Data/hora: 12/06/2024 09:36:16

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 29/05/2018
Data da última atualização: | 29/05/2018
Autoria: | SILVA, E. G.; PESSOA, G. T.; MOURA, L. S.; GUERRA, P. C.; RODRIGUES, R. P. S.; SOUSA, F. C. A.; AMBRÓSIO, C. E.; ALVES, F. R.
Afiliação: | Elzivânia G. Silva, Pós-Graduação em Ciência Animal/Universidade Federal do Piauí - UFPI; Gerson T. Pessoa, Serviço de Diagnóstico por Imagem do Hospital Veterinário Universitário/UFPI; Laecio S. Moura, Pós-Graduação em Ciência Animal/Universidade Federal do Piauí - UFPI; Porfírio C. Guerra, Departamento das Clínicas/Universidade Estadual do Maranhão - UEMA; Renan P. S. Rodrigues, Pós-Graduação em Ciência Animal/Universidade Federal do Piauí - UFPI; Francisco C. A. Sousa, Departamento de Medicina/Universidade Estadual do Piauí - UESPI; Carlos E. Ambrósio, Departamento de Medicina Veterinária/Universidade de São Paulo - USP; Flávio R. Alves, Departamento de Morfofisiologia Veterinária/UFPI.
Título: | Biometric, B-mode and color Doppler ultrasound assessment of eyes in healthy dogs.
Ano de publicação: | 2018
Fonte/Imprenta: | Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 38, n. 3, p. 565-571, março, 2018
Idioma: | Inglês
Notas: | Título em português: Avaliação biométrica, ultrassonográfica em modo-B e por Doppler colorido ocular de cães hígidos.
Conteúdo: | B-scan ultrasonography is an important diagnostic tool that allows characterization of internal organ anatomy and, when complemented by Doppler ultrasound, allows vascular hemodynamic assessment, increasing the diagnostic accuracy. Thus, the aim of the present study was the B-scan ultrasound characterization and measurement of the eyeball segments and assessment of the external ophthalmic artery by color and pulsed Doppler. Sixty eyeballs were assessed from 30 dogs of different breeds using an 8.5MHz microconvex transductor. First, biometry was performed by B-scan of the following segments: axial length (M1), anterior chamber depth (M2), lens thickness (M3), lens length (M4), vitreous chamber depth (M5), optical disc length (M6) and optic nerve diameter (M7). Colored Doppler identified the external ophthalmic article and pulsed Doppler assessed its flow, and the following were measured: systolic peak velocity (VPS), final diastolic velocity (VDF), resistivity index (IR) and pulse index (IP). No statistical difference was observed for the biometric values of the eye segments between the right and left eyes (p>0.05). The vitreous chamber depth (M5) was shown to be the biometric variable with greatest bilateral symmetry, varying from 0.79 to 0.87cm and 0.78 to 0.86cm for the right and left ye, respectively. The ophthalmic artery was visualized over the optic nerve towards the eyeball, with flow stained red. There was no significant statistical difference between the Doppler velocimetric values for the ophthalmic artery between the right and left eye of the animals assessed (p>0.05). The mean resistivity index (RI) showed average values equal to 0.63±0.03, bilaterally. The mean base velocity was 17.50cm/s and 18.18cm/s at the systolic peak and 6.21cm/s and 6.68cm/s at the end of the diastole, for the right and left eyes respectively. The anatomic, biometric and hemodynamic characterization using the ultrasound B-scan and the Doppler modalities permitted the ultrasonographic and Doppler velocimetric assessment of the eyeball components in dogs of different breeds, and it can be used in ophthalmic clinical routine to identify eye pathologies.
Palavras-Chave: | B-mode; Bulbo ocular; Cão hígido; Doppler colorido ocular; Doppler ultrasound; Doppler velocimetry; Dopplervelocimetria; Eyeball; Ultrassonografia.
Thesagro: | Biometria; Cão.
Thesaurus Nal: | Biometry; Dogs; Hemodynamics; Ophthalmology.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/177793/1/Biometric-B-mode-and-color-Doppler-ultrasound.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (62668-1) - UPE - AP - DD -  -  -  - DIS