AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Apr 2007
Comparative StudyDiagnostic accuracy of 3D time-of-flight MR angiography compared with digital subtraction angiography for follow-up of coiled intracranial aneurysms: influence of aneurysm size.
3D time-of-flight MR angiography (3D TOF MRA) may be used as noninvasive alternative to digital subtraction angiography (DSA) for the follow-up of patients with intracranial aneurysms treated with Guglielmi detachable coils (GDCs). We aimed to determine the influence of aneurysm size and location on diagnostic accuracy of 3D TOF MRA for follow-up of intracranial aneurysms treated with GDCs. ⋯ The sensitivity of 3D TOF MRA for detection of reperfusion or residual perfusion of coiled intracranial aneurysms varies considerably depending on the size of the aneurysms. No conclusions can be drawn regarding a possible influence of aneurysm location on diagnostic accuracy of 3D TOF MRA. These findings may influence the decision about whether to replace DSA by 3D TOF MRA for the follow-up of patients with intracranial aneurysms treated with GDCs.
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AJNR Am J Neuroradiol · Apr 2007
Case ReportsDural arteriovenous fistulas with cortical venous drainage: incidence, clinical presentation, and treatment.
Our purpose was to report our experience with intracranial dural arteriovenous fistulas (DAVFs) with cortical venous drainage during a 12-year period. ⋯ Most DAVFs with cortical venous drainage have an aggressive clinical course. Treatment by a neurovascular team by using surgery, embolization, or a combination resulted in cure in all cases, with a very low complication rate.
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AJNR Am J Neuroradiol · Apr 2007
Lower cervical nerve root block using CT fluoroscopy in patients with large body habitus: another benefit of the swimmer's position.
We describe a method of performing lower cervical nerve root block (CNRB) with CT fluoroscopy in patients with large body habitus using the swimmer's position. This approach reduces image noise with acceptable visualization of vital structures and improved foraminal/root access. Anticipated use of the swimmer's position coupled with minimally modified radiation exposure parameters can limit radiation dose to operator/patient and reduce procedure time to match that of CNRB using CT fluoroscopy in typical patients.
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AJNR Am J Neuroradiol · Apr 2007
Vertebroplasty for osteoporotic fractures with spinal canal compromise.
Percutaneous vertebroplasty can aggravate spinal canal narrowing, especially in patients with preoperative retropulsion. The purpose of this study was to evaluate changes in spinal canal dimension during percutaneous vertebroplasty for osteoporotic fractures with retropulsion. ⋯ Vertebroplasty can be performed safely in patients with spinal canal compromise. This procedure can reduce pain, increase vertebral body height, and decrease wedge angle without worsening of retropulsion.