Detection of myocardial inflammation by 18F-FDG-PET/CT in patients with systemic sclerosis without cardiac symptoms: a pilot study

Zsuzsanna Besenyi, Gergely Ágoston, Rita Hemelein, Annamária Bakos, Ferenc T. Nagy, Albert Varga, László Kovács, László Pávics

Research output: Contribution to journalArticle

Abstract

OBJECTIVES: Primary cardiac manifestation is a common complication of systemic sclerosis (SSc) with poor prognosis. The aim of the current study was to detect potential myocardial inflammation present in asymptomatic SSc patients by 18F-FDG-PET/CT and to investigate its relationship with early signs of myocardial dysfunction as detected by 2D speckle tracking echocardiography (2DSTE). METHODS: Sixteen consecutive patients with SSc and 9 control patients without clinical evidence of cardiac involvement were enrolled in the study. On 18F-FDG-PET acquired images blood-pool normalised SUV ratio and heterogenity index (HI: standard deviation of SUV divided with mean SUV) were calculated. Within 24 hours all SSc patients underwent 2DSTE strain analysis. RESULTS: Eight of 16 SSc patients were found to be visually PET-positive and showed significantly higher myocardial 18F-FDG SUV ratio (1.78±0.74 vs. 0.98±0.03; p<0.05) and heterogenity index (0.13±0.02 vs. 0.05±0.02; p<0.001) as compared to the control group. FDG-PET/CT derived values did not differ significantly between visually PET-negative (8/16) and control patients (SUV ratio: 0.98±0.05 vs. 0.98±0.03; HI: 0.05±0.01 vs. 0.05±0.02). Global left ventricular longitudinal strain values did not differ significantly between PET-positive and negative patients (17.18±3.49% vs. 17.59±3.65%). CONCLUSIONS: Myocardial inflammation, as a potential sign of early cardiac involvement can be detected by 18-FDG-PET/CT in a considerable percentage of systemic sclerosis patients presenting without cardiac symptoms.

Original languageEnglish
Pages (from-to)88-96
Number of pages9
JournalClinical and experimental rheumatology
Volume37
Issue number4
Publication statusPublished - Jul 1 2019

ASJC Scopus subject areas

  • Rheumatology
  • Immunology and Allergy
  • Immunology

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