From: UE Aero on
Dear Rune,
Here is the short description of what A-, B-, and C-Scan means:
A-, B-, C-, Scan usually refers to the method of representing an
ultrasound signals.

A-scan displays the amount of received ultrasonic energy as a function
of time. Relative amount of received energy is plotted along the
vertical axis and the elapsed time is displayed along the horizontal
axis.

B-scan displays a profile (cross-sectional) view of the test specimen
which is being inspected. Time-of-flight (travel time) of the sound
energy is displayed along the vertical axis and the linear position of
the transducer is displayed along the horizontal axis.

C-scan provides a plan-type view of the location and size of test
specimen features. Relative signal amplitude is displayed as a shade
of gray or a color for each of the positions where data was recorded.
It usually provides an image of the features that reflect and scatter
the sound within and on the surfaces of the test piece.

I believe this must make a sense to you now. I have a lot of A-scan
signal data for a test specimen in excel. I need to construct an image
from it. How do I do it? Please help me!!!

Thanks,

Anish