Canis ISSN: 2398-2942

Ultrasonography: GI system

Contributor(s): Alison Dickie

Introduction

Uses

Advantages

  • Low cost.
  • Non-invasive.
  • Straightforward.
  • Short time requirement.
  • Rarely requires sedation.
  • No known biological risk.
  • Allows ultrasound guided fine needle aspiration or biopsy.
    Time requirement will reduce with operator experience.

Disadvantages

  • Will require patient's coat to be clipped.
  • Normal sonographic appearance does not exclude disease.
  • Abnormal sonographic appearance does not always indicate significant disease.
  • Similar sonographic appearance with different diseases.

Potential problems

  • Poor transducer-skin contact:
    • Inadequate clipping.
    • Insufficient coupling medium.
  • Inadequate patient restraint.
  • Operator inexperience.
  • Intraluminal gas interfering with image quality.
  • Ultrasound should be performed before administration of contrast, eg barium.

Alternatives

Equipment

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Patient preparation

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Technique

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Normal Anatomy

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Abnormalities

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Further Reading

Publications

Refereed papers

  • Recent references from VetMed Resource and PubMed.
  • Boysen S R, Tidwell A S & Penninck D G (2003) Ultrasonographic findings in dogs and cats with gastrointestinal perforation. Vet Radiol Ultrasound 44(5), 556-564 PubMed.
  • Kull P A, Hess R S, Craig L E, Saunders H M & Washabau R J (2001) Clinical, clinicopathological, radiographic and ultrasonographic characteristics of intestinal lymphangiectasia in dogs 17 cases (1996-1998). JAVMA 219, 197-202 PubMed.
  • Manczur F & Voros K (2000) Gastrointestinal ultrasonography of the dog: a review of 265 cases (1996-1998). Acta Vet Hung 48(1), 9-21 PubMed.
  • Penninck D G, Nyland T G, Kerr L & Fisher P E (1990) Ultrasonographic evaluation of gastrointestinal diseases in small animals. Vet Radiol 31, 134-141.
  • Penninck D G, Nyland T G, Fisher P E & Kerr L Y (1989) Ultrasonography of the normal canine gastrointestinal tract. Vet Radiol 30, 272-276.

Other sources of information

  • Homco L D (1996) Gastrointestinal tract. In: Small Animal Ultrasound. Ed: Green R W. Lippincott-Raven, Philadelphia. pp 149-175.
  • Penninck D G (1995) Ultrasonography of the gastrointestinal tract. In: Veterinary Diagnostic Ultrasound.Eds: Nyland T G & Mattoon J S. WB Saunders Company, Philadelphia. pp 125-140.


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