Samsung SONOACE X6 Bedienungsanleitung PDF herunterladen (Seite 24)

5 - 24 SONOACE X6 Operation manual

Measurement items for Doppler Spectrum are as follows:

Item

Type Unit Equation

PSV (Peak Systolic Velocity) Velocity cm/s or m/s

EDV (End Diastolic Velocity) Velocity

cm/s or m/s

TAMV (Time Average Mean Velocity) Velocity

cm/s or m/s

TAPV (Time Average Peak Velocity) Velocity

cm/s or m/s

PGmean (Mean Pressure Gradient) Calculation None

Pgmax (Max Pressure Gradient), Calculation None 4 × PSV

S/D (Ratio of PSV to EDV) Calculation Ratio (PSV / EDV)

D/S (Ratio of EDV to PSV) Calculation Ratio EDV /PSV

RI (Resistivity Index) Calculation Ratio (PSV – EDV) / PSV

PI (Pulsatility Index) Calculation Ratio (PSV – EDV) / Vmean

▐ Volume Flow Measurement

Select Volume Flow in the Measurement menu.

Volume Flow allows you to measure and calculate an area or distance. For information on

distance or area measurements, please refer to “Basic Measurements.” The TAMV (Time

Avg. Mean Velocity) value is automatically measured.

 Vesl. Area (Vessel Area)

Measure the area of a blood vessel and calculate TAMV and Volume Flow.

60)( ××= TAMVAreaAVolumeFlow

 Vesl. Dist. (Vessel Distance)

Measure the width of a blood vessel and calculate TAMV and Volume Flow.

)(

××

= TAMV

DVolumeFlow

▐ Stenosis Measurement

You can measure the stenosis of each blood vessel system by measuring and calculating

an area or distance.

 % StA (Stenosis Area)

Measure the area of the inner and outer walls of a blood vessel.

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Samsung SONOACE X6 Bedienungsanleitung Seite 24