Normal Variation in Size of the Lateral Ventricles of the Labrador Retriever Dog as Assessed by Magnetic Resonance Imaging

Haan, Constance E. De; Kraft, Susan L.; Gavin, Patrick R.; Wendling, Lyle R.; Griebenow, M.L.

doi:10.1111/j.1740-8261.1994.tb00191.x

Cited by 43 publications

(35 citation statements)

References 11 publications

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“…Inducing a brain adaptation to the vault architecture required compression in the dorsoventral axis, thus increasing the difficulty of identifying different brain regional structures. According to Schroeder et al, [36] brachycephalic breeds have larger LVVs than dolichocephalic and mesocephalic breeds [36][37][38][39][40][41]. Based on our results, age appears to influence the LVV in a statistically significant way, which Sue et al also found [42].…”

Section: Discussionsupporting

confidence: 65%

“…However, asymmetries between both LVVs were found, with the left lateral ventricle always larger than the right lateral ventricle. The asymmetry of the lateral ventricles is considered normal in healthy dogs up to a certain value [36,37,39,48,49]. In a study using Labrador retrievers, De Haan et al [37] estimated an asymmetry of 31%.…”

Section: Discussionmentioning

confidence: 99%

“…The asymmetry of the lateral ventricles is considered normal in healthy dogs up to a certain value [36,37,39,48,49]. In a study using Labrador retrievers, De Haan et al [37] estimated an asymmetry of 31%. This is similar to the results in Winchester et al [50] which used US to confirm the presence of asymmetry in the lateral ventricles in humans.…”

Section: Discussionmentioning

confidence: 99%

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Comparison between ultrasonography and computed tomography images for planning and neuronavigation in brain surgeries in dogs as an animal model

Carreira

Universitário²,

Ajuda³

2015

Glob Anesth Perioper Med

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Objectives: The brain's inner cavities containing cerebrospinal fluid are referred to as ventricles, which are easily identified in an ultrasonographic (US) image as hypoecogenic and in computed tomography (CT) as hypodense. Imaging has become essential to planning and neuronavigation in brain surgeries, serving to guide the surgeon through the organ. The study aimed to 1) compare ultrasonography (US) and computed tomography (CT) measurements of lateral ventricle volumes (LVV) in dogs to determine their level of agreement and 2) understand their influence on surgical planning and neuronavigation. Materials and methods:Measurements were taken from a sample of 24 LVVs from 12 brachycephalic dog cadavers. First, 2 mm slices of the dogs' brains were scanned with the CT machine. The US brain scan technique was performed using a transducer of 7.5 MHz over the brain after craniotomy placement. This procedure was useful in simulating the brain neuronavigation technique in a two-dimensional scenario. A P value less than 0.05 was defined as statistically significant. Results:A comparison of the US and CT images showing measurements of the right and left LVVs showed no statistically significant differences between the LVVs, allowing us to conclude that US is a reliable technique to planning and neuronavigation in brain surgeries. Conclusion:As a result US is of great value in the everyday practice and areas working with limited resources such as in veterinary medicine, or even in a zooubitquity context, since in some human's hospitals of developing countries or in some rural and remote areas, access to CT, magnetic resonance MR techniques, and neuronavigation systems are limited to point high-technology centers, unlike the sonography (US). Therefore, US it is a reliable technique to planning and neuronavigation in brain surgeries, thus promoting patient safety and surgeon success.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison between ultrasonography and computed tomography images for planning and neuronavigation in brain surgeries in dogs as an animal model

Carreira

Universitário²,

Ajuda³

2015

Glob Anesth Perioper Med

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“…However, the high prevalence of congenital and acquired hydrocephalus in beagles may affect these results (Cammermeyer, 1961). Asymmetry of the lateral ventricles was studied in male Labrador Retrievers (n = 62; BW = 35-50 kg) of unknown age using MRI (DeHaan et al, 1994). In this study only 39% of the subjects were found to have asymmetric lateral ventricles, without specifying which side was larger.…”

Section: Resultsmentioning

confidence: 88%

“…Asymmetry of the lateral ventricles was studied in different breeds (Labrador Retrievers, DeHaan et al, 1994;English Bulldogs, Ryan et al, 2014). However, the classification of symmetry was based on the subjective observation of MRI images; therefore slight levels of asymmetry may have been evaluated inaccurately.…”

mentioning

confidence: 99%

Linear relationship found by magnetic resonance imaging between cerebrospinal fluid volume and body weight in dogs

Reinitz

Bajzik

Garamvölgyi

et al. 2017

Acta Veterinaria Hungarica

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Despite numerous studies on cerebrospinal fluid (CSF) and its importance during hydrocephalus or myelography, no reliable values exist about its overall volume in dogs. In this study, our aim was to measure the intracranial (IC) volume of CSF in dogs and assess its possible relationship with body size and the symmetry of the lateral ventricles. We ran a 3D magnetic resonance imaging (MRI) sequence on the central nervous system of 12 healthy, male mongrel dogs between 3-5 years of age and 7.5-35.0 kg body weight. A validated semiautomatic segmentation protocol was implemented to segment the CSF and measure its volume. Values for the volume of the ventricular compartment were between 0.97 and 2.94 ml, with 62.1 ± 11.7% in the lateral ventricles, 17.6 ± 4.9% in the third ventricle, 4.9 ± 1.6% in the aqueductus mesencephali and 15.5 ± 6.6% in the fourth ventricle. In 11 cases a significant asymmetry was found between the lateral ventricles. The results suggest that it may be normal for a dog to have one of the lateral ventricles 1.5 times larger than the other. The correlation between body weight and CSF volume was linear, indicating that the current dosage protocols for myelography, based on a hypothetical proportional relationship with body weight, may have to be revised.

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Cerebrospinal Fluid, the Meninges, and the Subarachnoid Space

Yaksh

2023

Neuraxial Therapeutics

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Normal Variation in Size of the Lateral Ventricles of the Labrador Retriever Dog as Assessed by Magnetic Resonance Imaging

Cited by 43 publications

References 11 publications

Comparison between ultrasonography and computed tomography images for planning and neuronavigation in brain surgeries in dogs as an animal model

Comparison between ultrasonography and computed tomography images for planning and neuronavigation in brain surgeries in dogs as an animal model

Linear relationship found by magnetic resonance imaging between cerebrospinal fluid volume and body weight in dogs

Cerebrospinal Fluid, the Meninges, and the Subarachnoid Space

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