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1.
Artigo em Inglês | MEDLINE | ID: mdl-21096126

RESUMO

Certification for healthcare institutions in Mexico is ruled by 2009 standards homologated with the Joint Commission International criteria. Nowadays, healthcare requires of medical equipment and devices, so it has become necessary to implement guidelines for its adequate management in order to reach the highest level of quality and safety at the lowest cost. The objective of this work was to develop a Medical and Laboratory Equipment Management Program, oriented to the improvement of quality, effectiveness and efficiency of the technological resources in order to meet the certification requirements. The result of this work allows to have an auto evaluation tool that focuses the efforts of the National Institute for Respiratory Diseases to the achievement of the new requirements established for the certification.


Assuntos
Certificação/normas , Equipamentos e Provisões/normas , Serviço Hospitalar de Engenharia e Manutenção/normas , Guias de Prática Clínica como Assunto , Garantia da Qualidade dos Cuidados de Saúde/organização & administração , México
2.
Appl Opt ; 38(5): 788-94, 1999 Feb 10.
Artigo em Inglês | MEDLINE | ID: mdl-18305677

RESUMO

A powerful technique for processing fringe-pattern images is based on Bayesian estimation theory with prior Markov random-field models. In this approach the solution of a processing problem is characterized as the minimizer of a cost function with terms that specify that the solution should be compatible with the available observations and terms that impose certain (prior) constraints on the solution. We show that, by the appropriate choice of these terms, one can use this approach in almost every processing step for accurate and robust interferogram demodulation and phase unwrapping.

3.
Appl Opt ; 38(10): 1934-41, 1999 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-18319748

RESUMO

Most interferogram demodulation techniques give the detected phase wrapped owing to the arctangent function involved in the final step of the demodulation process. To obtain a continuous detected phase, an unwrapping process must be performed. Here we propose a phase-unwrapping technique based on a regularized phase-tracking (RPT) system. Phase unwrapping is achieved in two steps. First, we obtain two phase-shifted fringe patterns from the demodulated wrapped phase (the sine and the cosine), then demodulate them by using the RPT technique. In the RPT technique the unwrapping process is achieved simultaneously with the demodulation process so that the final goal of unwrapping is therefore achieved. The RPT method for unwrapping the phase is compared with the technique of least-squares integration of wrapped phase differences to outline the substantial noise robustness of the RPT technique.

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