These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: An improved signal processor for the ultrasonic dimension gauge.
    Author: Sia JB, Pace DG, Osborne MW, Zanko MT, Kovzelove F.
    Journal: Cardiovasc Res; 1980 Aug; 14(8):490-4. PubMed ID: 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.
    [Abstract] [Full Text] [Related] [New Search]