Injury of the Hypothalamus in Patients With Hypoxic-Ischemic Brain Injury: A Diffusion Tensor Imaging Study.

Objectives: The survival rate for hypoxic-ischemic brain injury (HI-BI) is less than 20%. Several brain regions, including the caudate, hippocampus, and hypothalamus, are vulnerable to HI-BI. Hypothalamus is involved in regulation of temperature, sleep-wakefulness cycle, emotional behavior, and memory function. Using diffusion tensor imaging, we examined injury of the hypothalamus in patients with HI-BI. Methods: Twelve patients with HI-BI and 27 healthy control subjects were recruited. The region of interest was defined for the hypothalamus and the fractional anisotropy and apparent diffusion coefficient were measured. Results: The fractional anisotropy value was significantly lower in the patient group compared with the control group (P

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