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Thyroid imaging in the dog: current status and future directions.

O Taeymans¹, K Peremans, J H Saunders

¹Department of Medical Imaging, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium. Olivier.Taeymans@UGent.be

Journal of Veterinary Internal Medicine

|August 22, 2007

Summary

This review compares imaging techniques for common canine thyroid diseases. Ultrasonography and scintigraphy are most recommended, with CT and MRI showing promise for complex cases like thyroid cancer.

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Area of Science:

Veterinary Radiology
Canine Endocrinology
Diagnostic Imaging

Background:

Thyroid gland imaging is crucial for diagnosing canine pathologies.
Acquired primary hypothyroidism and thyroid neoplasia are common in dogs.
Current imaging modalities have varying diagnostic capabilities.

Purpose of the Study:

To review the advantages and disadvantages of radiography, ultrasonography, and nuclear medicine for canine thyroid diseases.
To explore the potential roles of computed tomography (CT) and magnetic resonance imaging (MRI) in canine thyroid imaging.
To suggest future directions for canine thyroid imaging based on human medical experience.

Main Methods:

Literature review of imaging modalities for canine thyroid conditions.
Analysis of radiography, ultrasonography, nuclear medicine (scintigraphy), CT, and MRI.
Comparison of diagnostic utility for hypothyroidism and neoplasia.

Main Results:

Ultrasonography and scintigraphy are the primary imaging modalities for canine thyroid abnormalities.
CT and MRI offer potential benefits in evaluating thyroid neoplasia extent, invasiveness, and metastasis.
Radiography has limited utility for these specific thyroid pathologies.

Conclusions:

Ultrasonography and scintigraphy are essential for diagnosing canine hypothyroidism and neoplasia.
Advanced imaging like CT and MRI are valuable for comprehensive staging of canine thyroid cancer.
Further research into advanced imaging techniques could enhance canine thyroid diagnostics.