heart.dt 			       "data file name
image_heart.dt			       "sample image file
64                                     "number of channels
17.76                                  "A/D sampling rate
3.333                                  "transducer center frequency
0                                      "block offset (in Kbytes)
10.0   				       "time offset (in usec)
4096                                   "number of samples per record
2				       "number of bytes per sample
1				       "signal average
0.24                                   "element space in mm
1.54				       "sound velocity in mm/usec