Multi-Contrast Differentiation by Dual-Energy Spectral CT Angiography in a Patient with Pulmonary Barium Granulomas

Tommaso D’Angelo*, Francesco M. Arico*, Lydia Broccio, Giorgio Ascenti, Silvio Mazziotti, Christian Booz, Simon S. Martin, Ibrahim Yel, Ludovica R.M. Lanzafame, Alfredo Blandino, Carmelo Sofia

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
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Abstract

Barium inhalation usually relates to accidental aspiration during radiological procedures with an oral contrast agent. When present, barium lung deposits are visible as high-density opacities on chest X-ray or CT scan due to high atomic number, and they may be indistinguishable from calcifications. Dual-layer spectral CT has shown good material differentiation capabilities, due to its increased high-Z element range and smaller spectral separation between low- and high-energy spectral data. We present the case of a 17-year-old female with a history of tracheoesophageal fistula, who underwent chest CT angiography on a dual-layer spectral platform. Despite the close Z numbers and K-edge energy levels of the two different contrast materials, spectral CT was able to identify barium lung deposits from a previous swallowing study and to clearly distinguish them from calcium and the surrounding iodine-containing structures.

Original languageEnglish
Article number832
JournalDiagnostics
Volume13
Issue number5
DOIs
Publication statusPublished - Mar 2023

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© 2023 by the authors.

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