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In Vivo Proton Magnetic Resonance Spectroscopy of the Medial Temporal Lobes of Former Prisoners of War With and Without Posttraumatic Stress Disorder

Received October 11, 2001; revised June 19, 2002; accepted June 26, 2002. From the Mental Health Service, Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; South Central Mental Illness Research, Education, and Clinical Centers (MIRECC); the Medical Sciences Departments of Psychiatry, Radiology, Pathology, and Biochemistry, University of Arkansas, Little Rock, Arkansas. Address correspondence to Dr. Thomas Freeman, North Little Rock PTSD Program, North Little Rock VAMC, mail code 116AP/NLR, 2200 Fort Roots Drive, North Little Rock, AR 72114; Thomas.Freeman{at}med.va.gov (E-mail).

ABSTRACT

Proton magnetic resonance spectroscopy was used to compare medial temporal lobe (MTL) concentrations of N-acetylaspartate and choline between former prisoners of war (POWs) with and without posttraumatic stress disorder (PTSD). MTL N-acetylaspartate and reexperiencing symptoms correlated strongly in the POW subjects with PTSD, suggesting a relationship between reexperiencing symptoms and the integrity of MTL structures.

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