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AJNR - American Journal of Neuroradiology

Published ahead of print on December 7, 2007
doi: 10.3174/ajnr.A0873

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Pontine Hypoplasia in Children with Periventricular Leukomalacia

S. Yoshida^a, K. Hayakawa^a, A. Yamamoto^a, T. Kanda^b and Y. Yamori^b

^a Department of Radiology, Kyoto City Hospital, Kyoto, Japan
^b Department of Pediatric Neurology, St Joseph Hospital for Handicapped Children, Kyoto, Japan

View larger version (130K): [in this window] [in a new window]   Fig 1. SE T1-weighted midsagittal image (TR, 560; TE, 15) from which measurements of the AP diameter of the whole pons (black arrow), basis (white broken arrow), tegmentum (white arrow), and corpus callosal length (white dotted arrow) were obtained.

View larger version (21K): [in this window] [in a new window]   Fig 2. A, Whole pontine diameters in the PVL group and control group plotted with respect to age. The whole pontine diameter in the PVL group is smaller than in the control group. B, Basis diameters in the PVL group and control group plotted with respect to age. The basis diameter in the PVL group is smaller than in the control group. C, Tegmentum diameters in the PVL group and control group plotted with respect to age. Tegmentum diameter in the PVL group was smaller than in the control group. D, Corpus callosal lengths in the PVL group and control group plotted with respect to age. Corpus callosal length in the PVL group was smaller than in the control group.

View larger version (20K): [in this window] [in a new window]   Fig 3. A, Relationship between each age group and mean of whole pontine diameter (with 1 SD). In each age group, the whole pontine diameter in the PVL group is significantly smaller than in the control group. B, Relationship between each age group and mean basis diameter (with 1 SD). In the 0-, 1-, and 3-year age groups, basis diameter in the PVL group was significantly smaller than in the control group. C, Relationship between each age group and mean tegmentum diameter (with 1 SD). In the 1-, 2-, and 3-year age groups, tegmentum diameter in the PVL group was significantly smaller than in the control group. D, Relationship between each age group and mean corpus callosal length (with 1 SD). In each age group, corpus callosal length in the PVL group was significantly smaller than in the control group.

View larger version (16K): [in this window] [in a new window]   Fig 4. Correlation between whole pontine diameter and corpus callosal length in the PVL group (A) and the control group (B). In the PVL group (A), the correlation coefficient was 0.52, which was statistically significant (P < .001). The correlation coefficient in the control group (B) was 0.63, which was also statistically significant (P < .001).