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Aim: To assess the role of Magnetic resonance imaging (MRI) and pelvic organ prolapse quantification (POPQ) system in the evaluation of female pelvic organ prolapse. Design: Prospective study. Setting: TantaUniversityHospital. Patients: The study was carried out on 60 patients having clinical manifestations suggesting pelvic floor weakness. Intervention: All the patients were subjected to history taking, physical examination including POPQ, and pelvic MRI (static and dynamic) examination. Outcome measures: Quantitative measurements of genital prolapse. Results: All patients showed loss of the normal position of the perineal plate indicating generalized weakness of the whole pelvic floor muscles. Dynamic MRI exhibited pelvic floor abnormalities in 46 patients who did not show any abnormalities on the static images. Conclusion: Dynamic MRI is a helpful tool in defining the nature and quantitative measurements of pelvic organ prolapse. Also, MRI has and advantage over POPQ system in diagnosing lateral prolapse.
In this paper, based on a new type of censoring scheme called an
adaptive type-II progressive censoring scheme introduce by Ng et
al. , Naval Research Logistics is considered. Based on this type of
censoring the maximum likelihood estimation (MLE), Bayes estimation, and
parametric bootstrap method are used for estimating the unknown parameters.
Also, we propose to apply Markov chain Monte Carlo (MCMC) technique to carry
out a Bayesian estimation procedure and in turn calculate the credible
intervals. Point estimation and confidence intervals based on maximum
likelihood and bootstrap method are also proposed. The approximate Bayes
estimators obtained under the assumptions of non-informative priors, are
compared with the maximum likelihood estimators. Numerical examples using real
data set are presented to illustrate the methods of inference developed here.
Finally, the maximum likelihood, bootstrap and the different
Bayes estimates are compared via a Monte Carlo simulation study.