Parcourir par sujet "image quality"
Voici les éléments 1-11 de 11
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Breast cancer: Follow-up with MRI after therapy
(2009)Breast cancer is the most frequent malignancy in women worldwide. The incidence and mortality rates of the disease have increased the past few years, especially in richer countries that have adopted the mammographic screening ... -
Computer-based automated estimation of breast vascularity and correlation with breast cancer in DCE-MRI images
(2017)Dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) with gadolinium constitutes one of the most promising protocols for boosting up the sensitivity in breast cancer detection. The aim of this study was twofold: ... -
EANM procedural guidelines for PET/CT quantitative myocardial perfusion imaging
(2021)The use of cardiac PET, and in particular of quantitative myocardial perfusion PET, has been growing during the last years, because scanners are becoming widely available and because several studies have convincingly ... -
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Imaging biomarker analysis of advanced multiparametric MRI for glioma grading
(2019)Aims and objectives: To investigate the value of advanced multiparametric MR imaging biomarker analysis based on radiomic features and machine learning classification, in the non-invasive evaluation of tumor heterogeneity ... -
Intracranial Atherosclerotic Plaque as a Potential Cause of Embolic Stroke of Undetermined Source
(2021)Background: Previous studies investigated the potential mechanism of embolic stroke of undetermined source (ESUS) from extracranial artery plaque, but there has been no study other than a case report on high-risk intracranial ... -
PET Counting Response Variability Depending on Tumor Location, Activity, and Patient Obesity: A Feasibility Study of Solitary Pulmonary Nodule Using Monte Carlo
(2019)We aim to investigate the counting response variations of positron emission tomography (PET) scanners with different detector configurations in the presence of solitary pulmonary nodule (SPN). Using experimentally validated ... -
Prospective PET image quality gain calculation method by optimizing detector parameters
(2015)Background Lutetium-based scintillators with highperformance electronics introduced time-of-flight (TOF) reconstruction in the clinical setting. Let G′ be the total signal to noise ratio gain in a reconstructed image using ... -
Software upgrading in a CT scanner: Influence on quantitative CT
(1996)Purpose: In an attempt to improve field uniformity and CT number stability, the software in a CT scanner was replaced with a new version. The purpose of the present study was to investigate the influence of the software ... -
Strokes and TIAs during and after Carotid Artery Doppler: Cause or Coincidence?
(2015)The aim of the present study was to explore the prevalence of acute cerebrovascular symptoms temporally related to carotid Doppler examination (DEx), in order to increase the awareness and recording of such events and to ... -
Visualization of meniscus with 3D axial reconstructions
(2021)Purpose: To visualize the meniscus of the knee joint in the axial plane and identify injuries that cannot be visualized using conventional sequences. Methods: Two hundred and two subjects underwent an improvised 3-Dimensional ...