Samsung MySono U5 Manual do Utilizador descarregar pdf (Página 42)

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Operation Manual

Color and Power Controls

■

Color Sensitivity

Raising color sensitivity will increase TI and more time will be spent on scanning the color image.

Color pulses become the dominant pulse type in this mode.

■

Color Sector Width

Narrowing the color sector width will raise the color frame rate and increase TI. The system will

automatically reduce the pulservoltage and maintain it below the system maximum level. Reducing

the pulser voltage will decrease MI. If Pulsed Doppler is running as well, Pulsed Doppler will remain

as the dominant mode and TI change will be minimal.

■

Color Sector Depth

If the color sector depth becomes greaterer, the system will automatically reduce the color frame

rate or choose a new color focal zone or color pulse length. Such a combination of eects causes

TI to change. In general, when color sector depth increases, TI will decrease. MI will respond to the

maximum intensity of the dominant pulse type, which is the color pulse. However, if Pulsed Doppler

is running as well, Pulsed Doppler will remain as the dominant mode and TI change will be minimal.

■

Scale

Increasing the range of color velocity by using the scale control can result in increase of TI. The

system will make automatic adjustments to keep the pulser voltage below the system maximum

level. Decreasing the pulser voltage also decreases MI.

■

Sec Width

Decreasing the 2D mode sector width in color imaging will increase the color frame rate. TI will

increase and MI will remain unchanged. If Pulsed Doppler is running as well, Pulsed Doppler will

remain as the dominant mode and TI change will be minimal.

M mode and Doppler Controls

■

Speed

M mode and Doppler sweep speed adjustments will not aect the MI. When M mode sweep speed

changes, TI changes.

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Samsung MySono U5 Manual do Utilizador Página 42