Phantom no: 539

Date: 2000 April 8. Time: 22:6
Slice thickness: 3.01 cm +/-0.02cm
Temperature: 24.2 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,    -0.670,            1545.8,       0.5
 4.0,    -0.670,            1545.8,       0.5
 5.0,    -0.680,            1546.6,       0.5
 6.0,    -0.680,            1546.6,       0.5
 7.0,    -0.680,            1546.6,       0.5
 8.0,    -0.680,            1546.6,       0.5
 9.0,    -0.680,            1546.6,       0.5
10.0,    -0.680,            1546.6,       0.5
Mean velocity:   1546.4 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:       1.631 * 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
  3.08,    62.10,   3.08,   57.35,   4.75     1.573,    0.511,     0.032
  4.10,    65.72,   4.15,   59.44,   6.28     2.082,    0.508,     0.024
  5.13,    66.72,   5.13,   58.96,   7.76     2.573,    0.502,     0.020
  6.15,    67.88,   6.10,   58.59,   9.29     3.082,    0.501,     0.017
  7.08,    69.13,   7.08,   58.57,  10.56     3.504,    0.495,     0.015
  8.06,    69.79,   8.06,   57.90,  11.89     3.944,    0.490,     0.013
  8.98,    71.76,   8.98,   58.63,  13.13     4.357,    0.485,     0.012
  9.91,    71.22,   9.91,   56.39,  14.84     4.923,    0.497,     0.012
 10.89,    73.70,  10.89,   57.46,  16.24     5.391,    0.495,     0.011
 11.87,    72.16,  11.77,   54.41,  17.75     5.893,    0.497,     0.010
 12.84,    74.88,  12.79,   55.97,  18.92     6.280,    0.489,     0.010
 13.82,    75.39,  13.72,   54.73,  20.66     6.859,    0.496,     0.010