AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Sep 2006
Procedural morbidity and mortality of elective coil treatment of unruptured intracranial aneurysms.
To report morbidity, mortality, and angiographic results of elective coiling of unruptured intracranial aneurysms. ⋯ Elective coiling of unruptured intracranial aneurysms has low procedural mortality and morbidity. For the management of unruptured aneurysms, endovascular treatment should be considered.
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AJNR Am J Neuroradiol · Sep 2006
Subdural hematomas in infants with benign enlargement of the subarachnoid spaces are not pathognomonic for child abuse.
Patients who have benign enlargement of the subarachnoid spaces (BESS) have long been suspected of having an increased propensity for subdural hematomas either spontaneously or as a result of accidental injury. Subdural hematomas in infants are often equated with nonaccidental trauma (NAT). A better understanding of the clinical and imaging characteristics of subdural hematomas that occur either spontaneously or as a result of accidental trauma may help distinguish this group of patients from those who suffer subdural hematomas as a result of NAT. The purpose of this study is to describe the clinical and imaging characteristics of subdural hematomas that occur either spontaneously or as a result of accidental injury in infants with BESS. ⋯ Although suspicious for NAT, subdural hematomas can occur in children either spontaneously or as a result of accidental trauma. Caution must be exercised when investigating for NAT based on the sole presence of subdural hematomas, especially in children who are otherwise well and who have BESS.
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AJNR Am J Neuroradiol · Sep 2006
Multicenter Study Comparative Study Controlled Clinical TrialEndovascular treatment of intracranial aneurysms with matrix detachable coils: immediate posttreatment results from a prospective multicenter registry.
Endovascular treatment of intracranial aneurysms by using detachable coils has become an accepted alternative to surgery. To reduce the rate of aneurysm recanalization after treatment, biologically active polyglycolic/polylactic acid-covered platinum coils have been proposed. A prospective and multicenter registry was conducted in France to evaluate the safety and short-term and long-term efficacy of Matrix detachable coils. This first analysis is focused on the safety and short-term efficacy. ⋯ Endovascular treatment of intracranial aneurysms by using Matrix detachable coils is feasible and demonstrated initial angiographic results and overall morbidity and mortality rates that are within the ranges found in the literature in the use of bare platinum coils.
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AJNR Am J Neuroradiol · Sep 2006
Randomized Controlled TrialDoes high-field MR imaging have an influence on the classification of patients with clinically isolated syndromes according to current diagnostic mr imaging criteria for multiple sclerosis?
Current MR imaging criteria for multiple sclerosis (MS) do not specify the magnetic field strength. The aim of this study was to investigate whether different MR imaging field strengths, specifically high-field MR imaging, have an impact on the classification of patients with clinically isolated syndromes suggestive of MS, according to MR imaging and diagnostic criteria. ⋯ MR field strength, specifically high-field MR imaging, has a substantial influence on the classification of patients with CIS according to imaging and a mild influence on the classification according diagnostic criteria for MS, leading to consequences for prognostic classification, imaging guidelines, and clinical trials.
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AJNR Am J Neuroradiol · Sep 2006
Effects of number of diffusion gradient directions on derived diffusion tensor imaging indices in human brain.
The effects of a number of diffusion-encoding gradient directions (NDGD) on diffusion tensor imaging (DTI) indices have been studied previously with theoretic analysis and numeric simulations. In this study, we made in vivo measurements in the human brain to compare different clinical scan protocols and to evaluate their effects on the calculated DTI indices. ⋯ For ROI analyses, different NDGDs lead to similar values of FA and D but different eigenvalues. However, different NDGDs at the voxel level provide varying values. The selection of the NDGD, therefore, should depend on the focus of different DTI applications.