Ultrasound RF Data Set geabr_2

RF Data Format Description
The ultrasound RF data in this data set was collected using a complete set synthetic aperture focusing technique (SAFT). The firing sequence is described below (assuming a N element array):

  Record number:
     1  2  3  4 ... N   N+1  N+2 ...   N^2   
  Transmit element number:
     1  1  1  1 ... 1   2    2   ...   N
  Receive element number:
     1  2  3  4 ... 1   2    3   ...   N

Data Files
The data files associated with this data set are:

• geabr_2.dat.gz : RF data file (Compressed using gzip)
• geabr_2.prm : Parameter file
  This file contains characteristcs about the RF data
  e.g., A/D sampling rate, transducer center frequency
• geabr_2.img : Sample image (raw format)
  This is a sample reconstructed image from the data set. It is a 512x512 pixel image in raw binary format, i.e. 1 byte per pixel (256 grayscale levels) with no formatting or colormap.
• geabr_2.gif : Sample image (GIF format)
  This is the same image as in the .img file, but in GIF format.
  Please note that these images have no gamma correction in their colormap. Also these are the same images that can be seen by clicking on the small image icons. They are best viewed with an external viewer (e.g., xv) since some browsers (e.g., Netscape) dither the images and thus reduce image quality.