Diagnostic accuracy of 99mTc-antigranulocyte SPECT/CT in patients with osteomyelitis and orthopaedic device-related infections: A retrospective analysis

Autor: A. Plate, V. Weichselbaumer, R. Schüpbach, S.F. Fucentese, M. Berli, M. Hüllner, Y. Achermann
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: International Journal of Infectious Diseases, Vol 91, Iss , Pp 79-86 (2020)
Druh dokumentu: article
ISSN: 1201-9712
DOI: 10.1016/j.ijid.2019.11.017
Popis: Objectives: Conventional imaging techniques are routinely used in the diagnostic work-up of patients with suspected osteomyelitis or orthopaedic implant-associated infections. Hybrid nuclear medicine imaging techniques are a suitable alternative to routine imaging modalities as they provide anatomical and functional information within one procedure. Our study investigated the performance of anti-granulocyte SPECT/CT using 99mTc-labelled monoclonal antibodies in the diagnosis of osteomyelitis and orthopaedic implant-associated infections. Methods: In this retrospective analysis, we included patients with 99mTc-antigranulocyte SPECT/CT acquired in the context of a suspected bone and joint infection. All patients underwent routine diagnostics and/or had a clinical follow-up of at least 12 months. Results: 26 episodes were included. Fifteen exams were performed for suspected osteomyelitis, and 11 for suspected orthopaedic implant-associated infection. SPECT/CT was ordered most often if standard diagnostic tests or conventional imaging modalities remained inconclusive. The overall sensitivity and specificity for the diagnosis of an infection were 77.8% and 94.1%, respectively. The positive predictive value was 87.5% and the negative predictive value 88.9%. Diagnostic accuracy was 88.5%. Conclusions: 99mTc-antigranulocyte SPECT/CT imaging has a high accuracy in the diagnosis of osteomyelitis and orthopaedic implant-associated infections and is a suitable non-invasive diagnostic tool if standard diagnostic examinations are inconclusive or not applicable. Keywords: Periprosthetic joint infection (PJI), Osteosynthesis associated infections (OAI), Osteomyelitis, 99mTc-antigranulocyte SPECT/CT, Monoclonal antibody, Diagnosis
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