Erratum to: Pediatr Radiol (2017)

DOI 10.1007/s00247-017-3874-1

There were typographical errors in the Results section of the article. The following values (mean ± standard deviation) are correct: Mean globus pallidus:thalamus signal intensities at the first and the last MR examination were 1.05 ± 0.01 and 1.09 ± 0.01, respectively. Mean dentate nucleus:pons signal intensities at the first and last MR examinations were 0.94 ± 0.04 and 1.01 ± 0.04, respectively. These results form four of the data points in Fig. 2 in the article, and this figure is correct as published. All remaining results and statistical analyses are correct as published.