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PRE‐ AND POSTTREATMENT ULTRASONOGRAPHY OF THE THYROID GLAND IN HYPERTHYROID CATS
Author(s) -
BARBERET VIRGINIE,
BAEUMLIN YSEULT,
TAEYMANS OLIVIER,
DUCHATEAU LUC,
PEREMANS KATHELIJNE,
VAN HOEK INGRID,
DAMINET SYLVIE,
SAUNDERS JIMMY H.
Publication year - 2010
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.2009.01656.x
Subject(s) - medicine , thyroid , vascularity , cats , ultrasonography , echogenicity , radiology , lobe , nuclear medicine , pathology
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.