نتایج جستجو برای: pulmonary nodule detection
تعداد نتایج: 797234 فیلتر نتایج به سال:
Automatic detection of pulmonary nodules in thoracic computed tomography (CT) scans has been an active area of research for the last two decades. However, there have only been few studies that provide a comparative performance evaluation of different systems on a common database. We have therefore set up the LUNA16 challenge, an objective evaluation framework for automatic nodule detection algo...
OBJECTIVE To review the radiological management of a solitary pulmonary nodule. DATA SOURCES MEDLINE literature search (1958-2002). STUDY SELECTION All review articles and original articles. Key words for the literature search were 'solitary pulmonary nodule' and 'imaging'. DATA EXTRACTION All relevant information and data. DATA SYNTHESIS The solitary pulmonary nodule remains a perennia...
A solitary pulmonary nodule (SPN) is radiologically defined as an intraparenchymal lung lesion that is < 3 cm in diameter and is not associated with atelectasis or adenopathy. Lung lesions > 3 cm in size are defined as lung masses. A solitary pulmonary nodule is noted on 0.09 to 0.20 per cent of all chest radiographs. An estimated 150,000 such nodules are identified each year. Ninety per cent o...
OBJECTIVE This study was designed to assess the ability of radiologists to accurately detect calcification within a solitary pulmonary nodule with chest radiography. MATERIALS AND METHODS Thirty-five solitary pulmonary nodules that were examined by both posteroanterior and lateral chest radiography and on thin-section CT were retrospectively identified. Fourteen radiologists blinded to the re...
background: the beginning of metastasis poorly affects the prognosis of breast cancer patients. lung is the most frequent site of visceral metastasis, and the rate of recurrence is 10-30%. we have tried to find out if the routine chest x ray (cxr) could play a role for early detection of lung metastasis, during the prognosis of these patients. methods: the files of the breast cancer patients be...
We herein report a case of solitary pulmonary metastasis from malignant melanoma that presented as a pulmonary ground glass nodule. A 57-year-old man who had undergone resection of a malignant melanoma of the right bulbar conjunctiva at the age of 51 was referred to our hospital for management of ground glass opacity in his left lung. Because radiological examination suggested the nodule was an...
Automated detection and segmentation of pulmonary nodules on lung computed tomography (CT) scans can facilitate early lung cancer diagnosis. Existing supervised approaches for automated nodule segmentation on CT scans require voxel-based annotations for training, which are labor- and time-consuming to obtain. In this work, we propose a weakly-supervised method that generates accurate voxel-leve...
Lung cancer is one of the deadly and most common diseases in the world. Radiologists fail to diagnose small pulmonary nodules in as many as 30% of positive cases. Many methods have been proposed in the literature such as neural network algorithms. Recently, support vector machines (SVM)'s had received an increasing attention for pattern recognition. The advantage of SVM lies in better modeling ...
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