Performing an Exam
T3300 Diagnostic Ultrasound System | 72 | B00601-010 4/10/17
6.10.3.4 Semi-Trace
Trace the Doppler spectrum with better accuracy in the measurement calculation.
1. Touch Semi Trace. A crosshair cursor with vertical axis appears on the time series window.
Drag the cursor to a desired peak of the graph and release it.
2. A second cursor appears. Drag it along the waveform to end diastole on the graph then release
it.
3. A third cursor appears. Drag it to the second peak of the graph and release it
4. Touch anywhere on the imaging area to complete the trace.
To obtain an accurate auto-trace and measurement result, a high-quality Spectral Doppler image
with clean noise background is required.
6.10.3.5 2-Points Measurement
Used to perform a set of basic Spectral Doppler measurements which may include peak systolic
velocity, end diastole velocity, mean velocity, time, slope, pulsatility index, resistive index, systolic/
diastolic ratio, pressure half-time and maximum pressure gradient, depending on the transducer
connected and the application selected.
1. Touch 2 pt. Meas. A crosshair cursor with vertical axis appears on the time series window. Drag
the cursor to a desired peak of the graph and release it.
2. A second cursor appears. Drag it to end diastole on the graph and release it. The measured
results (values) appear on the screen.
For measurement accuracy and precision in PW Doppler measurement:
Velocity measurement will be less than ±12%.
6.11 Saving and Printing the Image
After adding annotations/measurements to the image, you can save or print the image.
6.11.1 Saving an Image Loop
On the real-time imaging screen, touch Save to save a default set of frames as an image loop. The
saved image loop will be displayed in the thumbnail list.
6.11.2 Saving an Image
On the frozen imaging screen, touch Save to save the current frame as an image. The saved image
will be displayed in the thumbnail list.
6.11.3 Printing an Image
On the frozen imaging screen, touch Print to print out the current image.
6.12 Reviewing the Image
On the frozen imaging screen, flick vertically on the thumbnail list to view the thumbnails of all the
saved images/loops.