Uso do doppler no diagnóstico de torção esplênica em cães

B-MODE AND DOPPLER ULTRASOUND IMAGING OF THE SPLEEN WITH CANINE SPLENIC TORSION: A RETROSPECTIVE EVALUATION

1. H. Mark Saunders VMD, MS^*, 
2. Prudence J. Neath BSc, BVetMed, 
3. Daniel J. Brockman BVSc

Article first published online: 23 MAY 2005

DOI: 10.1111/j.1740-8261.1998.tb01619.x

Issue

Veterinary Radiology & Ultrasound

Volume 39, Issue 4, pages 349–353, July 1998

Additional Information(Show All)

Keywords:

• canine;
• splenic torsion;
• venous thrombosis;
• ultrasound;
• Doppler

The ultrasonographic appearance of splenic torsion has been described; the splenic parenchyma can be normal, hypoechoic or anechoic with interspersed linear echoes (coarse/“lacy” appearance). The ultrasonographic parenchymal appearance of 15 dogs in this report with splenic torsion varied: mottled hypoechoic regions (n=2), diffusely hypoechoic (n=11) and normal (n=2). Because splenic torsion causes vascular congestion due to splenic vein compression and eventual thrombosis, visible splenic vein intraluminal echogenicities compatible with thrombi were seen in 13 dogs using B-mode. Using spectral Doppler and color Doppler imaging of the splenic veins, no measurable flow velocities were detected in any of the 15 dogs. The varied B-mode ultrasonographic appearance of the splenic veins for intraluminal echoes and spectral or color Doppler evaluation for absent velocity flow.