abstract：:A major issue in telepathology is the extremely large and growing size of digitized "virtual" slides, which can require several gigabytes of storage and cause significant delays in data transmission for remote image interpretation and interactive visualization by pathologists. Compression can reduce this massive amoun...

journal_title：IEEE transactions on medical imaging

authors： Johnson JP,Krupinski EA,Yan M,Roehrig H,Graham AR,Weinstein RS

更新日期：2011-02-01 00:00:00

abstract：:This paper investigates the problem of atlas registration of brain images with gliomas. Multiparametric imaging modalities (T1, T1-CE, T2, and FLAIR) are first utilized for segmentations of different tissues, and to compute the posterior probability map (PBM) of membership to each tissue class, using supervised learni...

journal_title：IEEE transactions on medical imaging

authors： Gooya A,Biros G,Davatzikos C

更新日期：2011-02-01 00:00:00

abstract：:The success of prostate brachytherapy critically depends on delivering adequate dose to the prostate gland. Intraoperative localization of the implanted seeds provides potential for dose evaluation and optimization during therapy. A reduced-dimensionality matching algorithm for prostate brachytherapy seed reconstructi...

journal_title：IEEE transactions on medical imaging

authors： Lee J,Labat C,Jain AK,Song DY,Burdette EC,Fichtinger G,Prince JL

更新日期：2011-01-01 00:00:00

abstract：:It is well known that the energy dependence of X-ray attenuation can be used to characterize materials. Yet, even with energy discriminating photon counting X-ray detectors, it is still unclear how to best form energy dependent measurements for spectral imaging. Common ideas include binning photon counts based on thei...

journal_title：IEEE transactions on medical imaging

authors： Wang AS,Pelc NJ

更新日期：2011-01-01 00:00:00

abstract：:We propose a nonparametric, probabilistic model for the automatic segmentation of medical images, given a training set of images and corresponding label maps. The resulting inference algorithms rely on pairwise registrations between the test image and individual training images. The training labels are then transferre...

journal_title：IEEE transactions on medical imaging

authors： Sabuncu MR,Yeo BT,Van Leemput K,Fischl B,Golland P

更新日期：2010-10-01 00:00:00

abstract：:Fast magnetic resonance imaging slice acquisition techniques such as single shot fast spin echo are routinely used in the presence of uncontrollable motion. These techniques are widely used for fetal magnetic resonance imaging (MRI) and MRI of moving subjects and organs. Although high-quality slices are frequently acq...

journal_title：IEEE transactions on medical imaging

authors： Gholipour A,Estroff JA,Warfield SK

更新日期：2010-10-01 00:00:00

abstract：:Magnetic resonance tagging makes it possible to measure the motion of tissues such as muscles in the heart and tongue. The harmonic phase (HARP) method largely automates the process of tracking points within tagged MR images, permitting many motion properties to be computed. However, HARP tracking can yield erroneous ...

journal_title：IEEE transactions on medical imaging

authors： Liu X,Prince JL

更新日期：2010-08-01 00:00:00

abstract：:Mobile C-arm is an essential tool in everyday trauma and orthopedics surgery. Minimally invasive solutions, based on X-ray imaging and coregistered external navigation created a lot of interest within the surgical community and started to replace the traditional open surgery for many procedures. These solutions usuall...

journal_title：IEEE transactions on medical imaging

authors： Navab N,Heining SM,Traub J

更新日期：2010-07-01 00:00:00

abstract：:We suggest a polynomial program for the calculation of optimized gradient waveforms for magnetic resonance tomography pulse sequences. Such non-linear mathematical programs can describe gradient system capabilities, meet k-space trajectory specifications, and capture sequence timing conditions. Moreover they allow the...

journal_title：IEEE transactions on medical imaging

authors： Majewski K,Heid O,Kluge T

更新日期：2010-06-01 00:00:00

abstract：:Magnetic resonance imaging (MRI) on patients with implanted deep brain stimulators (DBSs) can be hazardous because of the antenna-effect of leads exposed to the incident radio-frequency field. This study evaluated electromagnetic field and specific absorption rate (SAR) changes as a function of lead resistivity on an ...

journal_title：IEEE transactions on medical imaging

authors： Angelone LM,Ahveninen J,Belliveau JW,Bonmassar G

更新日期：2010-04-01 00:00:00

abstract：:Within-subject analysis in fMRI essentially addresses two problems, the detection of brain regions eliciting evoked activity and the estimation of the underlying dynamics. In Makni et aL, 2005 and Makni et aL, 2008, a detection-estimation framework has been proposed to tackle these problems jointly, since they are con...

journal_title：IEEE transactions on medical imaging

authors： Vincent T,Risser L,Ciuciu P

更新日期：2010-04-01 00:00:00

abstract：:X-ray computed tomography is a powerful medical imaging device. It allows high-resolution 3-D visualization of the human body. However, one drawback is the health risk associated with ionizing radiation. Simply downscaling the radiation intensities over the entire scan results in increased quantum noise. This paper pr...

