GE Vivid 7 User Manual
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Contrast Imaging Vivid7/Vivid7 PRO Users Manual207 FC092326-03 Running RTMC The RTMC Contrast application works only with the M3S and 3S probes. To select RTMC ap- plication without changing the cur- rent probe, press APPL. on the control panel. 1. Press PROBE on the control panel. A list of the connected probes is displayed. 2. Trackball to the desired probe supporting the RTMC application. The Application menu for the selected probe is listed. 3. Trackball to Real Time MC application. 4. Press SELECT to launch the application. 5. Press the assignable ANGIO. 6. Adjust the Active Gain from the Control Panel. 7. Acquire the baseline images. To go back to single screen, press SIMULTANEOUS again. 8. Press STORE to save the baseline acquisition. 9. If desired, press the SIMULTANEOUS assignable to prompt a dual screen for side by side display 2D B-mode and 2D Angio mode. The contrast solu- tion should be pre- pared just before injection.10. Prepare the Contrast agent as described by the manufacturer. 11. Administrate the contrast agent. 12. Press FLASH when the contrast agent has reached a stable level (infusion) or just before peak (bolus injection). The contrast agent is destroyed in the myocardium. 13. Wait approximately ten heartbeats observing contrast wash-in. 14. Press FREEZE. 15. Press CINELOOP. See also page 62 about cineloop oper- ation.16. Select Left marker and Right marker frames to define the cineloop to transfer. Storage of real time data takes consider- able space digitally. Be aware of this when selecting more than one cineloop for storage.17. Press STORE to save the contrast acquisition.
Contrast Imaging 208Vivid7/Vivid7 PRO Users Manual FC092326-03 Optimizing RTMC RTMC is by default scanning in low power mode to avoid destruction of slow moving contrast in the myocardium. This setting is required for real time contrast imaging, but is sub- optimal for tissue imaging. • To obtain good baseline images, the power may be increased prior to contrast injection, but must be reset to its default value before contrast injection or infusion to avoid destruction of the contrast agent. • If the patient is difficult to image, the power may be slightly increased to get sufficient signal from the contrast agent.
Cardiac Measurement and Analysis Vivid7/Vivid7 PRO Users Manual209 FC092326-03 Chapter 6 Cardiac Measurement and Analysis This chapter includes the following information: • Introduction ................................................................................... .. 210 • The Assign and Measure modality .............................................. .. 211 • Starting the Assign and Measure modality ............................... 211 • Entering a study and performing measurements ..................... 213 • Measure and Assign modality ..................................................... .. 215 • Starting the Measure and Assign modality ............................... 215 • Performing measurements ....................................................... 216 • Post-measurement assignment labels ..................................... 227 • Controlling the Measurement result table display ..................... .. 229 • Minimizing the Measurement result table ................................. 229 • Moving the Measurement result table ...................................... 229 • Worksheet ...................................................................................... .. 230 • Overview .................................................................................. 230 • Using Worksheet ...................................................................... 230
Cardiac Measurement and Analysis 210Vivid7/Vivid7 PRO Users Manual FC092326-03 Introduction The Vivid 7/Vivid 7 PRO Ultrasound unit provides functionality for two measurement conventions: A study is a set of related measure- ments, or measure- ments that are logically grouped together. The mea- surements in a study are some- times used in a for- mula to calculate new parameters (e.g. biplane volume with EF, SV and CO).• Assign and Measure (Measure Protocols): the user selects a study consisting in a set of pre-labeled measurements related to the active scanning mode and clinical application. The user is prompted through the measurements in the order of the measurements labels. This convention is started from the MEASURE button on the control panel. A set of tools is implemented to make the measurement process as fast and easy as possible for the user: • The user is guided through the study: an auto-sequence functionality automatically selects the next measurement in a study. • The selected measurement is highlighted in the Measurement menu. • The performed measurement is indicated in the Measurement menu. • The MENU key on the control panel enables quick access to the Measurement menu. The studies and their parameters are user-configurable. The user can create its own studies containing the relevant measurements only (see page 406). • Measure and Assign (Free style): the user performs a measurement and assigns a label. This convention is started either from MEASURE or CALIPER button on the Control panel. CAUTIONOnly assigned measurements will be saved. Measurements without assignment will be lost when scanning is resumed.
