Radiology, Vol 158, 457-460, Copyright © 1986 by Radiological Society of North America
Appearance of Pantopaque on MR images
AC Mamourian and RW Briggs
Pantopaque was shown to be both a radiographic and magnetic resonance (MR)
contrast agent in two patients with suspected cord abnormalities who
underwent MR examination following myelography. The Pantopaque appeared as
a linear band of high signal intensity along the dependent portion of the
spinal canal on MR images obtained with a repetition time of 500 msec and
an echo time of 30 msec. MR images of two dogs-- one injected with
Pantopaque in the cervical subarachnoid space and the other with
Amipaque--confirmed that the high signal arose from the Pantopaque. This
high signal intensity is due to Pantopaque's short T1 relaxation time.
Although Pantopaque will probably not be used as an MR contrast agent, it
is important to recognize this property so that its high signal is not
mistaken for fat or hemorrhage in the subarachnoid space on MR images.
