a well-known algorithm of clustering is k-means by which the data are divided into k classes based upon a distance criterion. in the present research, by using k-means method for classifying data derived from exploration boreholes in the parkam deposit, the optimum k has been calculated and then the data have been clustered and the relative geochemical behavioral characteristics analyzed. the c...

OBJECTIVE To document and critically analyse the impact of the revised WHO 2000 histological classification for meningiomas on postoperative radiotherapy/radiosurgery indications and MRI follow up protocols. METHODS The current (2000) WHO classification was used to grade 57 meningiomas treated surgically at one institution. These had been reviewed previously in 1999. All German neurosurgical ...

PURPOSE To quantify zonular weakness based on lens movement at the start of continuous curvilinear capsulorhexis (CCC) and establish a classification system for it. SETTING Kozawa Eye Hospital and Diabetes Center, Mito, Japan. DESIGN Retrospective interventional case series. METHODS We examined 402 consecutive eyes of 316 patients who underwent CCC, phacoemulsification and aspiration (PEA...

In the present study, we described cyto-histopathological features and immunophenotyping of the large B-cell lymphoma in an 8-year-old mixed breed dog with applying the World Health Organization (WHO) system of classification of canine lymphomas. In fine-needle aspiration (FNA), lymph nodes were involved by neoplastic cells of intermediate to large size with deep blue cytoplasm; consist of cent...

BACKGROUND The Global Initiative for Chronic Obstructive Lung Disease (GOLD) report provides a framework for classifying COPD reflecting the impacts of disease on patients and for targeting treatment recommendations. The GOLD 2017 introduced a new classification with 16 subgroups based on a composite of spirometry and symptoms/exacerbations. METHODS Data from the population-based PLATINO stud...

PURPOSE To assess the feasibility of texture analysis for classifying fibrosis stage and necroinflammatory activity grade in patients with chronic hepatitis C on T2-weighted (T2W), T1-weighted (T1W) and Gd-EOB-DTPA-enhanced hepatocyte-phase (EOB-HP) imaging. MATERIALS AND METHODS From April 2008 to June 2012, MR images from 123 patients with pathologically proven chronic hepatitis C were retr...

BACKGROUND Brainstem tumors represent 10% of central nervous system tumors, accounting for 30% of pediatric posterior fossa tumors. AIMS The aim of this study was to clinicopathologically correlate 45 cases of brain stem gliomas and determine the occurrence and prognostic significance of p53 expression. MATERIALS AND METHOD 45 cases of brain stem gliomas encountered during a 19-year period....

Surgical treatment of unruptured aneurysms is gaining increased support owing to the recently defined poor long-term natural history of these aneurysms. The benefit of treatment ultimately depends on the relative risk of subsequent aneurysm rupture in untreated patients versus the risk of surgery. To identify those patients at a higher risk from surgery, the authors reviewed the management of 1...