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. Author manuscript; available in PMC: 2013 Jul 23.
Published in final edited form as: Int J Cardiovasc Imaging. 2011 Feb 17;27(2):251–258. doi: 10.1007/s10554-011-9798-1

Figure 1. OCT scanning schemes.

Figure 1

The left panel shows a typical A-scan collected from a sample. The middle panel depicts a typical B-scan of a coronary vessel where the catheter has been rotated, thus scanning a cross-section of the vessel. The data is transformed into polar coordinates to accurately portray the circular structure of the vessel. The right panel illustrates volumetric imaging of a coronary vessel. To achieve 3-D imaging the catheter is pulled back as it is rotating tracing out a helical pattern.