Letters to the Editor

Acute Alterations on DTI Caused by Alcohol Consumption: Region of Interest–Based Diffusion Tensor Analysis Limited Because of Poor Reproducibility, with the Additional Detrimental Effects of a Small Population Size and Minute Changes

Published online before print August 9, 2012, doi: 10.3174/ajnr.A3269 AJNR 2012 33: E115 B. Sarikayaa aDepartment of Radiology/Neuroradiology University of Minnesota and Hennepin County Medical Centers Minneapolis, Minnesota I read the article by Kong et al titled “Acute Effects of

MR Imaging: An Increasingly Important Tool in the Early Diagnosis of Wernicke Encephalopathy

Published online before print May 10, 2012, doi: 10.3174/ajnr.A3152 AJNR 2012 33: E92 G. Zuccolia aDepartment of Radiology University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh Pittsburgh, Pennsylvania N. Pipitoneb bRheumatology Unit, Department of Internal Medicine Azienda Ospedaliera ASMN Istituto di Ricovero e Cura

Corticospinal Tract MR Signal-Intensity Pseudonormalization on Magnetization Transfer Contrast Imaging: A Potential Pitfall in the Interpretation of the Advanced Compromise of Upper Motor Neurons in Amyotrophic Lateral Sclerosis

Published online before print March 29, 2012, doi: 10.3174/ajnr.A3114 AJNR 2012 33: E79-E80 A.J. da Rochaa and A.C. Martins Maia Jrb aDivision of Neuroradiology B.C. Oliveira Valériob bDivision of Neurology Santa Casa de Misericórdia de São Paulo São Paulo, Brazil