title: Magnetic resonance spectroscopic and relaxometric determination of bone marrow changes in anorexia nervosa.
abstract: OBJECTIVE
  The objective of this study was to assess and quantify bone marrow changes in patients with anorexia nervosa using 1H magnetic resonance spectroscopy and relaxometry.
  
  
  METHODS
  The bone marrow fat fraction and the longitudinal and transverse relaxation times (T1 and T2, respectively) of water were measured in the lumbar and femoral marrow of 20 patients with anorexia nervosa and 19 healthy control subjects.
  
  
  RESULTS
  Patients with anorexia nervosa showed significant hyperhydration and reduction of the fat fraction in their bone marrow, predominantly in the proximal femur. These changes were associated with hematological abnormalities. In a retest of seven patients after psychotherapy and gain of weight, the pathological changes in marrow proved to be largely reversible in correlation with the increase in body mass index.
  
  
  CONCLUSIONS
  Fat depletion and excess of tissue water in the bone marrow in anorexia nervosa can be quantified by 1H magnetic resonance spectroscopy and relaxometry. The distribution of the pathological changes in the lumbar and femoral marrow follows the pattern of normal bone marrow conversion from hematopoietic to cellular during childhood.
authors.affiliation: Psychosomatic Clinic, University of Bonn, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Geiser
authors.forename: P
authors.initials: P
authors.lastname: Mürtz
authors.forename: G
authors.initials: G
authors.lastname: Lutterbey
authors.forename: F
authors.initials: F
authors.lastname: Träber
authors.forename: W
authors.initials: W
authors.lastname: Block
authors.forename: K
authors.initials: K
authors.lastname: Imbierowicz
authors.forename: G
authors.initials: G
authors.lastname: Schilling
authors.forename: H
authors.initials: H
authors.lastname: Schild
authors.forename: R
authors.initials: R
authors.lastname: Liedtke
mesh_terms: D000293:Adolescent; D000328:Adult; D000856:Anorexia Nervosa / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D015992:Body Mass Index; D001835:Body Weight / Q000502:physiology; D001853:Bone Marrow / Q000473:pathology*; D005260:Female; D006801:Humans; D050356:Lipid Metabolism; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D008875:Middle Aged; D014882:Water-Electrolyte Balance / Q000502:physiology*