Alterações senis do encéfalo de caninos: aspectos imaginológicos

• Autor(a) principal: Babicsak, Viviam Rocco [UNESP]
• Data de Publicação: 2013
• Outros Autores: Vulcano, Luiz Carlos [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.fmvz.unesp.br/rvz/index.php/rvz/article/view/419; http://hdl.handle.net/11449/141242
• topic: Aging; Brain; Computed tomography; Dog; Magnetic resonance imaging; Cerebro; Envejecimiento; Perro; Resonancia magnética; Tomografía computadorizada; Cão; Encéfalo; Envelhecimento; Ressonância magnética; Tomografia computadorizada

Studies related to the verification of the aging changes in the brain of dogs have become very important due to the growing medical care of elderly dogs. The determination of the findings in a normal aging brain enables the identification of abnormalities in this process. In normal condition, there are volumetric reduction of several brain regions associated with widening of cerebral sulci; mild to moderate dilatation of the lateral ventricles; reduction in the height of the hippocampus and enlargement of the temporal horns. Decrease in the attenuation of white and gray matter as well as changes in intensity can also be observed in the brain images by computed tomography and magnetic resonance imaging, respectively, in elderly patients. In the latter imaging modality, hyperintense areas on T2-weighted and hypointense areas on T1- weighted images have already been described in the brain of humans and dogs, respectively. In these patients, an increase in the frequency of these lesions occurs with advancing age.