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. Author manuscript; available in PMC: 2013 Jun 26.
Published in final edited form as: IEEE Trans Med Imaging. 2010 Sep 27;30(2):391–400. doi: 10.1109/TMI.2010.2080282

Fig. 1.

Fig. 1

Stepping through threshold values shows the shape of the input signal to the leading edge discriminator. Lowering the threshold causes the negative pulse to trigger the comparator at a later time.