Mamourian A C, Briggs R W
Radiology. 1986 Feb;158(2):457-60. doi: 10.1148/radiology.158.2.3753624.
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.
在两名疑似脊髓异常且在脊髓造影后接受磁共振（MR）检查的患者中，发现碘苯酯既是一种放射造影剂，也是一种磁共振造影剂。在重复时间为500毫秒、回波时间为30毫秒获得的MR图像上，碘苯酯在椎管的下垂部分呈现为一条高信号强度的线性带。对两只狗进行的MR成像——一只在颈蛛网膜下腔注射碘苯酯，另一只注射阿米培克——证实高信号源自碘苯酯。这种高信号强度是由于碘苯酯的T1弛豫时间短。尽管碘苯酯可能不会被用作MR造影剂，但认识到这一特性很重要，这样其高信号在MR图像上就不会被误认为是蛛网膜下腔的脂肪或出血。
