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Image acquisition and interpretation criteria for Tc-99m-HMPAO-labelled white blood cell scintigraphy: results of a multicentre study

Erba, P. A., Glaudemans, A. W. J. M., Veltman, N. C., Sollini, M., Pacilio, M., Galli, F., Dierckx, R. A. J. O. & Signore, A., Apr-2014, In : European Journal of Nuclear Medicine and Molecular Imaging. 41, 4, p. 615-623 9 p.

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  • Image acquisition and interpretation criteria for Tc-99m-HMPAO-labelled white blood

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DOI

Purpose There is no consensus yet on the best protocol for planar image acquisition and interpretation of radiolabelled white blood cell (WBC) scintigraphy. This may account for differences in reported diagnostic accuracy amongst different centres.

Methods This was a multicentre retrospective study analysing 235 WBC scans divided into two groups. The first group of scans (105 patients) were acquired with a fixed-time acquisition protocol and the second group (130 patients) were acquired with a decay time-corrected acquisition protocol. Planar images were interpreted both qualitatively and semiquantitatively. Three blinded readers analysed the images.

Results The most accurate imaging acquisition protocol comprised image acquisition at 3 - 4 h and at 20 - 24 h in time mode with acquisition times corrected for isotope decay.

Conclusion Using this protocol, visual analysis had high sensitivity and specificity in the diagnosis of infection. Semiquantitative analysis could be used in doubtful cases, with no cut-off for the percentage increase in radiolabelled WBC over time, as a criterion to define a positive scan.

Original languageEnglish
Pages (from-to)615-623
Number of pages9
JournalEuropean Journal of Nuclear Medicine and Molecular Imaging
Volume41
Issue number4
Publication statusPublished - Apr-2014

    Keywords

  • White blood cells, Scintigraphy, Infection imaging, JOINT INFECTIONS, LEUKOCYTE, ENDOCARDITIS, PET

ID: 16219159