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Collagen fiber architecture maps: (a) PV at 4 mmHg, (b) AV at 4 mmHg, (c) PV at 4 mmHg, and (d) AV at 90 mmHg. There was a drastic improvement in fiber orientation between 4 and 90 mmHg for the PV and minimal improvement in the fiber orientation between 4 and 90 mmHg for the AV. The overall fiber orientation of the PV and the AV was similar at 90 mmHg.
