PRE- AND POSTTREATMENT ULTRASONOGRAPHY OF THE THYROID GLAND IN HYPERTHYROID CATS

Virginie Barberet, Yseult Baeumlin, Olivier Taeymans, Luc Duchateau, Kathelijne Peremans, Ingrid van Hoek, Sylvie Daminet, Jimmy H. Saunders*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

12 Citations (Scopus)

Abstract

Ultrasonography is useful for assessing the morphology of the thyroid gland in hyperthyroid cats. Our aim was to describe the ultrasonographic changes of the thyroid gland in hyperthyroid cats after (131)I therapy. Ultrasonography was performed in 15 hyperthyroid cats at initial presentation and 6 months after (131)I using a multifrequency linear transducer set at 12 MHz. The following criteria were evaluated: length, width, height, volume, shape, homogeneity, and vascularity, using Power Doppler. Pretreatment, 10 cats had bilaterally abnormal thyroid lobes, four cats one abnormal lobe with the contralateral lobe being normal or reduced in size, and one cat with one normal lobe and one lobe not visible. Six months after (131)I therapy, there was a reduction in median volume from 819 to 210 mm(3), reduced rounding, reduced heterogeneity, and decreased vascularity. In conclusion, ultrasonography may be used to monitor thyroid changes in order to assess (131)I treatment response. Further studies are necessary to determine whether ultrasonography could contribute to the detection of a relapsing course of hyperthyroidism. (C) 2010 Veterinary Radiology & Ultrasound, Vol. 51, No. 3, 2010, pp 324-330.

Original languageEnglish
Pages (from-to)324-330
Number of pages7
JournalVeterinary Radiology and Ultrasound
Volume51
Issue number3
DOIs
Publication statusPublished - 2010

Keywords

  • feline
  • hyperthyroidism
  • radioiodine treatment
  • thyroid gland
  • ultrasonography
  • GRAVES-DISEASE
  • RADIOIODINE THERAPY
  • DOPPLER SONOGRAPHY
  • PARATHYROID-GLANDS
  • VOLUME MEASUREMENT
  • HYPOTHYROID DOGS
  • SCINTIGRAPHY
  • ULTRASOUND
  • COLOR
  • PRETREATMENT

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