AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Aug 1997
Comparative StudySingle-dose gadolinium with magnetization transfer versus triple-dose gadolinium in the MR detection of multiple sclerosis lesions.
To compare the efficacy of single-dose gadolinium with magnetization transfer contrast (MTC) with that of triple-dose gadolinium in detecting enhancing multiple sclerosis lesions. ⋯ Triple-dose gadolinium is more effective (higher sensitivity and interobserver agreement) than single-dose gadolinium in combination with MTC in detecting enhancing multiple sclerosis lesions.
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AJNR Am J Neuroradiol · Aug 1997
Comparative StudyThrombogenicity of hydrophilic and nonhydrophilic microcatheters and guiding catheters.
To assess in a swine model the in vivo thrombogenicity of various microcatheters and guiding catheters as a function of catheter material, catheter coating, and duration of implantation. ⋯ Hydrophilic microcatheters and guiding catheters are less thrombogenic than their nonhydrophilic counterparts, but not all hydrophilic coatings are equally hypothrombogenic. Degree of thrombogenicity depends on catheter material rather than surface morphology. Medium-term implantation did not yield increasing thrombus formation relative to short-term implantation.
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AJNR Am J Neuroradiol · Aug 1997
Functional MR activation correlated with intraoperative cortical mapping.
To evaluate the spatial specificity of functional MR imaging by comparing it with intraoperative electrocortical mapping. ⋯ For the tasks used in this study, the activation site on functional MR images correlated well with the site at which intraoperative stimulation identified function.