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Dual energy CT can aid in the emergent differentiation of acute traumatic and pathologic fractures of the pelvis and long bones

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Abstract

Purpose

To determine whether dual energy CT (DECT) scanning can aid in the differentiation between acute traumatic and pathologic fractures of the pelvis and long bones.

Methods

Retrospective review of 11 patients with 15 pathologic fractures proven by biopsy and/or other advanced imaging modalities. Age- and sex-matched patients with non-pathologic traumatic fractures were used as controls. Studies were reviewed by two readers on syngo.via software before and after the creation of virtual bone marrow color maps. Hounsfield units (HU) of the marrow space at the level of the fracture were recorded on both reviews. Differences between the HU of the bone marrow of traumatic and pathologic fractures were compared using two-tailed unpaired t-test.

Results

A statistically significant difference was found in the HU of the affected bone marrow on DECT virtual noncalcium bone marrow color maps between the pathologic group (mean HU:4.89) and the non-pathologic group (mean HU: − 286.2) (p = 0.0177). HU measurements on the mixed kVp images were 150.4 for the pathologic and 94.1 for the non-pathologic fracture groups, respectively, with no statistical significance (p = 0.272).

Conclusions

DECT scanning can aid in the differentiation between hematoma at acute traumatic fracture sites and neoplasm at pathologic fracture sites. HU of the bone marrow is higher for pathologic fractures, and the difference in bone marrow attenuation is more evident on the virtual bone marrow color maps.

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Authors and Affiliations

  1. Department of Radiology and Nuclear Medicine, University of Maryland School of Medicine and Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD, USA

    Ghada Issa & Michael Mulligan

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  1. Ghada Issa
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  2. Michael Mulligan
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Correspondence to Michael Mulligan.

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Issa, G., Mulligan, M. Dual energy CT can aid in the emergent differentiation of acute traumatic and pathologic fractures of the pelvis and long bones. Emerg Radiol 27, 285–292 (2020). https://doi.org/10.1007/s10140-020-01753-w

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  • DOI: https://doi.org/10.1007/s10140-020-01753-w

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