-73 Direction 2300002-100 Rev. 2 Exiting CW Doppler CW Doppler Mode, press CW.
Optimizing the Image 5-74 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Using 3D Overview There are two 3D Packages: WARNINGDO NOT scan any pacemaker patient using the sensor device. The magnetic fields emitted from the device may interfere with the pacemaker operation. Table 5-4: 3D Package Options 3D TypeDescription Sensor/No SensorAvailable Ta b s Easy 3D Designed for rendering B Mode images, e.g., Baby Face scans. No sensor 3D Acquisition, Easy 3D, Movie Advanced 3D Designed for rendering B Mode and Color Flow Mode images, e.g., vessel trees. No sensor 3D Acquisition, Easy 3D, Advanced 3D, Movie
Using 3D LOGIQ 5 Basic User Manual 5-75 Direction 2300002-100 Rev. 2 3D Acquisition Acquiring a 3D Scan To acquire a 3D scan, 1. Optimize the B-Mode image. Ensure even gel coverage. 2. Press the 3D control panel key. Two screens appear. NOTE: Set appropriate values for Acq Mode and Scan Plane. Also, set the scan distance before scanning. 3. To start acquiring the image, press ‘L’ (the left split screen key). 4. To perform a parallel scan, scan evenly. To perform a sweep (fan) scan, rock the probe once. Note the distance of the scan. 5. The 3D volume of interest (VOI) is dynamically assembled on the right side of the screen. NOTE: If the image stops before you’re done scanning, start acquiring the 3D volume of interest again. 6. To complete the 3D scan, press ‘R’ (the right split screen key). NOTE: You can also press Freeze, but then you need to also press the 3D key to obtain the final render. 3D Notes Adjust the 3D dataset brightness with B-Mode or Color Flow Mode Gain. Use Colorize to change the color of the active dataset. Use Zoom to increase the zoom factor of the active dataset.
Optimizing the Image 5-76 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Manipulating the Volume of Interest Imagine you are able to manipulate the 3D volume of interest (VOI) in your hand. The 3D VOI is a tangible anatomical object that you can see and manipulate easily using the Trackball and Set control panel keys. Practice positioning the pointer at different places within the 3D VOI. Highlight different colors (white, red, yellow, or green). Press Set to select a VOI for manipulation. Use the hand to manipulate the 3D VOI. Rotating the 3D VOI Left/Right or Forward/BackwardYou can rotate it left to right or right to left. You can rotate it forward/backward. Press right Set key when the white pointer finger is positioned on the white box. Move the closed white hand to manipulate the 3D VOI. Figure 5-23. Manipulating the 3D Volume of Interest (White Hand)