Direct imaging of nerves aid diagnosis
The key concept in MR neurography, Dr. Yabuki stresses, is the ability to directly visualize spinal nerves, versus inferring the presence of pathology indirectly. “Before NerveVIEW, we estimated compression of the nerve by looking for the presence or absence of fat signal on other MR images,” he says.
“For example, in sagittal images, when the presence of fat is observed in the intervertebral foramen, it suggests that there is a margin around the nerve. Similarly, the absence of fat indicates that the nerve is being compressed. So, we used to deduce nerve compression indirectly. With NerveVIEW, however, we can observe the condition of the nerves directly, regardless of the presence or absence of fat. We always prefer such direct observation of anatomy over having to make an inference about it.”