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Arch Neurol. 2007;64(9):1361.

Error in Text and Figures. In the Original Contribution by Apostolova et al titled "Conversion of Mild Cognitive Impairment to Alzheimer Disease Predicted by Hippocampal Atrophy Maps," published in the May 2006 issue of the Archives (2006;63(5):693-699), errors occurred in the text and in Figures 2 and 3 on pages 694, 696, and 697, respectively. In the "Methods" subsection entitled "Imaging Data Acquisition and Analysis," the first sentence should have read as follows: "Imaging data were collected on a 1.5-T Signa magnetic resonance imaging scanner (GE Medical Systems, Milwaukee, Wis) with the following protocol: 3D spoiled gradient coronal acquisition perpendicular to the anterior-posterior commissure line, repetition time, 28 milliseconds; echo time, 6 milliseconds; field of view, 220 mm; 256 x 192 matrix; and slice thickness, 1.5 mm." In Figure 2, the hippocampal maps for both the right and left sides of the top and bottom maps in panels B through D were flipped horizontally. In Figure 3, the statistical maps for both the right and left sides of the top and bottom maps were also flipped horizontally. The correct figures are printed here with their legends.

View larger version (100K): [in this window] [in a new window] [as a PowerPoint slide]   Figure 2. Hippocampal maps. A, Schematic representation of the hippocampal subfields is mapped onto the hippocampal surface (CA1 in blue, CA2 and CA3 in green, and subiculum in red). Definitions are based on Duvernoy34 and West and Gundersen.35 B-D, Statistical maps compare hippocampal radial atrophy between patients with mild cognitive impairment (MCI) that converted to Alzheimer disease (MCI-c) and those with stable MCI (MCI-nc) (B); between MCI-nc patients and patients with MCI that improved (MCI-i) (C); and between MCI-c and MCI-i patients (D).

View larger version (52K): [in this window] [in a new window] [as a PowerPoint slide]   Figure 3. Statistical maps showing the correlation between the delayed recall score on the California Verbal Learning Test and regional hippocampal atrophy.