Phantom no: 544, THI til B-K, Lavfrekvent

Date: 2000 October 26. Time: 22:1
Slice thickness: 5.00 cm +/-0.02cm
Temperature: 21.3 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,    -1.270,            1544.8,       0.4
 4.0,    -1.270,            1544.8,       0.4
 5.0,    -1.280,            1545.3,       0.4
 6.0,    -1.280,            1545.3,       0.4
 7.0,    -1.290,            1545.8,       0.4
 8.0,    -1.410,            1551.5,       0.4
 9.0,    -1.400,            1551.0,       0.4
10.0,    -1.290,            1545.8,       0.4
Mean velocity:   1546.8 m/sec
Calculated velocity at 23°C : 1552 m/sec

Measurement of attenuation:
Sampling frequency: 100.00 Ms/sec +/-0.01%
Density:         1055.0 Kg/m3
Impedance:       1.632 * 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
  2.98,    63.45,   2.98,   54.69,   8.75     1.747,    0.587,     0.026
  4.00,    65.03,   4.00,   53.40,  11.63     2.323,    0.580,     0.019
  4.98,    70.93,   4.98,   56.81,  14.13     2.822,    0.567,     0.015
  6.01,    70.79,   6.01,   54.05,  16.74     3.344,    0.557,     0.013
  6.98,    73.40,   6.98,   54.82,  18.58     3.712,    0.532,     0.011
  8.01,    74.30,   8.01,   53.02,  21.27     4.251,    0.531,     0.010
  8.98,    74.50,   8.98,   51.27,  23.23     4.643,    0.517,     0.009
 10.01,    73.29,  10.01,   48.46,  24.83     4.962,    0.496,     0.008
 10.99,    73.53,  10.99,   46.76,  26.77     5.350,    0.487,     0.007
 12.01,    70.18,  12.01,   40.59,  29.59     5.915,    0.492,     0.007
 12.99,    71.29,  12.99,   39.97,  31.32     6.260,    0.482,     0.006
 14.01,    70.37,  14.01,   36.62,  33.74     6.745,    0.481,     0.006