title: Relationship between vertebral bone marrow blood perfusion and common carotid intima-media thickness in aging adults.
abstract: OBJECTIVE
  To evaluate the relationship between vertebral marrow blood perfusion and common carotid intima-media thickness (IMT) in aging adults.
  
  
  METHODS
  An age- and sex-matched case control study was conducted. Subjects were contacted and enrolled voluntarily according to a database containing 2,258 cases that received carotid ultrasonography examination at our hospital in the previous two years. Forty-three pairs of subjects (56 male, 30 female; aged 44-85 years, average 63 years) underwent dynamic contrast-enhanced magnetic resonance (MR) study of the lumbar spine. The average peak enhancement percentage of the second to fourth lumbar vertebrae was used to represent the vertebral marrow perfusion status for each subject. The common carotid IMT, presence of plaque, peak enhancement percentage, body mass index (BMI), systolic and diastolic blood pressure, serum total cholesterol, high-density lipoprotein (HDL), and triglycerol levels were acquired for statistical analysis.
  
  
  RESULTS
  The average peak enhancement percentage was significantly lower in thickened IMT group compared to the normal IMT group (73 +/- 23 vs. 90 +/- 27, P=0.0023). The carotid IMT inversely correlated with vertebral peak enhancement percentage (r=-0.33, P=0.0018). The vertebral peak enhancement percentage was significantly lower in subjects with presence of any carotid plaque (P=0.032). Common carotid IMT was the only significant variable that was negatively associated with vertebral marrow perfusion after adjusting for the effect of sex, age, blood pressure, BMI, total cholesterol, HDL, and triglycerol level in linear regression model (P=0.008).
  
  
  CONCLUSIONS
  Our data demonstrate the negative association between vertebral marrow blood perfusion and common carotid IMT. These results suggest that common carotid IMT may provide the information of tissue perfusion status of the vertebral bone marrow.
authors.affiliation: Department of Radiology, Taipei Municipal Jen-Ai Hospital, Taipei, Taiwan.
authors.forename: Wei-Tsung
authors.initials: WT
authors.lastname: Chen
authors.forename: Tiffany
authors.initials: T
authors.lastname: Ting-Fang Shih
authors.forename: Chaur-Jong
authors.initials: CJ
authors.lastname: Hu
authors.forename: Ran-Chou
authors.initials: RC
authors.lastname: Chen
authors.forename: Hsing-Yang
authors.initials: HY
authors.lastname: Tu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology; D015992:Body Mass Index; D001853:Bone Marrow / Q000098:blood supply*; D017536:Carotid Artery, Common / Q000473:pathology; D016893:Carotid Stenosis / Q000175:diagnosis*; D016022:Case-Control Studies; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008055:Lipids / Q000097:blood; D008159:Lumbar Vertebrae / Q000033:anatomy & histology / Q000098:blood supply*; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D017539:Tunica Intima / Q000473:pathology*; D017540:Tunica Media / Q000473:pathology*
chemical_list: D003287:Contrast Media; D008055:Lipids; D019786:Gadolinium DTPA