1.
Cardiovasc Res
; 14(8): 490-4, 1980 Aug.
Artigo
em Inglês
| MEDLINE
| ID: mdl-7438151
RESUMO
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.
Assuntos
Aorta/anatomia & histologia , Ultrassom/instrumentação , Ultrassonografia , Animais , Biometria , Cães , Eletrônica Médica , Feminino , Masculino , Monitorização Fisiológica/instrumentação
2.
Physiol Behav
; 14(5): 659-62, 1975 May.
Artigo
em Inglês
| MEDLINE
| ID: mdl-806086
3.
Med Biol Eng
; 11(5): 656-7, 1973 Sep.
Artigo
em Inglês
| MEDLINE
| ID: mdl-4788895
4.
Physiol Behav
; 7(1): 121-2, 1971 Jul.
Artigo
em Inglês
| MEDLINE
| ID: mdl-5149710