Browsing by Subject "Medical imaging"
Now showing items 1-20 of 23
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3D protein-protein docking using shape complementarity and fast alignment
(2011)In this paper, a novel approach for fast protein-protein docking based on geometric complementarity is introduced. Complementarity matching is achieved using a rotation-invariant 3D shape descriptor, the Shape Impact ... -
Advanced cancer cell characterization and quantification of microscopy images
(2012)In this paper we present an advanced image analysis tool for the accurate characterization and quantification of cancer and apoptotic cells in microscopy images. Adaptive thresholding and Support Vector Machines classifiers ... -
Cancer cells detection and pathology quantification utilizing image analysis techniques
(2012)This paper presents an advanced image analysis tool for the accurate and fast characterization and quantification of cancer and apoptotic cells in microscopy images utilizing adaptive thresholding and a Support Vector ... -
Classification of pathological human brain lesions using magnetic resonance spectroscopy at 3T
(2009)Magnetic Resonance Spectroscopy is a powerful non-invasive diagnostic tool that is used in conjunction with MRI techniques to provide identification and quantification of biologically important compounds in soft tissue. ... -
Confluent hepatic fibrosis as the presenting imaging sign in nonadvanced alcoholic cirrhosis
(2004)Confluent hepatic fibrosis (CHF) is usually a feature of advanced cirrhosis, while occurrence in early stage compensated cirrhosis is uncommon. We report the imaging findings of masslike CHF in a patient with previously ... -
Design considerations for application of SiPMs in nuclear imaging
(2010)Silicon Photomultiplier (SiPM) detectors are attractive candidates for the replacement of Photomultipliers in nuclear imaging. They are compact, provide high gain with low Vbias and have fast response. In addition, SiPMs ... -
Development of a SIPM based gamma-ray imager using a Gd3Al 2Ga3O12:Ce (GAGG:Ce) scintillator array
(2013)In this study we present the performance evaluation of a 6×6 Gd3Al2Ga3O12:Ce (GAGG:Ce) pixellated scintillator with 2×2×5mm 3 crystal size elements, coupled to a silicon photomultiplier array (ArraySL-4). Evaluation was ... -
Dose calculation optimization in intracranial stereotactic radiotherapy using implicit surface modeling
(2009)Intracranial Stereotactic radiotherapy / radiosurgery utilize fractioned dose delivery through multiple noncoplanar arcs to avoid harm of normal tissue. Proper positioning of the arcs in respect to avoid Organs at Risk ... -
The effect of resonance on transient microbubble response; Response; experimental and theoretical observations
(2012)Nonlinear microbubble oscillations can be exploited by signal processing to provide contrast enhancement in ultrasound imaging. High-speed optical investigations have established that microbubbles resonate in-vitro, but ... -
An efficient implementation on a low cost FPGA for photon detection in nuclear imaging
(2010)The aim of this study is to propose and evaluate a simple, open source, data acquisition (DAQ) tool, which provides accurate results for nuclear imaging applications. For this purpose a Xilinx Spartan3E Starter Kit, which ... -
Evaluation of an imaging gamma probe based on R8900U-00-C12 PSPMT
(2012)In this study we present the construction and the evaluation of a gamma probe based on a R8900U-00-C12 position sensitive photomultiplier tube coupled to a pixelated CsI(Tl) crystal array with 2mm x 2mm x 3mm crystal ... -
Initial results on SiPM array based on a symmetric resistive voltage division readout
(2012)The aim of this study is to design and apply a symmetric resistive voltage division matrix to read out the compact silicon photomultiplier array (SPMArray2 by SensL) photodetector for possible applications as gamma or PET ... -
Maxillary sinus inflammatory disease: Ultrasound compared to computed tomography
(1997)Fifty-six patients (age range, 15-79 yr, average, 37.0±18.5 yr), with a clinical and/or radiological diagnosis of acute maxillary sinusitis, were prospectively studied with ultrasound (US) and computed tomography (CT). The ... -
Mobile healthcare information management utilizing Cloud Computing and Android OS
(2010)Cloud Computing provides functionality for managing information data in a distributed, ubiquitous and pervasive manner supporting several platforms, systems and applications. This work presents the implementation of a ... -
A modified Seeded Region Growing algorithm for vessel segmentation in breast MRI images for investigating the nature of potential lesions
(2014)The role of Magnetic Resonance Imaging (MRI) as an alternative protocol for screening of breast cancer has been intensively investigated during the past decade. Preliminary research results have indicated that gadolinium-agent ... -
MR imaging findings in early osteoarthritis of the knee
(2004)Purpose: To carry out a modern diagnostic survey among patients with a clinical and radiological diagnosis of early osteoarthritis of the knee. Materials and methods:A magnetic resonance imaging survey was performed on 70 ... -
A new formula for bivariate hermite interpolation on variable step grids and its application to image interpolation
(2014)In this paper, we present a novel formula of the bivariate Hermite interpolating (BHI) polynomial in the case of support points arranged on a grid with variable step. This expression is applicable when interpolation of a ... -
An open data mining framework for the analysis of medical images: Application on Obstructive Nephropathy microscopy images
(2010)This paper presents an open image-mining framework that provides access to tools and methods for the characterization of medical images. Several image processing and feature extraction operators have been implemented and ... -
Osteonecrosis of the femoral head: Etiology, imaging and treatment
(2007)Osteonecrosis of the femoral head is a disabling clinical entity affecting young adults that usually leads to destruction of the hip joint. A high index of suspicion is necessary for the diagnosis due to the insidious onset ... -
Photon dose kernels dataset for nuclear medicine dosimetry, using the GATE Monte Carlo toolkit
(2012)Photon dose point kernels (DPKs) were generated using the GATE toolkit for different media and for radionuclides of interest in nuclear medicine. In the present work the primary photon contribution of different isotopes ...