RESUMO
Real-time elastography is a new ultrasonographic technology for measurement of tissue elasticity. Malignant lesions in the human breast, prostate, thyroid and lymph nodes show significantly reduced elasticity. The present study investigated the use of real-time elastography in the spleen of 22 dogs (8 benign and 6 malignant nodules, and 8 normal spleens) and results were compared to contrast-enhanced ultrasound findings. In summary, real-time elastography was neither able to differentiate benign from malignant splenic lesions, nor normal from diseased splenic tissue. No significant associations with contrast-enhanced ultrasound results were found. Real-time elastography, therefore, does not appear a useful tool for the differentiation of splenic nodules in the dog.
L'élastographie en temps réel est une nouvelle technique d'échographie qui permet de déterminer l'élasticité tissulaire. Chez l'homme, les nodules malins dans le sein, la prostate, la thyroïde et les ganglions lymphatiques présentent une élasticité significativement réduite. Dans la présente étude, on a utilisé l'élastographie en temps réel de la rate chez 22 chiens (8 nodules bénins et 6 malins, 8 rates normales). Les nodules bénins n'ont pas pu être différenciés des malins, ni le tissu splénique modifié du tissu normal. Les résultats n'étaient pas corrélés avec ceux de l'échographie renforcée par un moyen de contraste. Il ne semble donc pas que l'élastographie en temps réel permette la différenciation des nodules spléniques chez le chien.
Assuntos
Doenças do Cão/diagnóstico por imagem , Técnicas de Imagem por Elasticidade/veterinária , Baço/diagnóstico por imagem , Neoplasias Esplênicas/veterinária , Animais , Biópsia por Agulha Fina/veterinária , Estudos de Casos e Controles , Diagnóstico Diferencial , Cães , Feminino , Masculino , Estudos Prospectivos , Baço/patologia , Esplenopatias/diagnóstico por imagem , Esplenopatias/veterinária , Neoplasias Esplênicas/diagnóstico por imagemRESUMO
Assessment of gestational age and parturition date prediction is a challenging, yet common task in clinical management of the pregnant bitch or queen. Knowing the approximate parturition date is essential for a thorough pregnancy monitoring. Radiographic and ultrasonographic methods are suitable in bitches and queens. In the bitch, moreover, ovulation timing by means of LH or progesterone assay, determination of onset of vaginal dioestrus by means of examination of vaginal cytology, and recognition of impending parturition by monitoring prepartal progesterone levels and body temperature variation are practical methods. A combination of different methods increases the accuracy of parturition date prediction.