CT of the Thorax
نویسندگان
چکیده
منابع مشابه
Respiratory Signal Extraction for 4D CT Imaging of the Thorax from Cone-Beam CT Projections
Current methods of four-dimensional (4D) CT imaging of the thorax synchronise the acquisition with a respiratory signal to restrospectively sort acquired data. The quality of the 4D images relies on an accurate description of the position of the thorax in the respiratory cycle by the respiratory signal. Most of the methods used an external device for acquiring the respiratory signal. We propose...
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Radiologists need to find a position of a slice of one computed tomography (CT) scan in another scan. The image registration is a technique used to transform several images into one coordinate system and to compare them. Such transversal plane images obtained by CT scans are considered, where ribs are visible, but it does not lessen the significance of our work because many important internal o...
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disease of unknown etiology that occurs primarily in Orientals of young to middle age (1-4). Patients usually present with subcutaneous or soft tissue masses of the head and neck, often with involvement of the salivary glands and regional lymph nodes (5). The condition is characterized pathologically by the presence of lymphfolliculoid granuloma with infiltration of the mass and surrounding tis...
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Accurate attenuation correction of emission data is mandatory for quantitative analysis of PET images. One of the main concerns in CT-based attenuation correction (CTAC) of PET data in multimodality PET/CT imaging is misalignment occurred due to respiratory artifact between PET and CT images. In this paper a combined method which is simple and fast is proposed for registration of PET and CT dat...
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Background: This study presents patient specific and organ dose estimation in computed tomography (CT) imaging of thorax directly from patient CT image using Monte Carlo simulation. Patient's CT image is considered as the patient specific phantom and the best representative of patient physical index in order to calculate specific organ dose. Materials and Methods: EGSnrc /BEAMnr...
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ژورنال
عنوان ژورنال: Tuberculosis and Respiratory Diseases
سال: 1984
ISSN: 1738-3536,2005-6184
DOI: 10.4046/trd.1984.31.3.148