CenSSIS: Acoustics Group at Boston University Data Formats

This page provides information on the data formats of the acoustic measurements. The data are stored as .mat Matlab data files. The data is available from the CenSSIS database:
http://censsis-db1.ece.neu.edu/

XYZ Scan

Acoustic data measured either in pulse-echo (mono-static) or through-transmission mode (bi-static). The transducer or target may be scanned in full three-dimensional spatial scan. The resulting dataset contains four-dimensional information about the acoustic field.

xyzreadme.txt Brief description of the data and the format of the matlab files.

Filenames are of the form:
mbYYMMDDsXX
mb=medbed
YY=2 digit year data was taken
MM=2 digit motnh datat was taken
DD=2 digit day data was ataken
XX=unique number identifier for datat set taken on the specified day

Some older data may be in the following two-dimensional format. This will not be supported for data from 2003 onwards.
XY Scan
Data measured in from a carrying out pulse-echo acoustic measurements by scanning a transducer in a two-dimensional x-y raster pattern over an object. The resulting dataset contains three-dimensional information about the object.
xyreadme.txt Brief description of the data and the format of the matlab files.
plotxyscan.m An example m file for displaying the data from and xy datafile. It plots a single RF waveform and two orthogonal B-scans.

IVUS Scan

Data measured from a rotating Intravsascular Ultrasound (IVUS) transducer. The data is described in detail at www.bu.edu/paclab/censsis/ivus.

ivusreadme.txt Brief description of the data and the format of the matlab files.

plotivus.m An example m file for loading the IVUS data and displaying it. Remove the "return;" to use the envelope from the Hilbert transform to create the B-scan image.