An improved signal processor for the ultrasonic dimension gauge.
Cardiovasc Res
; 14(8): 490-4, 1980 Aug.
Article
en En
| MEDLINE
| ID: mdl-7438151
ABSTRACT
The flip-flop producing a pulse proportional to the transit time of an ultrasonic burst between two piezoelectric crystals was often reset by transmission artefacts in sonomicrometers. A design improvement was made. The insertion of two monostable vibrators and one nand gate corrected the resetting caused by transmission artefacts. The new design produced a flip-flop pulse that was proportional to the transit time of the ultrasonic burst through the aorta. Ascending aortic diameter was monitored in unanaesthetised dogs for 6 to 8 weeks using the new design.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Aorta
/
Ultrasonido
/
Ultrasonografía
Tipo de estudio:
Diagnostic_studies
Límite:
Animals
Idioma:
En
Revista:
Cardiovasc Res
Año:
1980
Tipo del documento:
Article