AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Feb 2000
Short-term arteriographic and clinical outcome after cerebral angioplasty and stenting for intracranial vertebrobasilar and carotid atherosclerotic occlusive disease.
The safe performance of percutaneous transluminal cerebral angioplasty for intracranial atherosclerotic lesions requires that the risk of complications, such as acute occlusion or symptomatic dissection, and restenosis be reduced. Our purpose was to assess the effectiveness, safety, and short-term arteriographic and clinical outcome of cerebral angioplasty and stenting (CAS) for intracranial vertebrobasilar and distal internal carotid atherosclerotic occlusive lesions. ⋯ CAS appears to be a safe and effective means for treating intracranial atherosclerotic occlusive disease, yielding a favorable arteriographic and clinical outcome.
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AJNR Am J Neuroradiol · Feb 2000
Relationship of Schmorl's nodes to vertebral body endplate fractures and acute endplate disk extrusions.
Literature regarding clinical pain syndromes associated with acute, traumatic Schmorl's nodes (SNs) is limited. Our purpose was to determine whether an SN could be related to a previous traumatic event producing either acute SN or a vertebral endplate fracture. ⋯ Most (57%) of the SNs in this series could be traced to episodes of significant, sudden-onset, localized, nonradiating back pain and tenderness for which the MR images showed SNs surrounded by vertebral body marrow edema. The remaining SNs (43%) were not immediately apparent as SNs and manifested only as vertebral body edema representing endplate fracture but did evolve into classical chronic SNs that follow-up imaging revealed.
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AJNR Am J Neuroradiol · Feb 2000
Cervical diskography: analysis of provoked responses at C2-C3, C3-C4, and C4-C5.
Previous authors have described the locations of provoked responses to cervical diskography from C3-C4 to C6-C7, but we have found no description of the findings at C2-C3. This study was undertaken to analyze the sensations provoked during cervical diskography at C2-C3 and to compare the results with those provoked at C3-C4 and C4-C5. ⋯ Diskography at C2-C3 and C3-C4 frequently produces pain sensations in the head, craniovertebral junction, and neck. There is no correlation between C2-C3 disk morphology and the diskographically provoked response.
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AJNR Am J Neuroradiol · Jan 2000
Comparative Study Clinical TrialIn vivo 1H MR spectroscopy of human head and neck lymph node metastasis and comparison with oxygen tension measurements.
Current diagnostic methods for head and neck metastasis are limited for monitoring recurrence and assessing oxygenation. 1H MR spectroscopy (1H MRS) provides a noninvasive means of determining the chemical composition of tissue and thus has a unique potential as a method for localizing and characterizing cancer. The purposes of this investigation were to measure 1H spectral intensities of total choline (Cho), creatine (Cr), and lactate (Lac) in vivo in human lymph node metastases of head and neck cancer for comparison with normal muscle tissue and to examine relationships between metabolite signal intensities and tissue oxygenation status. ⋯ 1H MRS may be useful for differentiating metastatic head and neck cancer from normal muscular tissue and may allow for the possibility of assessing oxygenation. Potential clinical applications include the staging and monitoring of treatment.