Samsung HS50 Manual do Utilizador Página 64

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 282
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 63
7-36
User Manual
CAUTION: The measurements carried out by Auto Trace under Measure and Real Time Automatic
Doppler Trace (Automatic Calculator) may be different from each other. This is because the
algorithms for these two methods are different. It is recommended that you use Auto Trace under
Measure for more accurate measurement.
Tips!
Things to Consider when using Real Time Automatic Doppler Trace
1. Aliasing occurs because PRF is too low in comparison to the image speed, or the spectrum is
clustered around the baseline because PRF is too high.
2. Peak is indistinctive or intermittent such as in Spectral waveforms for veins.
3. Meaningful spectrum distinction becomes difficult because Doppler Gain is set too high or too
low.
4. An index is displayed during the transition time after Sample Volume is moved with the
trackball.
5. The major spectral signals are cut off because Doppler Wall Filter is set too high.
6. Peak Trace is interrupted due to abnormal Doppler noise or artifact, and the heart rate is above
approximately 140 bpm.
If any of the above apply, Real Time Automatic Doppler Trace may not produce an accurate trace or
results. In addition, during auto calculation, results will not be displayed if the Freeze function is run
against inaccurate values.
Threshold
Specify the minimum range of Threshold. It can be adjusted between 0 and 10 by using the
touch screen button.
Tips!
Threshold
Threshold is a function to adjust Trace Line in the Auto Trace or Limited Trace. Increase the value to
capture a wider area, use a smaller value to make the waveform clearer.
Trace Method
Tap Trace Method on the touch screen. Max or Mean Trace for the selected spectrum is
performed. It will not be performed if set to O.
Trace Direction
Tap Trace Direction on the touch screen. Select the part of the spectrum to calculate with
AutoCalc from Both, Above, or Below.
Vista de página 63
1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 281 282

Comentários a estes Manuais

OSCAR 23 Apr 2025 | 08:21:36

h