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Clinical Value of Dual-phase 18F-FDG SPECT with Serum Procalcitonin for Identification of Etiology in Tumor Patients with Fever of Unknown Origin

  • Zhang, Qun (Division of Infectious Diseases, Affiliated Zhongda Hospital of Southeast University) ;
  • Shan, Chun (Division of Infectious Diseases, Affiliated Zhongda Hospital of Southeast University) ;
  • Wu, Pei (Division of Infectious Diseases, Affiliated Zhongda Hospital of Southeast University) ;
  • Huang, Xin-En (Department of Chemotherapy, the Affiliated Jiangsu Cancer Hospital of Nanjing Medical University & Jiangsu Institute of Cancer Research)
  • Published : 2014.01.30

Abstract

Objective: The purpose of the study was to evaluate clinical value of dual-phase $^{18}F$-FDG SPECT with serum procalcitonin (PCT) in identifying cancers in patients with fever of unknown origin (FUO). Methods: PCT test and dual-phase $^{18}F$-FDG SPECT were sequentially performed on 50 consecutive patients with FUO. Two radiologists evaluated all $^{18}F$-FDG SPECT data independently. A consensus was reached if any difference of opinions existed. Final diagnosis was based on a comprehensive analysis of results for the PCT test, dual-phase $^{18}F$-FDG SPECT and bacterial cultivation, regarded as a gold standard. Results: Among 50 patients, 34 demonstrated PCT ${\geq}0.5{\mu}g/L$. Coincidence imaging showed in 37 patients with inflammatory lesions, and 13 with malignancy. Finally, 36 bacterial, 1 fungal and 1 viral infections, as well as 12 cancerous fevers were confirmed by dual-phase $^{18}F$-FDG SPECT with PCT, combined with bacterial cultivation and clinical follow-up. Conclusion: Our study demonstrated that dual-phase $^{18}F$-FDG SPECT in association with PCT could be a valuable tool for diagnosis in tumor patients with FUO.

Keywords

References

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