Figure 1From: Respiratory effects on phase contrast imaging of the jugular veinExample calculation of respiratory position widths for 2-position reconstruction (a). The respiratory waveform is broken into equal levels and projections are binned according to their position. Flow analysis shows increased magnitude flow during the “inspiration” plateau (position 2) versus position 1 (b). Time-averaged reconstruction gives flow roughly midway between position 1 and position 2.Back to article page