Figure 1.

Magnetic resonance spectroscopy images of the rat hippocampal CA3 at the injury side after hyperbaric oxygen therapy for 2 weeks.

(A) In the sham-surgery group, the NAA peak value was significantly higher than Cr and Ch values.

(B) In the traumatic brain injury group, the NAA value was significantly decreased, while the Cr and Ch values were elevated.

(C) In the hyperbaric oxygen therapy group, the NAA value was higher than that in the traumatic brain injury group. Both the NAA/Ch and NAA/Cr ratios were increased.

NAA: N-acetylaspartate; Cr: creatine; Ch: choline.