Comparison of color Doppler sonography and radionuclide imaging in different degrees of torsion in rabbit testes

Academic Radiology
D P FrushC A Sheldon

Abstract

We compared color Doppler sonography and radionuclide imaging in an animal model of variable torsion of the testes. The testes of 19 rabbits with unilateral 0 degree (nontorsion), 180 degrees, 360 degrees, or 540 degrees torsion and contralateral nontorsion were evaluated by sonography serially over 24 hr. Color Doppler sonography and radionuclide imaging at 24 hr were compared and correlated with pathology in a subset of testes. Nontorsion (n = 16 testes) and 540 degrees torsion (n = 7 testes) were always correctly diagnosed at 24 hr by color Doppler sonography and radionuclide imaging. Torsion at 180 degrees (n = 2) was indistinguishable from nontorsion. With 360 degrees torsion (n = 6 testes), four testes had reduced or absent flow with color Doppler sonography, whereas only one testis was abnormal with radionuclide imaging. Nontorsion and extreme torsion of rabbit testes are well documented by radionuclide imaging and color Doppler sonography. Torsion at 360 degrees can result in variable flow alterations that are better detected by color Doppler sonography than by radionuclide imaging.

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Citations

Jan 30, 2004·Academic Radiology·E Scott Pretorius, David A Roberts
Sep 16, 2003·Ultrasound Quarterly·Décio Prando
Nov 23, 2006·AJR. American Journal of Roentgenology·Anna R Nussbaum Blask, H Gil Rushton
Nov 6, 2013·Ultrasound in Medicine & Biology·Harriet J PaltielGregory T Clement
Jul 26, 2011·Emergency Medicine Clinics of North America·Jonathan E Davis, Michael Silverman
Aug 11, 2004·Emergency Medicine Clinics of North America·Michael Blaivas, Larry Brannam
Oct 24, 2008·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Scott CassarVikram S Dogra
Jul 13, 2012·Deutsches Ärzteblatt International·Patrick Günther, Iris Rübben

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