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In this study, brain activation associated with forward and backward digit recall was examined in healthy old and young adults using functional MRI. A number of areas were activated during the recall. In young adults, greater activation was found in the left prefrontal cortex (BA9) and the left occipital visual cortex during backward digit recall than(More)
In this work, a level set energy for segmenting the lungs from digital Posterior-Anterior (PA) chest x-ray images is presented. The primary challenge in using active contours for lung segmentation is local minima due to shading effects and presence of strong edges due to the rib cage and clavicle. We have used the availability of good contrast at the lung(More)
This paper presents an automatic computer-aided detection scheme on digital chest radiographs to detect pneumoconiosis. Firstly, the lung fields are segmented from a digital chest X-ray image by using the active shape model method. Then, the lung fields are subdivided into six non-overlapping regions, according to Chinese diagnosis criteria of(More)
A function of working memory is to remember the temporal sequence of events, often occurring across different sensory modalities. To study the neural correlates of this function, we conducted an event-related functional magnetic resonance imaging (fMRI) experiment with a cross-modal memory task. Subjects were required to recall auditory digits and visual(More)
BACKGROUND It is not clear yet about the secular changes of morbidity and mortality trend of lung cancer in residents of Nangang District of Harbin in China. The aim of this study is to estimate the trend of lung cancer morbidity and mortality in residents of Nangang District from 1992 to 2001 and to predict their levels in the future 5 years. METHODS(More)
Increasing evidence has placed eukaryotic translation initiation factor 4E (eIF4E) at the hub of tumor development and progression. Several studies have reported that eIF4E is over-expressed in cervical cancer; however, the mechanism remains elusive. The results of this study further confirm over-expression of eIF4E in cervical cancer tumors and cell lines,(More)
A novel class of wavelength-selective coupling photonic crystal fiber (PCF) that operates by a hybrid light-guiding mechanism has been proposed. Different from the traditional PCF coupler operating principle, this fiber coupler shares properties of both the total internal reflection index-guided and the photonic bandgap mechanism. This coupler allows highly(More)
INTRODUCTION Recent studies have revealed a potential relationship between the presence of ground glass opacity (GGO) on regular computerized tomography (CT) and adenocarcinomas. OBJECTIVES To investigate features of pre-invasive lung adenocarcinoma lesions on thin-section CT. METHODS We evaluated 59 cases of atypical adenomatous hyperplasia (AAH) and(More)
BACKGROUND The pandemic influenza A (H1N1) virus emerged during 2009 and has spread worldwide. This virus can cause injuries to the lungs, liver, and heart. However, data regarding whether this influenza virus can affect pancreatic islets are limited. We investigated the effects of influenza A (H1N1) pneumonia on fasting plasma glucose (FPG) and islet(More)
BACKGROUND To evaluate the relationship among indoor air pollution, depression and oncogenesis of lung cancer. METHODS An 1:3 matched case-control study was carried out. Conditional logistic regression was applied to process the data. RESULTS After some confounding factors were adjusted, the ORs increased 122% and 113% for the amount of coal using(More)