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The effect of recumbency position on the ultrasound measurement of the canine adrenal gland in non-adrenal gland illness

Authors Rose AM, Johnstone T, Finch S, Beck C

Received 9 August 2017

Accepted for publication 29 September 2017

Published 8 November 2017 Volume 2017:8 Pages 87—96

DOI https://doi.org/10.2147/VMRR.S148725

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 2

Editor who approved publication: Professor Young Lyoo


Anne Marie Rose,1 Thurid Johnstone,1,2 Sue Finch,3 Cathy Beck1

1U-Vet Animal Hospital Werribee, The University of Melbourne, 2TRACTS Translational Research and Clinical Trial Study Group, The University of Melbourne, 3Statistical Consulting Centre, School of Mathematics and Statistics, The University of Melbourne, Melbourne, VIC, Australia

Abstract: Abdominal ultrasound is frequently used to assess the canine adrenal gland (AG) and subjective and objective features of normal AGs have been described. The effect of the dogs’ recumbency position on the accuracy of AG measurement acquisition is not known. This prospective study, performed in dogs with non-adrenal illness, compared ultrasonographic AG measurements made in dogs placed in dorsal recumbency with those made in left or right lateral recumbency. AG length, height and width measurements made in the longitudinal image plane, and height and width measurements from the transverse image plane were assessed. The level and limits of agreement between the dorsal and lateral recumbency for each of the measurements were determined using the Bland–Altman analysis. The measurement with the best agreement between the dorsal and lateral recumbency was the caudal pole thickness (CPT) from the longitudinal image plane. Agreement between lateral and dorsal recumbency was poorer for the measurements derived from the transverse image plane and poorest for measurements of AG length in the longitudinal plane. This study demonstrates that there is some difference in the measurements acquired in dorsal compared with lateral recumbency; however, the difference is small for the CPT from the longitudinal plane. This finding suggests that the CPT from the longitudinal image plane is the most reliable measurement in terms of agreement between dorsal and lateral recumbency in dogs with non-AG illness.

Keywords:
adrenal glands, ultrasonography, normal, dog, recumbency

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