The kidney receives about 25% of the heart's output, and filters enough blood to fill four 2-liter soda bottles per hour! In this high-resolution magnetic resonance image (MRI), glomeruli are shown as white spheres and kidney tubules as colored tracks. Color indicates anatomical direction: red points in the direction of head-to-toe, blue points side-to-side, and green points front-to-back.
The human kidney specimen was obtained from a donated source (www.iiam.org) and was perfused with a contrast agent that enhanced glomeruli. The image was taken using a technique called structure tensor imaging from high-resolution MRI (117 μm isotropic). The length of the kidney is ~10 cm.
Luke Xie PhD, Vivian S. Lee MD PhD MBA, Utah Center for Advanced Imaging Research, Radiology, University of Utah, Edwin Baldelomar PhD, Kevin M. Bennett PhD, Dept. of Biology, University of Hawaii at Manoa, Scott C. Beeman PhD, Radiology, Washington University