journal_title：IEEE transactions on medical imaging

authors： Sperl J,Beque D,Claus B,De Man B,Senzig B,Brokate M

更新日期：2010-03-01 00:00:00

abstract：:Cell segmentation and tracking in time-lapse fluorescence microscopy images is a task of fundamental importance in many biological studies on cell migration and proliferation. In recent years, level sets have been shown to provide a very appropriate framework for this purpose, as they are well suited to capture topolo...

journal_title：IEEE transactions on medical imaging

authors： Dzyubachyk O,van Cappellen WA,Essers J,Niessen WJ,Meijering E

更新日期：2010-03-01 00:00:00

abstract：:Several different reconstruction algorithms have been proposed for photoacoustic tomography, most of which presuppose that the acoustic properties of the medium are constant and homogeneous. In practice, there are often unknown spatial variations in the acoustic properties, and these algorithms give, at best, only app...

journal_title：IEEE transactions on medical imaging

authors： Cox BT,Treeby BE

更新日期：2010-02-01 00:00:00

abstract：:In this paper, we propose the use of multiscale amplitude-modulation-frequency-modulation (AM-FM) methods for discriminating between normal and pathological retinal images. The method presented in this paper is tested using standard images from the early treatment diabetic retinopathy study. We use 120 regions of 40 x...

journal_title：IEEE transactions on medical imaging

authors： Agurto C,Murray V,Barriga E,Murillo S,Pattichis M,Davis H,Russell S,Abramoff M,Soliz P

更新日期：2010-02-01 00:00:00

abstract：:In this paper, we present a robust approach to the registration of white matter tractographies extracted from diffusion tensor-magnetic resonance imaging scans. The fibers are projected into a high dimensional feature space based on the sequence of their 3-D coordinates. Adaptive mean-shift clustering is applied to ex...

journal_title：IEEE transactions on medical imaging

authors： Zvitia O,Mayer A,Shadmi R,Miron S,Greenspan HK

更新日期：2010-01-01 00:00:00

abstract：:Maximization of mutual information (MMI) is a popular similarity measure for medical image registration. Although its accuracy and robustness has been demonstrated for rigid body image registration, extending MMI to nonrigid image registration is not trivial and an active field of research. We propose conditional mutu...

journal_title：IEEE transactions on medical imaging

authors： Loeckx D,Slagmolen P,Maes F,Vandermeulen D,Suetens P

更新日期：2010-01-01 00:00:00

abstract：:The high-frequency transceiver array based on the microstrip transmission line design is a promising technique for ultrahigh field magnetic resonance imaging (MRI) signal excitation and reception. However, with the increase of radio-frequency (RF) channels, the size of the ground plane in each microstrip coil element ...

journal_title：IEEE transactions on medical imaging

authors： Wu B,Wang C,Kelley DA,Xu D,Vigneron DB,Nelson SJ,Zhang X

更新日期：2010-01-01 00:00:00

abstract：:Reaction-diffusion based tumor growth models have been widely used in the literature for modeling the growth of brain gliomas. Lately, recent models have started integrating medical images in their formulation. Including different tissue types, geometry of the brain and the directions of white matter fiber tracts impr...

journal_title：IEEE transactions on medical imaging

authors： Konukoglu E,Clatz O,Menze BH,Stieltjes B,Weber MA,Mandonnet E,Delingette H,Ayache N

更新日期：2010-01-01 00:00:00

abstract：:We show that electrical impedance tomography (EIT) image reconstruction algorithms with regularization based on the total variation (TV) functional are suitable for in vivo imaging of physiological data. This reconstruction approach helps to preserve discontinuities in reconstructed profiles, such as step changes in e...

journal_title：IEEE transactions on medical imaging

authors： Borsic A,Graham BM,Adler A,Lionheart WR

更新日期：2010-01-01 00:00:00

abstract：:Dynamic contrast-enhanced magnetic resonance (DCE-MR) imaging can be used to study microvascular structure in vivo by monitoring the abundance of an injected diffusible contrast agent over time. The resulting spatially resolved intensity-time curves are usually interpreted in terms of kinetic parameters obtained by fi...

journal_title：IEEE transactions on medical imaging

authors： Kelm BM,Menze BH,Nix O,Zechmann CM,Hamprecht FA

更新日期：2009-10-01 00:00:00

abstract：:Dynamic contrast-enhanced magnetic resonance imaging (MRI) is a promising tool in the evaluation of tumor physiology. From rapidly acquired images and a model for contrast agent pharmacokinetics, physiological parameters are derived. One pharmacokinetic model, the tissue homogeneity model, enables estimation of both b...

journal_title：IEEE transactions on medical imaging

authors： Garpebring A,Ostlund N,Karlsson M

更新日期：2009-09-01 00:00:00

abstract：:Magnetic resonance diffusion tensor imaging is being widely used to reconstruct brain white matter fiber tracts. To characterize structural properties of the tracts, reconstructed fibers are often grouped into bundles that correspond to coherent anatomic structures. For further group analysis of fiber bundles, it is d...

