title: F-18 Fdg PET/CT Findings of a Patient with Takayasu Arteritis Before and After Therapy.
abstract: Vasculitis is defined as inflammation and necrosis with leukocytic infiltration of the blood vessel wall. Takayasu arteritis is a chronic inflammatory arteritis that primarily involves the aorta and its main branches. A 64-year-old female patient with a 2-month history of fever of unknown origin was presented to our clinic for F-18 FDG PET/CT imaging. Baseline PET/CT images demonstrated intense F-18 FDG uptake in the aorta, bilateral subclavian and brachiocephalic arteries consistent with Takayasu arteritis. After 2 months of immunosuppressive therapy, she was asymptomatic and follow-up FDG PET/CT scan showed almost complete disappearance of large vessels' F-18 FDG uptake. FDG PET/CT is a sensitive technique for assessing presence of large-vessel vasculitis such as Takayasu arteritis, extent of large-vessel inflammation and disease activity after therapy.
  
  
  BACKGROUND
  None declared.
authors.affiliation: Istanbul University Cerrahpaşa Medical Faculty, Department of Nuclear Medicine, Istanbul, Turkey.
authors.forename: Sait
authors.initials: S
authors.lastname: Sağer
authors.forename: Sabire
authors.initials: S
authors.lastname: Yılmaz
authors.forename: Meftune
authors.initials: M
authors.lastname: Ozhan
authors.forename: Metin
authors.initials: M
authors.lastname: Halaç
authors.forename: Nurhan
authors.initials: N
authors.lastname: Ergül
authors.forename: Hediye
authors.initials: H
authors.lastname: Ciftci
authors.forename: T Fikret
authors.initials: TF
authors.lastname: Cermik
keywords: F-18 FDG; Takayasu arteritis; Vasculitis