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Erschienen in: European Radiology 3/2016

01.03.2016 | Computed Tomography

An appraisal of the computed axial tomographic appearance of the human mesentery based on mesenteric contiguity from the duodenojejunal flexure to the mesorectal level

verfasst von: J. Calvin Coffey, Kevin Culligan, Leon G. Walsh, Rishab Sehgal, Colum Dunne, Deirdre McGrath, Dara Walsh, Michael Moore, Marie Staunton, Timothy Scanlon, Catherine Dewhurst, Bryan Kenny, Conor O’Riordan, Julie M. O’Brien, Fabio Quondamatteo, Peter Dockery

Erschienen in: European Radiology | Ausgabe 3/2016

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Abstract

Objective

The human mesentery is now regarded as contiguous from the duodenojejunal (DJ) to anorectal level. This interpretation prompts re-appraisal of computed tomography (CT) images of the mesentery.

Methods

A digital model and reference atlas of the mesentery were generated using the full-colour data set of the Visible Human Project (VHP). Seventy one normal abdominal CT images were examined to identify mesenteric regions. CT appearances were correlated with cadaveric and histological appearances at corresponding levels.

Results

Ascending, descending and sigmoid mesocolons were identifiable in 75 %, 86 % and 88 % of the CTs, respectively. Flexural contiguity was evident in 66 %, 68 %, 71 % and 80 % for the ileocaecal, hepatic, splenic and rectosigmoid flexures, respectively. A posterior mesocolic boundary corresponding to the anterior renal fascia was evident in 40 % and 54 % of cases on the right and left, respectively. The anterior pararenal space (in front of the boundary) corresponded to the mesocolon.

Conclusions

Using the VHP, a mesenteric digital model and reference atlas were developed. This enabled re-appraisal of CT images of the mesentery, in which contiguous flexural and non-flexural mesenteric regions were repeatedly identifiable. The anterior pararenal space corresponded to the mesocolon.

Key Points

The Visible Human Project (VHP) allows direct identification of mesenteric structures.
Correlating CT and VHP allows identification of flexural and non-flexural mesenteric components.
Radiologic appearance of intraperitoneal structures is assessed, starting from a mesenteric platform.
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Metadaten
Titel
An appraisal of the computed axial tomographic appearance of the human mesentery based on mesenteric contiguity from the duodenojejunal flexure to the mesorectal level
verfasst von
J. Calvin Coffey
Kevin Culligan
Leon G. Walsh
Rishab Sehgal
Colum Dunne
Deirdre McGrath
Dara Walsh
Michael Moore
Marie Staunton
Timothy Scanlon
Catherine Dewhurst
Bryan Kenny
Conor O’Riordan
Julie M. O’Brien
Fabio Quondamatteo
Peter Dockery
Publikationsdatum
01.03.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
European Radiology / Ausgabe 3/2016
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-015-3883-0

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