Why 3D NerveVIEW is highly appreciated at NFMC
According to Tanji, methods such as ProSet FFE, STIR or 3D VISTA are anatomically nonselective because background signals, for instance from blood vessels, often interfere with nerves, which hampers evaluation of details, especially at the peripheral side of the nerves.
“The intra-luminal signal of veins, especially around the intervertebral space, can be suppressed well with NerveVIEW. As a result, we can easily observe the detailed nerve structure around the posterior ganglion,” he says. “This is why we use 3D NerveVIEW for intraforaminal stenosis and extraforaminal stenosis/herniation (lateral disc herniation). On the other hand, if herniation is suspected to exist inside the dorsal root ganglion (DRG), balanced TFE or ProSet-FFE is applied. NerveVIEW is not suitable for evaluating the median type of herniation.”
The SE-EPI DWI-based method for MR neurography works well for large FOV exams like whole-body MRI, but focal examination of nerves is often limited by the attainable spatial resolution (both inplane and slice direction) and geometric distortion. “3D NerveVIEW achieves higher in-plane resolution – close to our other routine spine sequences – and the source images can be used instead of adding a fat-suppressed T2-weighted sequence,” Tanji says.