Comparison of contrast-enhanced multidetector computed tomography angiography and splenoportography for the evaluation of portosystemic-shunt occlusion after cellophane banding in dogs.

Schaub, Sebastian; Hartmann, Antje; Schwarz, Tobias; Kemper, Karsten; Pueckler, Kerstin H; Schneider, Matthias A (2016). Comparison of contrast-enhanced multidetector computed tomography angiography and splenoportography for the evaluation of portosystemic-shunt occlusion after cellophane banding in dogs. BMC veterinary research, 12(1), p. 283. BioMed Central 10.1186/s12917-016-0910-6

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BACKGROUND Many patients with a congenital extrahepatic portosystemic shunt (PSS) do not tolerate an immediate shunt closure. Therefore, slow progressive techniques were developed. To evaluate the success of shunt closure diagnostic imaging is essential to identify possible residual blood flow through the shunt vessel. There is a lack of information about the reliability of computed tomography angiography (CTA) for evaluating residual flow through a PSS after treatment. The purpose of this prospective study was to compare the results of CTA with splenoportography. Three months after cellophane banding CTA and splenoportography were performed in 20 dogs and reviewed by three independent examiners, respectively. In both imaging modalities the presences of a residual shunt was judged as present or absent and the extent of visibility of portal vasculature was recorded. RESULTS Based on the evaluation of the splenoportography residual flow through shunt was present in 6 dogs. The classification of residual shunt present or absent showed a substantial to perfect agreement (κ = 0.65-1.00) between the observers in splenoportography and a slight to moderate agreement (κ = 0.11-0.51) for CTA. Sensitivity and specificity varied between 0.50 and 1.00 and 0.57-0.85, respectively. Significant correlation between CTA and splenoportography for the classification of residual shunt was present only in one observer but not in the other two. CONCLUSION More studies were classified as residual shunt positive with CTA compared to splenoportography. It remains unclear which methods do reflect reality better and thus which method is superior. The greater inter-rater agreement for splenoportography suggests a greater reliability of this technique.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV)
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Clinical Radiology

UniBE Contributor:

Hartmann, Antje

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1746-6148

Publisher:

BioMed Central

Language:

English

Submitter:

Aiko Matter

Date Deposited:

06 Jun 2017 14:19

Last Modified:

11 Jun 2017 02:14

Publisher DOI:

10.1186/s12917-016-0910-6

PubMed ID:

27938359

Uncontrolled Keywords:

Angiography; Computed tomography; Extrahepatic portosystemic shunt; Splenoportography

BORIS DOI:

10.7892/boris.93472

URI:

https://boris.unibe.ch/id/eprint/93472

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