Today's Veterinary Practice

SEP-OCT 2018

Today's Veterinary Practice provides comprehensive information to keep every small animal practitioner up to date on companion animal medicine and surgery as well as practice building and management.

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todaysveterinarypractice.com SEPTEMBER/OCTOBER 2018 51 INSIGHTS CLINICAL CLINICAL INSIGHTS Most abdominal organs have distinctive ultrasonographic characteristics in dogs and cats, including size, shape, echogenicity, echotexture, and localization specific to the normal anatomy in the given species. TABLE 1 describes the expected normal measurements of canine and feline abdominal organs. 1–10 For greater detail on each organ, please refer to the relevant previous Imaging Essentials articles on todaysveterinarypractice.com. LIVER The liver is composed of the right lateral, right medial, left lateral, left medial, quadrate, and caudate lobes; the caudate lobe is made of the caudate and papillary processes. Ultrasonographically, the lobes cannot be differentiated. Instead, the liver appears as one contiguous structure containing normally branching hepatic portal veins. A normal-appearing liver does not exclude infiltrative disease in dogs or cats. 11 Ultrasonographic Differences Between Dogs and Cats Elizabeth Huynh, DVM Erin G. Porter, DVM, DACVR Clifford R. Berry, DVM, DACVR, University of Florida IMAGING ESSENTIALS Figure 1. (A) Long-axis view of the canine liver. The echotexture and echogenicity of the liver are normal with distinct portal vein walls (hyperechoic walls) and hepatic veins (isoechoic walls). The curvilinear hyperechoic line demarcating the cranial periphery of the liver, in the far field, is the reflective lung/diaphragm—liver interface. (B) Long-axis view of the feline liver. Note the large isoechoic falciform ligament fat in the near field (red bar) with an echogenic line delineating the start of the hepatic parenchyma. A B Welcome to our series of articles on small animal abdominal ultrasonography. The initial articles provided an overview of basic ultrasonography principles and a discussion about how to perform a systematic scan of the abdomen. The rest of the series discusses ultrasound evaluation of specific abdominal organs/systems. Read the other small animal abdominal ultrasonography articles published in Today's Veterinary Practice at todaysveterinarypractice.com .

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