Sonographic observations of the gastroduodenal junction of dogs

A. Agut From the Departments of Veterinary Clinical Science (Agut, Wood) and Animal Science (Martin), University of Sydney, NSW 2006, Australia.

Search for other papers by A. Agut in
Current site
Google Scholar
PubMed
Close
 DVM, PhD
,
A. K. W. Wood From the Departments of Veterinary Clinical Science (Agut, Wood) and Animal Science (Martin), University of Sydney, NSW 2006, Australia.

Search for other papers by A. K. W. Wood in
Current site
Google Scholar
PubMed
Close
 MVS, PhD
, and
I. C. A. Martin From the Departments of Veterinary Clinical Science (Agut, Wood) and Animal Science (Martin), University of Sydney, NSW 2006, Australia.

Search for other papers by I. C. A. Martin in
Current site
Google Scholar
PubMed
Close
 BVS, PhD

Click on author name to view affiliation information

Abstract

Objectives

To determine the sonographic dimensions and an imaging protocol for the pyloric region of the normal canine stomach, and whether sonography could be used to demonstrate antroduodenal motility.

Animals

20 clinically normal, mixed-breed dogs (mean ± SD, 15.1 ± 7.1 kg).

Procedure

In vitro sonographic observations of the gastroduodenal junction were made after each had been mounted on an acrylic rack placed in an organ bath. The in vivo studies were performed in anesthetized dogs.

Results

The wall of the pyloric antrum was 4 to 5 mm thick, that of the pylorus was 3 to 4 mm thick, and that of the cranial part of the duodenum was 2 to 3 mm thick. The pyloric canal had a length of 16 to 17 mm and overall in vivo diameter of 22 mm, and the muscular part of its wall was 2 to 3 mm thick. In vivo sonographic images were best made with the dog in dorsal recumbency, tilted 30° to the right-the feasibility study clearly demonstrated the form and function of antroduodenal motility, including gastric and duodenal peristalsis, opening and closing of the pyloric canal, and duodenogastric reflux of fluid and gas.

Conclusions and Clinical Relevance

The use of a routine imaging protocol, accompanied by mensuration of the gastroduodenal junction, will permit an opinion to be given as to whether the structure and function of the region are normal or whether pathologic change exists. (Am J Vet Res 1996;57:1266-1273)

Abstract

Objectives

To determine the sonographic dimensions and an imaging protocol for the pyloric region of the normal canine stomach, and whether sonography could be used to demonstrate antroduodenal motility.

Animals

20 clinically normal, mixed-breed dogs (mean ± SD, 15.1 ± 7.1 kg).

Procedure

In vitro sonographic observations of the gastroduodenal junction were made after each had been mounted on an acrylic rack placed in an organ bath. The in vivo studies were performed in anesthetized dogs.

Results

The wall of the pyloric antrum was 4 to 5 mm thick, that of the pylorus was 3 to 4 mm thick, and that of the cranial part of the duodenum was 2 to 3 mm thick. The pyloric canal had a length of 16 to 17 mm and overall in vivo diameter of 22 mm, and the muscular part of its wall was 2 to 3 mm thick. In vivo sonographic images were best made with the dog in dorsal recumbency, tilted 30° to the right-the feasibility study clearly demonstrated the form and function of antroduodenal motility, including gastric and duodenal peristalsis, opening and closing of the pyloric canal, and duodenogastric reflux of fluid and gas.

Conclusions and Clinical Relevance

The use of a routine imaging protocol, accompanied by mensuration of the gastroduodenal junction, will permit an opinion to be given as to whether the structure and function of the region are normal or whether pathologic change exists. (Am J Vet Res 1996;57:1266-1273)

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 55 55 7
PDF Downloads 39 39 4
Advertisement