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I do not believe that the method section is correct. Transcranial Doppler uses a single probe (A mode) and not a linear array (B Mode)

Many TCD devices use M mode to display several velocities along the vessel but this is not the same as Motion mode used in regular ultrasonography.

http://en.wikipedia.org/wiki/Medical_ultrasonography refers

208.69.225.32 ( talk) 15:42, 2 February 2010 (UTC) reply

As I know, current TCD use B mode 2D imaging, and after the blood vessels are found, the velocity of blood circulation can be measured with pulse dopler and will give velocity graphic from time to time. Gsarwa ( talk) 06:41, 2 April 2015 (UTC) reply