منابع مشابه
Brain parenchyma penetration by intrathecal ionic and nonionic contrast media.
Metrizamide, a nonionic water-soluble contrast medium, has been shown to penetrate normal brain when injected intrathecally. Recently it was suggested that the complications following intrathecal metrizamide are directly related to the cerebral concentration reached. Metrizamide, both in experimental animals and clinically, is regarded as less neurotoxic than equivalent iodine concentrations of...
متن کاملBronchial vasodilatory response to ionic and nonionic contrast media.
It has recently been shown that bronchial arterial injection of conventional contrast medium causes a significant increase in bronchial blood flow (Qbr) and that this response is partially attenuated after infusion of N omega-nitro-L-arginine (L-NNA). However, the precise mechanism for this increase in Qbr is unknown. In this study we examined the effect of bronchial arterial injection of conve...
متن کاملIonic versus nonionic paramagnetic contrast media in differentiating between postoperative scar and recurrent disk.
BACKGROUND AND PURPOSE In theory, ionic solutes diffuse more slowly in cartilage than do nonionic solutes. We tested the hypothesis that the contrast ratio between scar and recurrent disk fragment on MR images is greater after IV administration of an ionic rather than a nonionic contrast medium when a clinical dose is used. METHODS Twenty patients who had recurrent lumbar disk herniation were...
متن کاملIonic versus nonionic paramagnetic contrast media in differentiating between scar and herniated disk.
PURPOSE To compare the MR contrast enhancement produced by ionic and nonionic paramagnetic contrast media in herniated disk fragments with that in epidural scar tissue. METHODS A recurrent herniated disk was modeled in canines by using laminectomy to place a fragment of disk cartilage in the epidural space. The dogs were studied 88 and 90 days after laminectomy with MR imaging enhanced with a...
متن کاملIn Viva Effects of Nonionic and Ionic Contrast Media on Tkromboglobulin and Fibrinopeptide Levels
Nottlonk contrasi media are suggested to cause ittcreawl tbrom. boetttbolbnt (in viva?), platelet aggr@ion and promagulant o&t (in vitro) I( campared with tonic mttmt medta. To study these e8ect.s in viva, 30 Ntmecutive palientr undergoing muline *a&g. nphy ware pmspectively mdamired to Lm gmupr of 10 priientr ead~. Group A mrivcd diatrizoate (i&c, high wnc4al. Ityh Grwp B ioxagbite $mic, low o...
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ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 1996
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.167.5.8911157