AJNR. American journal of neuroradiology
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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.
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AJNR Am J Neuroradiol · Jun 1997
The low sensitivity of fluid-attenuated inversion-recovery MR in the detection of multiple sclerosis of the spinal cord.
To confirm the expected superiority of fluid-attenuated inversion-recovery (FLAIR) over conventional fast spin-echo MR imaging in the detection of multiple sclerosis (MS) of the spinal cord. ⋯ Although successful in suppressing CSF signal and reducing imaging artifacts, fast FLAIR imaging appears unreliable in the detection of MS lesions in the spinal cord.
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AJNR Am J Neuroradiol · Jun 1997
Proton MR spectroscopy of squamous cell carcinoma of the extracranial head and neck: in vitro and in vivo studies.
To determine the ability of in vitro one-dimensional and two-dimensional proton MR spectroscopy to help differentiate squamous cell carcinoma of the extracranial head and neck from normal tissues and to correlate the in vitro observations with clinical studies. ⋯ One-dimensional and 2-D proton MR spectroscopy can help differentiate primary squamous cell carcinoma and nodal metastases containing squamous cell carcinoma from normal tissue both in vitro and in vivo. In addition, 2-D spectroscopy can help identify the presence of certain amino acids in squamous cell carcinoma that are not detected in normal tissue.
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AJNR Am J Neuroradiol · Jun 1997
Value of single-voxel proton MR spectroscopy in temporal lobe epilepsy.
To study the value of different parameters derived from single-voxel proton MR spectroscopy of the mesial temporal lobes in the lateralization of the epileptogenic zone in patients with temporal lobe epilepsy. ⋯ With an adequate asymmetry index, NAA/Cho+Cr and NAA are equally sensitive in predicting the side of involvement in patients with unilateral temporal lobe epilepsy.