نتایج جستجو برای: functional ct
تعداد نتایج: 712257 فیلتر نتایج به سال:
A cylindrical slice of seeded winter melon with an air-cavity was imaged using CT and EIT imaging systems. The structural regions were extracted from the CT image using morphological image processing algorithms and fused with the functional information of its EIT image. Fusion performance showed a detectability increase of 67% along with a structural similarity increase of 26%.
OBJECTIVE To evaluate whether magnetic resonance imaging (MRI) is effective as computed tomography (CT) in determining morphologic and functional pulmonary changes in patients with cystic fibrosis (CF) in association with multiple clinical parameters. MATERIALS AND METHODS Institutional review board approval and patient written informed consent were obtained. In this prospective study, 30 pat...
UNLABELLED Accurate anatomic localization of functional abnormalities seen with PET is known to be problematic. Even though nonspecific tracers such as 18F-FDG visualize certain normal anatomic structures, the spatial resolution is generally inadequate for localization of pathology. Combining PET with a high-resolution anatomic imaging modality such as CT can resolve the localization issue, as ...
PURPOSE To investigate the incorporation of functional lung image-derived low-attenuation area (LAA) based on 4-dimensional computed tomography (4D-CT) in volumetric modulated arc therapy (VMAT) planning for patients with malignant pleural mesothelioma (MPM) after extrapleural pneumonectomy. METHODS AND MATERIALS Twelve patients with MPM after extrapleural pneumonectomy were included. The pri...
BACKGROUND AND PURPOSE Thrombus CT characteristics might be useful for patient selection for intra-arterial treatment. Our objective was to study the association of thrombus CT characteristics with outcome and treatment effect in patients with acute ischemic stroke. MATERIALS AND METHODS We included 199 patients for whom thin-section NCCT and CTA within 30 minutes from each other were availab...
We present an interdisciplinary approach that, by incorporating a range of experimental and computational techniques, allows the identification and characterization of functional/immunogenic domains. This approach has been applied to ArtJ, an arginine-binding protein whose orthologs in Chlamydiae trachomatis (CT ArtJ) and pneumoniae (CPn ArtJ) are shown to have different immunogenic properties ...
OBJECTIVE To set out a severity classification for idiopathic pulmonary fibrosis (IPF) based on the interaction of pulmonary function parameters with high resolution computed tomography (CT) findings. INTRODUCTION Despite the contribution of functional and radiological methods in the study of IPF, there are few classification proposals for the disease based on these examinations. METHODS A ...
Trans-stenotic pressure gradient (TSPG) and fractional flow reserve (FFR) are well-validated hemodynamic indices to assess the ischemic severity of arterial stenoses. However, they have significant restrictions in practice due to invasiveness and high cost. Recently, a noninvasive assessment of FFR from computed tomography (CT) angiography has been well validated in evaluating functional corona...
BACKGROUND The diagnostic approach that should be used in disseminated neuroendocrine tumours (NET) remains a significant clinical problem. A novel approach has been the use of 111In Octreotide as functional imaging to find NETs. Therefore, the aim of this retrospective study is to report our comparison with direct CT as standard anatomical imaging. MATERIAL AND METHODS A total of 48 patients...
The combination of dietary sodium depletion and unilateral chorda tympani (CT) nerve section decreases sodium taste function in the intact CT nerve. However, functional changes have not been examined prior to day 4 postsectioning, even though degenerative and inflammatory responses are robust during that period. Rats received unilateral CT section and/or dietary sodium depletion, accomplished b...
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