6 - 42 Operator’s Manual
6 Image Acquisition
6.14.5 Basic Operations of TTQA
Switch among the operation controls
• [Start Tracking]: tap to start tracking.
• [Accept & Compute]: tap to start calculation and display the curve.
• [Exit]: tap to exit tissue tracking.
• [Parameter]: rotate to select the curve type.
• [Bull’s Eye]: touch to turn on/off bull’s eye and peak data table.
• [Auto Play]: change the speed of the play.
View Selection
Before tracing, touch the corresponding keys to select for the view.
• [A4C]: apical four chamber.
• [A2C]: apical two chamber.
• [ALAX]: apical long-axis view, also called 3-chamber view.
• [PSAXB]: short axis view of base section, short axis view of mitral valve.
• [PSAXM]: short axis view of base section, short axis view of papillary muscle.
• [PSAXAP]: short axis view of apex.
Parameter Adjustment
• [Thickness]: adjusts the tracing thickness, i.e., the distance between the endocardium wall and
the tracking points on the epicardium.
• [Track Point]: adjusts the number of points within the segment.
• [Cycle]: select the next cycle.
• [Display Effect]: turns on/off the arrow vector graphical display of the myocardial movement.
• [Velocity Scale]: adjust the scale length of the velocity.
• [Display Style]: display the endometrial, the epicardium, the myocardial or all.
• [Tracking Cycles]: select the cycles to be tracked.
• [Average Cycles]: obtain the average parameter curves of the tissue.
• [Cycle Select]: select among different cycles.
Time Mark
According to the status of the current section, tap the corresponding key on the touch screen to
check the matching time.
• [AVO]: displays aortic valve open time.
• [AVC]: displays aortic valve closure time.
• [MVO]: displays mitral valve open time.
• [MVC]: displays mitral valve closure time.
Curve Display
Select [Parameter], the system provides different curves of different segments for observation.
• General
– Speed curve: The X-axis represents time (s); the Y-axis represents velocity (cm/s).
– Displacement curve: The X-axis represents time (s); the Y-axis represents displacement
(cm).
• Long axis section
To Next Page
Loading...
