Background: Radiotherapy with large mantle field is an effective technique in increasing the risk of secondary cancers among HL (Hodgkin Lymphoma) patients; therefore, it is essential to choose an effective treatment field including the least medical conditions in radiotherapy.Objective: The present study aimed to plan separate fields for neck and mediastinum using various energies, to compare ...

We deal with estimation of multiple dipoles from combined MEG and EEG time–series. We use a sequential Monte Carlo algorithm to characterize the posterior distribution of the number of dipoles and their locations. By considering three test cases, we show that using the combined data the method can localize sources that are not easily (or not at all) visible with either of the two individual dat...

We develop objective Bayesian analysis for the linear regression model with random errors distributed according to the exponential power distribution. More specifically, we derive explicit expressions for three different Jeffreys priors for the model parameters. We show that only one of these Jeffreys priors leads to a proper posterior distribution. In addition, we develop fast posterior analys...

The Markov Chain Monte Carlo (MCMC) technique provides a means to generate a random sequence of model realizations that sample the posterior probability distribution of a Bayesian analysis. That sequence may be used to make inferences about the model uncertainties that derive from measurement uncertainties. This paper presents an approach to improving the efficiency of the Metropolis approach t...

a middle-aged woman with the chief complaints of dysnea and chest pain was referred to our center. chest x-rays and computed tomoram revealed a mass in the posteriof mediastinum, which was excised in toto. pathologicat report of the specimen labeled it as normal thyroid tissue (aberrant thyroid).

purpose: to report complications involving the posterior segment after laser assisted in situ keratomileusis (lasik) in 5 myopic patients ranging in age from 26 to 38 years. patients and findings: case one developed bilateral cilioretinal artery obstruction in association with ischemic optic neuropathy. case two presented with nonsimultaneous bilateral delayed-onset optic neuropathy. in case th...

Bayesian nonparametric inferential procedures based on Markov chain Monte Carlo marginal methods typically yield point estimates in the form of posterior expectations. Though very useful and easy to implement in a variety of statistical problems, these methods may suffer from some limitations if used to estimate non-linear functionals of the posterior distribution. The main goal is to develop a...

Distribution of atherosclerotic vascular lesions in the intracranial posterior circulation has not been as well documented as in the anterior circulation. Data regarding this aspect among Asian stroke patients are scarce. In present study, we sought to investigate the distribution of posterior circulation vascular lesions in Chinese stroke patients. We examined consecutive patients with acute i...

background: clinical information about stroke in the vertebrobasilar territory has lagged behind that for anterior circulation syndrome. this is the first report from posterior circulation syndrome registry in iran.   methods: consecutive patients with brain infarction in vertebrobasilar territory admitted to ghaem hospital, mashhad were enrolled in a prospective study during 2006-2007. diagnos...