Erratum
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The article “Characterization of Plaques Using 18F-FDG PET/CT in Patients with Carotid Atherosclerosis and Correlation with Matrix Metalloproteinase-1,” by Wu et al. (*J Nucl Med.* 2007;48:[227–233](http://jnm.snmjournals.org/lookup/volpage/48/227)), contains a unit-of-measure error. Throughout the article, the data for high-sensitivity C-reactive protein (hs-CRP) should have been given in units of mg/L instead of mg/dL. The authors regret the error.

In the article “Comparison of SPECT/CT, SPECT, and Planar Imaging with Single- and Dual-Phase 99mTc-Sestamibi Parathyroid Scintigraphy,” by Lavely et al. (*J Nucl Med.* 2007;48:[1084–1089](http://jnm.snmjournals.org/lookup/volpage/48/1084)), Table 1 contains an error. In the leftmost column, line 8 should read “early planar–early SPECT” instead of “early planar–delayed SPECT.” The authors regret the error.