AJNR. American journal of neuroradiology
-
AJNR Am J Neuroradiol · Mar 1998
Case ReportsIsolated cortical venous thrombosis and ulcerative colitis.
Aseptic cortical venous thrombosis is rare without concomitant dural sinus thrombosis. Ulcerative colitis is associated with both dural sinus thrombosis and isolated cortical venous thrombosis. ⋯ An overlying thrombosed cortical vein was identified on spin-echo MR images and confirmed with angiography. Signal characteristics of thrombosed cortical veins are similar to those described in dural sinus thrombosis.
-
AJNR Am J Neuroradiol · Feb 1998
Comparative StudyInversion-recovery echo-planar MR in adult brain neoplasia.
A T1-weighted multishot inversion-recovery (IR) echo-planar MR imaging (EPI) sequence was developed to improve intracranial tissue differentiation; its diagnostic utility was compared with that of conventional axial T1-weighted spin-echo and axial T2-weighted turbo spin-echo sequences. ⋯ Multishot IR-EPI is superior to conventional T1-weighted spin-echo imaging for parenchymal tissue contrast and lesion conspicuity, and is equal to T2-weighted turbo spin-echo imaging in sensitivity to pathologic entities.
-
AJNR Am J Neuroradiol · Feb 1998
Periganglionic foraminal steroid injections performed under CT control.
The purpose of our study was to evaluate the efficacy of direct intraforaminal steroid injections into the periganglionic space in the treatment of radicular pain. ⋯ Intraforaminal steroid injection is useful in the treatment of radicular pain, particularly in cases of foraminal degenerative stenosis.
-
AJNR Am J Neuroradiol · Feb 1998
Functional MR imaging of cortical activation of the cerebral hemispheres during motor tasks.
We used functional MR imaging to evaluate cortical activation in the precentral, central, and postcentral regions of the contralateral and ipsilateral cerebral hemispheres during left- and right-handed motor tasks. ⋯ Our results confirmed those of previous investigators that ipsilateral activation is more pronounced during left-sided movements than during right-sided movements. The variation in activation of the precentral, central, and postcentral subregions suggests different roles of the ipsilateral and contralateral hemispheres during motor tasks.
-
Our purpose was to describe the MR findings and evolution of spinal cord abscess and to define those MR features that allow differentiation of cord infection from other intramedullary abnormalities. ⋯ A characteristic sequence of imaging findings aids in the differentiation of cord infection from other intramedullary lesions.