Physiological basis of muscle functional MRI.

  title={Physiological basis of muscle functional MRI.},
  author={Bruce M. Damon and Elizabeth A Louie and O. Nelson Andres Sanchez},
  journal={Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology},
  volume={14 1},
Muscle functional magnetic resonance imaging (MRI) refers to changes in the contrast properties of certain MR images that occur in exercising muscles. In part, these changes result indirectly from increased rates of cellular energy metabolism, which alter the image contrast properties by increasing the water content and by decreasing the intracellular pH. Also, increases in blood oxygen extraction cause a rapidly evolving, small, and negative contribution to signal. Together, these changes… CONTINUE READING