Does probe frequency influence diagnostic accuracy in newborn hip ultrasound?
Ultrasound Med Biol
; 38(7): 1116-20, 2012 Jul.
Article
em En
| MEDLINE
| ID: mdl-22579539
ABSTRACT
Ultrasonography of the hip has gained wide acceptance as reliable method for diagnosing developmental hip dysplasia in infants. This blinded study was conducted to investigate the influence of two linear probes with different frequency on diagnostic accuracy and reproducibility. In 206 consecutive newborns, the bony roof angle (α-angle) and cartilage roof angle (ß-angle) were assessed by three investigators according to Graf. The hips were measured twice both with a 7.5 MHz and a 12 MHz linear transducer (Sonoline G60S(®) ultrasound system; Siemens, Erlangen, Germany). Each investigator evaluated his sonograms 6 weeks later. Depending on the mean values for α-angle and ß-angle, the hips were classified. Reproducibility of the Graf classification was not found to be influenced. In two of three investigators, we observed significant improvement concerning variation of the ß-angle with the 12 MHz probe. The use of high-resolution transmitters may improve diagnostic accuracy in ultrasonography of the newborn's hip.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transdutores
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Aumento da Imagem
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Ultrassonografia
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Luxação Congênita de Quadril
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Articulação do Quadril
Tipo de estudo:
Diagnostic_studies
Limite:
Female
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Humans
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Infant
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Male
Idioma:
En
Revista:
Ultrasound Med Biol
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Alemanha