Myelography is a radiological contrast examination technique frequently used in the diagnosis of vertebral spine and spinal cord disorders. The procedure involves inserting a needle with subsequent injection of contrast medium, which delimits the spinal cord. The main indication is suspected spinal injuries not visualized on plain radiographs. Myelography is effective in the identification of the location of the lesion but is contraindicated in patients with infectious diseases or who have recently experienced trauma. Advantages of myelography are cost effectiveness in both the examination procedure and maintenance of equipment, and delivery of quality images, compared with other imaging methods in dogs. Disadvantages include a relatively long examination procedure, the need for general anesthesia, and the risk of seizures or death. The aim of this study was to characterize a population of dogs undergoing myelography according to the following factors: severity of injury, breed, age, sex, reproductive status, diet, weight, previous illnesses, vertebral region evaluated, lesion location in spinal cord or meninges, cause of radiographic signs, and possible complications. The database was created from information in medical records, and included 61 dogs with suspected disorders of the vertebral spine, spinal cord, and/or meninges that underwent myelography at the Unidade Hospitalar para Animais de Companhia of Pontifícia Universidade Católica do Paraná from January 2003 through December 2012. The results indicate that the most common degree of injury severity was Grade 2 (39.34% of the patients). The most prevalent breeds were mixed breed dogs (22.58%) and the dachshund (18.03%). Ages with higher frequency were 6 and 10 years (average, 7.6 years). According to sex and reproductive status, intact male (42.62%) and female (36.06%) dogs were most affected. The commercial (50.82%) and mixed (44.26%) diets were the most common diets. The body weight between 6 and 15 kg (37.70%) was the most significant. Most of the patients showed no previous diseases (73.77%). The thoracolumbar region was the most evaluated (47.22%). Most injuries were extramedullary (62.30%), and the most common cause was intervertebral disc disease (52.38%). The complications of myelography were not significant. It can be seen that the data in our environment tend to be similar to those of the national literature, but international literature is currently focusing on more sensitive tests such as CT and MRI. Key words: Myelography, vertebral spine, spinal cord, intervertebral disc disease in dogs ResumoA mielografia é utilizada no diagnóstico de doenças da coluna vertebral e medula espinhal. são suspeitas de lesões medulares não visualizadas em radiografias simples. Suas contraindicações são em pacientes com doenças infecciosas ou que sofreram trauma recente. Se comparada a outros métodos imaginológicos em cães, apresenta a vantagem de ter baixo custo do exame e de manutenção. Como desvantagem, apresenta maior tempo para a realização do exame,...

Intestinal gas results in low quality imaging in abdominal ultrasound in domestic animals. On dogs, suggested preparation protocols are varied and low studied. The aim of this work was comparing the efficacy between two preparations in improving the complete abdominal ultrasound exam and pancreas preview. 40 dogs were enrolled in this study. They were separated in two groups (NS diet: fasting; WS diet: fasting added to simethicone). The pancreas images were taken from left lateral decubitus. A score of one to three (1: bad, 2: fair and 3: good) measured separately the quality of the complete exam, left and right limbs and pancreatic body. In both treatments, there were results above 50% of good images of the complete exam and right limb of the pancreas. Otherwise, there were results above 90% of bad images of the right limb and pancreatic body. According to the fact of there is no statistically significant difference between the diets, as well submitted animals to the NS diet as the WS diet, all the results obtained from this work (bad or good images) could be acquired from any of both diets. The good abdominal exam preview as well submitted animals to the simethicone as those without the medication refute this medicine requirement to the abdominal ultrasound exam, but not to the evaluation of the left limb and pancreatic body.