Factors affecting the arterial distension waveform derived from tissue Doppler imaging (TDI): an in vitro study on precision.
Ultrasound Med Biol
; 33(7): 1123-31, 2007 Jul.
Article
em En
| MEDLINE
| ID: mdl-17434666
ABSTRACT
An investigation was made into the effect of acquisition parameters on the distension waveform estimated from tissue Doppler imaging (TDI). Physiological distension waveforms were generated using a compliant wall phantom. Distensions derived over a range of scanning geometries and transducer pressures were compared with those obtained in optimised scanning conditions. The estimated maximum distension decreased with scanning depth by 7% between 20 mm and 44 mm below the phantom surface, with an increase in transducer-vessel angle (by 22% from 0 degrees to 24 degrees ) and with a decrease in scan plane-vessel coincidence (by 34% from coincidence to 2 mm from the vessel central axis). An increase with transducer pressure was observed (by 20% from contact to high exerted pressure).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Artérias
/
Ultrassonografia Doppler
Limite:
Humans
Idioma:
En
Revista:
Ultrasound Med Biol
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Reino Unido