Saide Jorge Calil

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A microprocessor-controlled system for detecting minor flow disturbances in blood vessels is described. The system is composed of a multigated pulsed Doppler ultrasonic velocimeter (MAVIS) and an 8085 microprocessor acting as an interface for a signal processing system and/or a storage system. A minimum-particle-velocity method is used to extract. Doppler(More)
The paper details the specification of an ultrasonic Doppler flowmeter intended for perivascular application and describes the elements of the design of an ultrasonic blood flow transducer. An optimised design is outlined for probes to be used on vessels in the range 5–12 mm. The design is based on the use of continuous-wave Doppler techniques and(More)
It is estimated that 20-40% of all existing healthcare equipment in Brazil is not working because of a lack of service, parts, or supplies, or because it has not been installed. Traditionally, equipment goes completely unattended until a complete failure occurs. Then, it sits idle, paralyzing those services provided by it, until its owner gathers enough(More)
  • S J Calil
  • 1994
The process of acquiring medical equipments in Brazil and other Latin American countries is a continuing learning process. Several conditions in the acquisition contract have to be established by the buyer, since the consumer protection law is nonexistent or not respected by some vendors. Furthermore, few countries have laboratories for testing the(More)
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