AJNR. American journal of neuroradiology
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Assessment of postpublication errors in peer-reviewed journals is difficult and the numbers and types are unknown. We reviewed published errata in major clinical imaging journals in an attempt to understand the numbers and sources of errors in published articles. ⋯ Analysis of the 8910 articles published by the 5 journals during the study period, revealed the number of minor and major errors were few, 1.66% and 0.11%, respectively. Of these errors, 93.7% were considered minor and 6.3% major. Most major errors were judged to be the responsibility of the authors, whereas most minor ones were the responsibility of the journals.
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AJNR Am J Neuroradiol · Aug 2012
Comparative StudyRelationship between tumor enhancement, edema, IDH1 mutational status, MGMT promoter methylation, and survival in glioblastoma.
Both IDH1 mutation and MGMT promoter methylation are associated with longer survival. We investigated the ability of imaging correlates to serve as noninvasive biomarkers for these molecularly defined GBM subtypes. ⋯ Imaging features are potentially predictive of IDH1 mutational status but were poorly correlated with MGMT promoter methylation. Edema stratifies survival in MGMT promoter methylated but not in unmethylated tumors; patients with methylated tumors with little or no edema have particularly long survival.
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AJNR Am J Neuroradiol · Aug 2012
ReviewChallenges of the anatomy and diffusion tensor tractography of the Meyer loop.
This review addresses the complex and often controversial anatomy of the anterior bundle of the OR, also known as the Meyer loop. Before the advent of MR imaging, 2 main types of studies attempted to ascertain the "safe" distance for anterior temporal lobe resection to avoid postsurgical VFDs. ⋯ Although many of these techniques are still experimental, there are some clinical situations for which they may prove to be very helpful if properly performed and validated. The motivation for this review was to improve the outcome of patients with TLE undergoing temporal lobectomy: Would having anatomic information about the OR available to the neurosurgeon decrease the risk of postsurgical VFDs?
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AJNR Am J Neuroradiol · Aug 2012
Comparative StudyDiffusion-weighted MR imaging in head and neck cancer: comparison between half-fourier acquired single-shot turbo spin-echo and EPI techniques.
Several studies have reported on the clinical utility of DWI in head and neck cancer, but none of these studies compared HASTE with EPI-DWI in patients with head and neck cancer. The aim of our study was to compare detection and delineation of primary tumors and lymph nodes by using HASTE and EPI-DWI techniques in patients with HNSCC. ⋯ Primary tumors and lymph nodes are more easily visualized on EPI-DWI compared with HASTE-DWI. EPI-DWI has geometric distortion, however, which has a negative effect on interobserver agreement of ADC values.