Asus LU700 Series Manual page 53

Step 5: Switch to CF mode (Optional)
Functions in SCAN (LIVE)
Mode selection:
1.
Touch B, the system would be selected for B mode which means a two-dimensional ultrasound
image display composed of bright dots representing the ultrasound echoes.
2.
Touch CF (Optional), the system would be selected for CF mode, the velocity and direction of
blood flows are depicted in a color map superimposed on the 2-D image. Color flow is showed in
ROI. Its size and location are adjustable.
3.
Touch M, the system would be selected for M mode, a diagnostic ultrasound presentation of the
temporal changes in echoes in which the depth of echo-producing interfaces is displayed along
one axis and time is displayed along the second axis, recording motion of the interfaces toward
and away from the transducer.
4.
Touch PW to enter PW mode sample gate positioning (Optional). Select the gate position and
adjust gate size, gate angle and image gain base on CF mode.
5.
Touch PW Enter (Optional), the system would be selected for PW (Pulsed wave) Doppler mode, it
is moving objects change the characteristic of sound waves. By sending short and quick pulses of
sound, it becomes possible to accurately measure the velocity of blood in a precise location and
in real time.
6.
Touch PD (Optional), the system would be selected for PD (Power Doppler) mode, it is used to
obtain images that are difficult or impossible to obtain using standard color Doppler and to
provide greater detail of blood flow, especially in vessels that are located inside organs.
Parameter Turning:
7.
Depth: The depth of penetration is related to the frequency of the ultrasound wave. Higher
frequencies have a shorter depth of penetration. Lower frequencies have a longer depth of
penetration.
8.
THI: (Tissue harmonic imaging). It is a signal processing technique also termed native harmonic
imaging. It provides special focusing methods to gather ultrasonic waves to get the focus that
meets the requirements.
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