Phantom no: 533, model 525

Date: 2000 February 24. Time: 16:17

Slice thickness: 3.01 cm +/-0.02cm

Temperature: 23.0 degree Celsius +/-0.1øC

Sound speed measurement

Sampling frequency: 1000.00 Ms/sec +/-0.01%

frequency, time differens, sound speed, +/- 2*SD

MHz microseconds m/sec m/sec

3.0, -0.660, 1541.5, 0.5

4.0, -0.670, 1542.3, 0.5

5.0, -0.670, 1542.3, 0.5

6.0, -0.670, 1542.3, 0.5

7.0, -0.680, 1543.1, 0.5

8.0, -0.680, 1543.1, 0.5

9.0, -0.670, 1542.3, 0.5

10.0, -0.680, 1543.1, 0.5

Mean velocity: 1542.5 m/sec

Calculated velocity at 23øC : 1543 m/sec

Measurement of attenuation:

Sampling frequency: 100.00 Ms/sec +/-0.01%

Density: 1055.0 Kg/m3

Impedance: 1.627 * 10E6 Kg/m2*sec

Reflection loss: -0.02 dB

trans.frq.,energy,rec.frq.,energy,transm.loss,att/dist,att/dist*frq,+/-2*SD

MHz dB MHz dB dB dB/cm dB/cm*MHz dB/cm*MHz

3.08, 67.94, 3.08, 63.06, 4.88 1.616, 0.525, 0.032

4.15, 72.31, 4.15, 65.67, 6.63 2.199, 0.530, 0.024

5.13, 72.59, 5.13, 64.20, 8.39 2.780, 0.542, 0.020

6.15, 68.30, 6.10, 58.17, 10.13 3.361, 0.546, 0.017

7.13, 62.84, 7.13, 51.80, 11.05 3.664, 0.514, 0.015

8.01, 57.75, 8.01, 45.92, 11.84 3.928, 0.490, 0.013

8.98, 50.67, 8.98, 37.19, 13.47 4.471, 0.498, 0.012

9.96, 44.90, 10.01, 29.20, 15.70 5.210, 0.523, 0.012