Exploring brain perfusion in dogs with meningoencephalitis of unknown origin: A promising role for arterial spin labeling imaging.

Background: Arterial spin labeling (ASL) is a noninvasive brain perfusion magnetic resonance imaging (MRI) technique that has not been assessed in dogs with meningoencephalitis of unknown origin (MUO).

Hypothesis/objectives: Assess brain perfusion changes characteristics before and after medical treatment, and investigate the role of ASL perfusion in the diagnosis and prognosis of MUO in dogs.

Animals: Thirty-one dogs with presumed MUO.

Domestic ferrets (Mustela putorius furo) with cholecystitis commonly show hyperbilirubinemia and common bile duct dilation, gallbladder sludge, and gallbladder wall thickening on ultrasound.

Objective: To report clinical signs, biological anomalies, treatment, and outcome in domestic ferrets with cholecystitis, describe the ultrasonographic features of cholecystitis, and compare the ultrasonographic appearance of the hepatobiliary system between diseased and healthy ferrets.

Methods: 11 ferrets with confirmed cholecystitis and abdominal ultrasonography were retrospectively included. Ten healthy ferrets were prospectively recruited to undergo hepatobiliary abdominal ultrasonography.

Characteristics and diagnostic performance of nonechoplanar diffusion-weighted imaging in detecting canine tympanokeratoma (cholesteatoma).

Tympanokeratomas (cholesteatomas) are destructive keratinic masses of the middle ear that are often treated surgically. In humans, nonechoplanar (non-EP) diffusion-weighted (DW) MRI is efficient in diagnosing tympanokeratomas and differentiating recurrent tympanokeratomas from granulation or fibrous tissue after surgery. The objectives of this study were to (1) determine the characteristics of non-EP DWI of histologically or cytologically confirmed canine tympanokeratomas, (2) determine the performance of non-EP DW images, apparent diffusion coefficient (ADC) map and ADC values in discriminating between tympanokeratomas and other causes of otitis media in dogs, and (3) find an optimal ADC cut-off value.

Computed tomographic features of segmental aplasia of the caudal vena cava, portocaval shunt and Situs ambiguous in two dogs.

A 3-year-old crossbreed dog (case 1) and a 3-month-old German Shorthaired Pointer (case 2) were presented for acute signs of encephalopathy. A portosystemic shunt (PSS) was suspected based on clinical context and laboratory exam results and was confirmed on computed tomography (CT) angiography in both cases. A left-sided azygos (case 1) and right-sided azygos (case 2) continuation of an interrupted caudal vena cava (CVC) and a situs ambiguous (SA) were also observed and considered as incidental findings.

Epidemiological, clinical, radiographic, echocardiographic findings and outcome in client-owned guinea pigs (Cavia porcellus) with cardiac disease: 80 cases (2010-2021).

Objective: To characterize epidemiological, clinical, radiographic, and echocardiographic features of cardiac diseases in guinea pigs examined at a referral exotics center.

Animals: 80 guinea pigs.

Procedures: Medical records of guinea pigs that had echocardiography performed between June 2010 and January 2021 were reviewed.