Cardiac Measurement and Analysis Vivid7/Vivid7 PRO Users Manual211 FC092326-03 The Assign and Measure modality In this measurement modality, the user selects a study consisting in a set of related pre-labelled measurements. Star ting the Assign and Measure modality 1. Press MEASURE on the control panel. The Measurement Menu is displayed in the Parameters window (see example Figure 6-3). The trackball cursor is in the scanning window, ready for starting measurement. In Freeze mode, the UPDATE MENU key on the trackball area has the same func- tion as the MENU key. 2. For fast access to the Measurement menu, press MENU. The cursor is moved to the Measurement menu. After selection of a measurement the cursor is automatically moved back to the scanning window, ready for measurement. Figure 6-1: Launching the Measurement conventions 1. Menu: fast access to the Measurement menu (when in measure mode) 2. Measure: assign and measure 3. Caliper: measure and assign (see page 215)
Cardiac Measurement and Analysis 212Vivid7/Vivid7 PRO Users Manual FC092326-03 Figure 6-2: Example of a measurement study 1. Active application 2. Study 3. Selected study 4. Opened study 5. Measurements related to the area study for the cardiac application
Cardiac Measurement and Analysis Vivid7/Vivid7 PRO Users Manual213 FC092326-03 Entering a study and perfor ming measurements 1. Press MEASURE on the front panel to enter the Assign and Measure modality. The Measurement menu with a list of studies is displayed in the Parameters window (see example Figure 6-3). When entering the Measurement mode for the first time, the Caliper tool is selected by default. When re-entering the Measurement mode, the first measurement in the actual study that has not been performed is selected by default. To perform a measurement from another study: Alternative: Press MENU to access to the Measurement menu and track- ball to the actual study 1. Trackball to the required study. 2. Press SELECT on the trackball area. The study folder is opened displaying the measurements related to this study. Other related studies may also be available from within the study. 3. Trackball to the measurement to perform. 4. Press SELECT on the trackball area to activate the measurement tool. The cursor is moved back to the scanning window. 5. Perform the measurement. Completed measurements are marked with a check mark Figure 6-3). When the measurement operation is completed the next measurement on the list is automatically selected. To skip a measurement in a study Alternative: Press MENU to access to the Measurement menu and track- ball to the actual study 1. Trackball to the desired measurement 2. Press SELECT to activate the measurement tool.
Cardiac Measurement and Analysis 214Vivid7/Vivid7 PRO Users Manual FC092326-03 Figure 6-3: Display of a performed measurement (example) 1. Performed measurement 2. Next measurement is automatically selected
Cardiac Measurement and Analysis Vivid7/Vivid7 PRO Users Manual215 FC092326-03 Measure and Assign modality In this measurement modality, the user performs a measurement and assign a label. Star ting the Measure and Assign modality Alternative: Press CALIPER on the con- trol panel and select the measurement tool from the as- signables. 1. Press MEASURE on the control panel. The Measurement Menu is displayed in the Parameters window (see example Figure 6-4). 2. If not selected, trackball to the actual measurement tool. 3. Press SELECT on the trackball area to activate the measurement tool. The cursor is moved back to the scanning window, ready for measurement. Figure 6-4: The 2D Mode Measurement tools (Cardiac application) CAUTIONOnly assigned measurements will be saved. 1. Measurement tools
Cardiac Measurement and Analysis 216Vivid7/Vivid7 PRO Users Manual FC092326-03 Perfor ming measurements 2D Measurements 2D Length measurements 1. Generate the 2D image. 2. Press FREEZE to stop the cineloop. Alternative: Press CALIPER on the con- trol panel and press CALIPER assignable. 3. Press MEASURE on the Control Panel. 4. Select Caliper in the Measurement Menu (see Figure 6-2). 5. Trackball the cursor to the start point of the measurement. 6. Press SELECT to anchor the start point of the measurement. See the Status bar to get the next step to perform.7. Trackball the cursor to the measurement end point. The current distance value is displayed in the Measurement result table and is instantaneously updated when moving the cursor. The measurement display color on the 2D image changes from green to red af- ter completion of the measurement.8. Press SELECT to anchor the end point of the measurement. The measurement result is displayed in the Measurement result table. 9. To assign a label to the measurement, see page 227. 10. Repeat steps 5 through 8 to make additional length measurements. The measurements displayed on the 2D image and the cor- responding results are numbered.2D length measurement ratio 1. Generate the 2D image. 2. Press FREEZE to stop the cineloop. 3. Press MEASURE on the Control Panel. Alternative: Press CALIPER and DIST RATIO assignable. 4. Select Dist. ratio in the Measurement Menu (see Figure 6- 2). 5. Perform two length measurements as described in steps 5 through 8 in the above section. The measurement results including the ratio (%) of the two measured lengths are displayed in the Measurement result table. Editing 2D Length measurements 1. Trackball the cursor to one of the anchor points of the measurement to modify. 2. Double-click the SELECT key to select the anchor point. The selected marker turns green and is unanchored. 3. With the Trackball, reposition the marker. 4. Press SELECT to anchor.