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EJNMMI Research
Published in: EJNMMI Research 1/2017

Open Access 01-12-2017 | Original research

Blood perfusion in osteomyelitis studied with [15O]water PET in a juvenile porcine model

Authors: Lars Jødal, Ole L. Nielsen, Pia Afzelius, Aage K. O. Alstrup, Søren B. Hansen

Published in: EJNMMI Research | Issue 1/2017

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Abstract

Background

Osteomyelitis is a serious disease which can be difficult to treat despite properly instituted antibiotic therapy. This appears to be related at least partly to degraded vascularisation in the osteomyelitic (OM) lesions. Studies of perfusion in OM bones are, however, few and not quantitative. Quantitative assessment of perfusion could aid in the selection of therapy. A non-invasive, quantitative way to study perfusion is dynamic [15O]water positron emission tomography (PET). We aim to demonstrate that the method can be used for measuring perfusion in OM lesions and hypothesize that perfusion will be less elevated in OM lesions than in soft tissue (ST) infection. The study comprised 11 juvenile pigs with haematogenous osteomyelitis induced by injection of Staphylococcus aureus into the right femoral artery 1 week before scanning (in one pig, 2 weeks). The pigs were dynamically PET scanned with [15O]water to quantify blood perfusion. OM lesions (N = 17) in long bones were studied, using the left limb as reference. ST lesions (N = 8) were studied similarly.

Results

Perfusion was quantitatively determined. Perfusion was elevated by a factor 1.5 in OM lesions and by a factor 6 in ST lesions.

Conclusions

Blood perfusion was successfully determined in pathological subacute OM lesions; average perfusion was increased compared to that in a healthy bone, but as hypothesized, the increase was less than in ST lesions, indicating that the infected bone has less perfusion reserve than the infected soft tissue.
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Metadata
Title
Blood perfusion in osteomyelitis studied with [15O]water PET in a juvenile porcine model
Authors
Lars Jødal
Ole L. Nielsen
Pia Afzelius
Aage K. O. Alstrup
Søren B. Hansen
Publication date
01-12-2017
Publisher
Springer Berlin Heidelberg
Published in
EJNMMI Research / Issue 1/2017
Electronic ISSN: 2191-219X
DOI
https://doi.org/10.1186/s13550-016-0251-2

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