AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Feb 2009
Do apparent diffusion coefficient measurements predict outcome in children with neonatal hypoxic-ischemic encephalopathy?
Diffusion-weighted imaging (DWI) permits early detection and quantification of hypoxic-ischemic (HI) brain lesions. Our aim was to assess the predictive value of DWI and apparent diffusion coefficient (ADC) measurements for outcome in children with perinatal asphyxia. ⋯ ADC values in normal-appearing basal ganglia and brain stem correlated with outcome, independently of all MR imaging findings including those of DWI. ADC values in visibly abnormal brain tissue on DWI did not show a predictive value for outcome.
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AJNR Am J Neuroradiol · Feb 2009
Fate of manuscripts previously rejected by the American Journal of Neuroradiology: a follow-up analysis.
This is a follow-up article to "Fate of Submitted Manuscripts Rejected from the American Journal of Neuroradiology: Outcomes and Commentary." The purpose of this study was to quantify differences in citation frequency between manuscripts published in the American Journal of Neuroradiology (AJNR) and those published after AJNR rejection and to understand citation frequency differences among rejected manuscripts. ⋯ Results from this study suggest that publications initially rejected from AJNR have a significantly lower citation frequency than those accepted by AJNR. Among rejected manuscripts, citations frequencies were highest in technical reports and among journals close to the neuroradiologic discipline.
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AJNR Am J Neuroradiol · Jan 2009
Clinical TrialIntra-arterial nicardipine infusion improves CT perfusion-measured cerebral blood flow in patients with subarachnoid hemorrhage-induced vasospasm.
Our aim was to determine the effects of intra-arterial (IA) nicardipine infusion on the cerebral hemodynamics of patients with aneurysmal subarachnoid hemorrhage (aSAH)-induced vasospasm by using first-pass quantitative cine CT perfusion (CTP). ⋯ IA nicardipine improves CBF and MTT in ischemic regions in patients with aSAH-induced vasospasm. Our data provide a tissue-level complement to the favorable effects of IA nicardipine reported on prior angiographic studies. CTP may provide a surrogate marker for monitoring the success of treatment strategies in patients with aSAH-induced vasospasm.
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AJNR Am J Neuroradiol · Jan 2009
Malignant fibrous histiocytoma of the head and neck: CT and MR imaging findings.
Malignant fibrous histiocytoma (MFH) is uncommon in the head and neck. The purpose of this study was to investigate CT and MR imaging features of 13 cases of MFH of this area. ⋯ Although rare, MFH of the head and neck is an aggressive tumor that arises most commonly in the sinonasal tract and is frequently associated with soft-tissue invasion and bone destruction on CT and MR images.
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AJNR Am J Neuroradiol · Jan 2009
Normal thickness and appearance of the prevertebral soft tissues on multidetector CT.
Analysis of the prevertebral soft tissue (PVST) is helpful in detecting osseous and ligamentous injuries of the cervical spine. Because the standard of care has shifted from radiographs to multidetector CT (MDCT), a re-examination of the PVST on MDCT images is needed to establish normal values for thickness appropriate for this imaging technique. ⋯ The thickness of the PVST is important in the detection of underlying injuries to the cervical spine. We propose the obtained values as the upper limits of normal for PVST thickness on MDCT images in the adult population.