Biplane is available in the following Cardiac presets: Standard and Coherence. Compared to linear presets, the
Biplane mode has the following differences:
1. To adjust the position of the perpendicular plane, touch and drag the white dot around the apex of the
longitudinal (bottom) plane. move the white dot within the reference plane you can drag it with respect to
the longitudinal (reference or bottom) plane, the perpendicular plane will rotate around the apex (top side of the
polar image) of the reference plane
2. Both planes are fixed, inversion is disabled, and the orientation is optimized for the parasternal long-axis
two-dimensional imaging based on the American Society of Echocardiography (ASE) guidelines
2
.
6.6. Using Fetal Heart Sounds
Fetal heart sounds is a mode that allows the user and the patient to hear the sound of the fetus's heart and
simultaneously displays the pulsed wave spectrum. Fetal heart sounds is available in the OB 2/3 preset.
When using Fetal Heart Sounds, you can:
• View and adjust the position of the sample volume by holding and dragging the gate.
• Listen to the sound of the fetus’s heart when audio is enabled.
• Switch between live audio playing and live B-mode by touching the Start Audio/Update B-mode button.
• Adjust volume of the fetus's heart sound and the gain of spectral trace by dragging finger left and right on the
trace while trace is live.
• Adjust the Scale to optimize for high or low flow by touching the Low Flow/High Flow control in the middle of the
screen. Note that the control defines your current state.
• Adjust the Scroll Speed of the Fetal Heart Sounds trace by touching the Slow Scroll/Fast Scroll control in the
middle of the screen. Note that the control defines your current state.
In order to adjust the Gain and Depth of the B-mode reference image, exit Fetal Heart Sounds and optimize the
image in the B-Mode.
Placing the Sample Volume
1. Hold and drag the sample volume gate (the square region along the Doppler line) to the desired location within
the fetus’s heart.
2. Once positioned, Tap “Start Audio” to start both the fetal heart sound and the spectral trace. If you do not see a
trace or hear a sound, adjust the position of the sample volume.
3. To adjust the position of the sample volume:
a. Hold and drag the sample volume gate, which will automatically pause the spectrum and restart B-mode
reference image.
b. Tap the Update B-mode button to manually pause spectrum and restart B-mode.
4. To adjust scroll speed of trace, tap the “Slow Scroll/Fast Scroll” button.
5. To adjust the velocity scale, tap the button Low Flow/High Flow button or drag baseline.
6. To add annotations, freeze the image and tap the annotations button.
7. To add measurements, freeze the image and select linear measurements.
NOTE
Annotations and measurements may only be added to the Spectral trace region.
2
ASE Guidelines.
Using Fetal Heart Sounds
Using Modes 36
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