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This study is limited by the retrospective nature of the data analysis. In addition, the data were collected
in a single-centre study, although 3D-CT is a well-established diagnostic tool in this high-volume certified
centre of excellence for obesity and metabolic surgery.

To conclude, 3D-CT is quick, easy-to-perform and facilitates identification of the post-surgical gastric
anatomy. It represents a valuable additional diagnostic tool in post-bariatric patients with post-procedural
complications, since UE and UGI might miss the three-dimensional post-bariatric anatomy. 3D-CT might
be an important preoperative tool prior to revisional surgery and an ideal diagnostic complement in
patients with post-surgical complications following obesity surgery.

DECLARATIONS
Authors’ contributions
Designed the article: Stier C, Chiappetta S
Calculated the statistics and proofed the concept: Parmar C, Koschker AC, Stier R
Operating radiologist: Bokhari M

Availability of data and materials
Data route from the results of routine examinations of patients. Anonymized data sheet is available from
the authors (Stier C).

Financial support and sponsorship
None.

Conflicts of interest
All authors declared that there are no conflicts of interest.

Ethical approval and consent to participate
All procedures performed in this study involving human participants were in accordance with the ethical
standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration
and its later amendments or comparable ethical standards.

Consent for publication
Not applicable.

Copyright
© The Author(s) 2020.

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