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European Journal of Nuclear Medicine

, Volume 22, Issue 9, pp 1073–1077 | Cite as

18FDG PET and acetazolamide-enhanced99mTc-HMPAO SPET in systemic lupus erythematosus

  • Frank Grünwald
  • Axel Schomburg
  • Achim Badali
  • Jürgen Ruhlmann
  • Laszlo Pavics
  • Hans-J. Biersack
Case report

Abstract

In systemic lupus erythematosus (SLE), brain and kidney are the most frequently affected organs. Measurements of cerebral blood flow and metabolism by means of positron emission tomography (PET) and single-photon emission tomography (SPET) can contribute to the diagnostic assessment of the involvement of the central nervous system (CNS) in SLE. Functional imaging has been proven to be more sensitive than morphological imaging (magnetic resonance imaging and computed tomography). In this report, we present the case of a 70-year-old female patient, suffering from SLE without symptoms of CNS involvement. In addition to a SPET study using technetium-99m hexamethylpropylene amine oxime (99mTc-HMPAO) and a PET scan with fluorine-18 deoxyglucose (18FDG), a SPET study after acetazolamide injection was performed in order to assess the cerebral perfusion reserve. While the PET scan showed no major abnormalities, and the baseline SPET study revealed only minor changes, the acetazolamide-enhanced SPET study revealed a marked reduction of the cortical perfusion reserve, particularly in both frontal lobes. It is concluded that “preclinical” CNS involvement, mainly caused by pathological mechanisms involving the cerebral blood vessels, can be considered to exist in this patient with SLE.

Key words

Fluorine-18 deoxyglucose Positron emission tomography Technetium-99m hexamethylpropylene amine oxime Single-photon emission tomography Acetazolamide 

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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • Frank Grünwald
    • 1
  • Axel Schomburg
    • 1
  • Achim Badali
    • 2
  • Jürgen Ruhlmann
    • 1
  • Laszlo Pavics
    • 1
  • Hans-J. Biersack
    • 1
  1. 1.Department of Nuclear MedicineUniversity of BonnBonnGermany
  2. 2.Department of DermatologyUniversity of BonnGermany

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