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Quantitative bone single-photon emission computed tomography imaging for uninfected nonunion: comparison of hypertrophic nonunion and non-hypertrophic nonunion
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Quantitative bone single-photon emission computed tomography imaging for uninfected nonunion: comparison of hypertrophic nonunion and non-hypertrophic nonunion
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Journal Article
Quantitative bone single-photon emission computed tomography imaging for uninfected nonunion: comparison of hypertrophic nonunion and non-hypertrophic nonunion
2021
Overview
Background
Recently, a standardized uptake value (SUV) has been used to evaluate bone single-photon emission computed tomography (SPECT). The aim of this study was to investigate quantitative SPECT imaging of uninfected nonunion to compare hypertrophic nonunion and non-hypertrophic nonunion using volume-based parameters.
Methods
We evaluated 23 patients with uninfected nonunion who underwent SPECT acquisition 3 h after an injection of
99m
Tc-hydroxymethylene diphosphonate or
99m
Tc-methylene diphosphonate from April 2014 to November 2019. We reconstructed the acquired data and performed voxel-based quantitative analysis using the GI-BONE software. Quantitative parameters, maximum SUV (SUV
max
), peak SUV (SUV
peak
), and mean SUV (SUV
mean
) in the high and low uptake areas of nonunion were compared between hypertrophic nonunion and non-hypertrophic nonunion. The contralateral limb was used as a control, and the ratios of the quantitative parameters were calculated.
Results
The values for the quantitative parameters (high uptake area/low uptake area, respectively), SUV
max
control ratio (12.13 ± 4.95/6.44 ± 4.71), SUV
peak
control ratio (11.65 ± 4.58/6.45 ± 4.64), and SUV
mean
control ratio (11.94 ± 5.03/6.28 ± 4.95) for hypertrophic nonunion were higher than those for non-hypertrophic nonunion (7.82 ± 4.76/3.41 ± 2.09 (
p
= 0.065/0.12), 7.56 ± 4.51/3.61 ± 2.23 (
p
= 0.065/0.22), and 7.59 ± 5.18/3.05 ± 1.91 (
p
= 0.076/0.23)).
Conclusions
SUV
max
, SUV
peak
, and SUV
mean
control ratios obtained from bone SPECT images can quantitatively evaluate the biological activity of nonunions and may be an effective evaluation method for treatment decisions, especially the necessity of autologous bone grafting.
