B-mode and Doppler ultrasound imaging of the spleen with canine splenic torsion: a retrospective evaluation.
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 parenchyma with splenic torsion necessitates B-mode evaluation of the splenic veins for intraluminal echoes and spectral or color Doppler evaluation for absent velocity flow.
Saunders
H M
HM
Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia 19104-6010, USA.
Neath
P J
PJ
Brockman
D J
DJ
D000818:Animals; D001783:Blood Flow Velocity / Q000662:veterinary; D003251:Constriction, Pathologic / Q000000981:diagnostic imaging / Q000662:veterinary; D004283:Dog Diseases / Q000000981:diagnostic imaging*; D004285:Dogs; D005260:Female; D008297:Male; D016491:Peripheral Vascular Diseases / Q000000981:diagnostic imaging / Q000662:veterinary; D013154:Spleen / Q000000981:diagnostic imaging*; D013158:Splenic Diseases / Q000000981:diagnostic imaging / Q000662:veterinary*; D013162:Splenic Vein / Q000000981:diagnostic imaging; D013163:Splenomegaly / Q000000981:diagnostic imaging / Q000662:veterinary; D013927:Thrombosis / Q000000981:diagnostic imaging / Q000662:veterinary; D014102:Torsion Abnormality / Q000000981:diagnostic imaging / Q000662:veterinary; D018608:Ultrasonography, Doppler / Q000662:veterinary*; D018615:Ultrasonography, Doppler, Color / Q000662:veterinary