Calcinosis circumscripta in a dog

Calcinosis circumscripta is an uncommon syndrome of ectopic idiopathic, dystrophic, metastatic or iatrogenic mineralization characterized by deposition of calcium salts in soft tissues (Tafti et al., 2005). In this case, ultrasound was used to investigate a paindul swelling that progressed on the side of the neck of a 14-month-old Greyhounrd dog. Fine-needle aspirations were performed, […]

Muscular neoplasia in two dogs

Ultrasound can help detecting muscular masses such as the tumors in these two dogs. [annotated video, 1:52]

Left-divisional intrahepatic shunt in a dog

Intrahepatic congenital shunts can be subdivided into left-, central-, and right-divisional. That are typically found in large breed dogs, but can sometimes affect small breeds as in this case. The sonographic features of a left-divisional shunt – also known as patent ductus venosus – are described in this video. Contrast-enhancement CT was eventually performed in […]

The Liver and Portal System

In this video, Marc-André describes the anatomy of the hepatobiliary tract and portal system using 3D-reconstructed images obtained from a normal Beagle dog that was scanned with CT, with the corresponding ultrasound videoloops.[narrated and annotated video, 9:40]
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Traumatic diaphragmatic hernia

A left sided diaphragmatic hernia with displaced left side of the liver, gallbladder and omentum is presented on this video clip. [annotated video, 2:00]

Porcupine Quills -Shoulder region

Ultrasound can be used to locate porcupine quills that appear as double hyperechoic lines crossing muscles. Intra-operative ultrasound is a useful tool to assist and confirm removal. [annotated video, 2:17]

Refraction artifact

Refraction artifact happens when the ultrasound beam is deviated from its original track as it encounters a smooth, rounded structure. It results in an edge shadowing; examples are presented in this video clip.[annotated video, 1:09]
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Reverberation and ring down artifacts

Reverberation artifact appears as a succession of hyperechoic lines when the ultrasound waves encounter a highly reflective interface such as gas. Ring-down (due to resonance) is often encountered with gas while comet-tail (which is a reverberation artifact) artifact can be seen with metallic FB, surgical clips and mineralized concretions. They both display successive hyperechoic lines.[annotated […]
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Enhancement artifact

Enhancement artifact appears as a zone of increased echogenicity beyond a fluid-filled and hypo-attenuating structure. Examples of this artifacts are presented. [annotated video, 0:49]
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Using a systemic approach when scanning the abdomen

Effective scanning of the abdomen of dogs and cats requires a systematic approach that should be used consistently . This clip describes a standard approach in which all abdominal structures are examined in a specific order and discusses the benefits of intercostal windows. Patient prepration and imaging planes are also discussed. [narrated video, 9:55]
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