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. Author manuscript; available in PMC: 2018 May 1.
Published in final edited form as: Magn Reson Med. 2016 Jun 14;77(5):2015–2027. doi: 10.1002/mrm.26284

Figure 2.

Figure 2

Illustration of a simulated water molecule random walk through a 3D ensemble of water-permeable red blood cells (RBCs) (oblate ellipsoids). In this 2D projection, the randomly oriented RBCs are semitransparent to allow visualization of overlapping cells. The trajectory of this random walk begins near the (0, 0) origin. The steps that occur inside a RBC are colored green, while those in the extracellular space are colored blue. To calculate transverse 1H2O relaxation time constants, the actual Monte Carlo random walks used a 2744 RBC ensemble. Details are found in the text.