Phantom no: 543, THI HF, background

Date: 2000 October 2. Time: 18:50
Slice thickness: 3.01 cm +/-0.02cm
Temperature: 23.7 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,    -0.690,            1546.0,       0.5
 4.0,    -0.690,            1546.0,       0.5
 5.0,    -0.690,            1546.0,       0.5
 6.0,    -0.690,            1546.0,       0.5
 7.0,    -0.700,            1546.8,       0.5
 8.0,    -0.700,            1546.8,       0.5
 9.0,    -0.700,            1546.8,       0.5
10.0,    -0.700,            1546.8,       0.5
Mean velocity:   1546.4 m/sec
Calculated velocity at 23°C : 1545 m/sec

Measurement of attenuation:
Sampling frequency: 100.00 Ms/sec +/-0.01%
Density:         1055.0 Kg/m3
Impedance:       1.631 * 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,    64.25,   2.98,   58.53,   5.72     1.895,    0.636,     0.035
  4.00,    66.01,   4.00,   58.56,   7.46     2.471,    0.617,     0.026
  4.98,    70.11,   4.98,   61.04,   9.07     3.007,    0.604,     0.022
  6.01,    70.89,   6.01,   60.87,  10.02     3.323,    0.553,     0.018
  6.98,    72.26,   6.98,   60.31,  11.95     3.965,    0.568,     0.016
  8.01,    73.36,   8.01,   59.91,  13.45     4.463,    0.557,     0.014
  8.98,    73.66,   8.98,   59.04,  14.62     4.850,    0.540,     0.013
 10.01,    72.24,  10.01,   56.11,  16.12     5.351,    0.535,     0.012
 10.99,    72.34,  10.99,   55.37,  16.97     5.632,    0.513,     0.011
 12.01,    68.87,  12.01,   50.61,  18.26     6.060,    0.504,     0.010
 12.99,    69.13,  12.99,   49.49,  19.64     6.519,    0.502,     0.010
 14.01,    67.89,  14.01,   46.47,  21.42     7.111,    0.507,     0.010