journal_title：IEEE transactions on medical imaging

authors： Xu Q,Anderson AW,Gore JC,Ding Z

更新日期：2009-09-01 00:00:00

abstract：:The magnetic particle imaging (MPI) method directly images the magnetization of super-paramagnetic iron oxide (SPIO) nanoparticles, which are contrast agents commonly used in magnetic resonance imaging (MRI). MPI, as originally envisioned, requires a high-bandwidth receiver coil and preamplifier, which are difficult t...

journal_title：IEEE transactions on medical imaging

authors： Goodwill PW,Scott GC,Stang PP,Conolly SM

更新日期：2009-08-01 00:00:00

abstract：:It is now recognized that prediction of the vulnerable coronary plaque rupture requires not only an accurate quantification of fibrous cap thickness and necrotic core morphology but also a precise knowledge of the mechanical properties of plaque components. Indeed, such knowledge would allow a precise evaluation of th...

journal_title：IEEE transactions on medical imaging

authors： Le Floc'h S,Ohayon J,Tracqui P,Finet G,Gharib AM,Maurice RL,Cloutier G,Pettigrew RI

更新日期：2009-07-01 00:00:00

abstract：:Radio-frequency current density imaging (RF-CDI) is an imaging technique that noninvasively measures current density distribution at the Larmor frequency utilizing magnetic resonance imaging (MRI). Previously implemented RF-CDI techniques were only able to image a single slice transverse to the static magnetic field B...

journal_title：IEEE transactions on medical imaging

authors： Wang D,DeMonte TP,Ma W,Joy ML,Nachman AI

更新日期：2009-07-01 00:00:00

abstract：:Breast imaging via microwave tomography involves estimating the distribution of dielectric properties within the patient's breast on a discrete mesh. The number of unknowns in the discrete mesh can be very large for 3-D imaging, and this results in computational challenges. We propose a new approach where the discrete...

journal_title：IEEE transactions on medical imaging

authors： Winters DW,Shea JD,Kosmas P,Van Veen BD,Hagness SC

更新日期：2009-07-01 00:00:00

abstract：:The Bayesian ideal observer provides an absolute upper bound for diagnostic performance of an imaging system and hence should be used for the assessment of image quality whenever possible. However, computation of ideal-observer performance in clinical tasks is difficult since the probability density functions of the d...

journal_title：IEEE transactions on medical imaging

authors： Park S,Witten JM,Myers KJ

更新日期：2009-05-01 00:00:00

abstract：:In this paper, we propose a novel method for the registration of volumetric images of the brain that optimizes the alignment of both cortical and subcortical structures. In order to achieve this, relevant geometrical information is extracted from a surface-based morph and diffused into the volume using the Navier oper...

journal_title：IEEE transactions on medical imaging

authors： Postelnicu G,Zollei L,Fischl B

更新日期：2009-04-01 00:00:00

abstract：:Multisource cone-beam computed tomography (CT) is an attractive approach of choice for superior temporal resolution, which is critically important for cardiac imaging and contrast enhanced studies. In this paper, we present a filtered-backprojection (FBP) algorithm for triple-source helical cone-beam CT. The algorithm...

journal_title：IEEE transactions on medical imaging

authors： Zhao J,Jin Y,Lu Y,Wang G

更新日期：2009-03-01 00:00:00

abstract：:We describe a matched subspace detection algorithm to assist in the detection of small tumors in dynamic positron emission tomography (PET) images. The algorithm is designed to differentiate tumors from background using the time activity curves (TACs) that characterize the uptake of PET tracers. TACs are modeled using...

journal_title：IEEE transactions on medical imaging

authors： Li Z,Li Q,Yu X,Conti PS,Leahy RM

更新日期：2009-02-01 00:00:00

abstract：:The polymeric implant material poly(lactide-co-glycolide) (PLGA) degrades by a process of bulk degradation, which allows it to be used for the controlled release of therapeutic molecules from implants and microspheres. The temporal characterization of PLGA microsphere degradation has been limited by the need to destru...

journal_title：IEEE transactions on medical imaging

authors： Patterson J,Stayton PS,Li X

更新日期：2009-01-01 00:00:00

abstract：:Spatial normalization is frequently used to map data to a standard coordinate system by removing intersubject morphological differences, thereby allowing for group analysis to be carried out. The work presented in this paper is motivated by the need for an automated cortical surface normalization technique that will a...

journal_title：IEEE transactions on medical imaging

authors： Tosun D,Prince JL

更新日期：2008-12-01 00:00:00

abstract：:Active shape models bear a great promise for model-based medical image analysis. Their practical use, though, is undermined due to the need to train such models on large image databases. Automatic building of point distribution models (PDMs) has been successfully addressed and a number of autolandmarking techniques ar...

journal_title：IEEE transactions on medical imaging

authors： Tobon-Gomez C,Butakoff C,Aguade S,Sukno F,Moragas G,Frangi AF

更新日期：2008-11-01 00:00:00

abstract：:Atherosclerosis at the carotid bifurcation resulting in cerebral emboli is a major cause of ischemic stroke. Most strokes associated with carotid atherosclerosis can be prevented by lifestyle/dietary changes and pharmacological treatments if identified early by monitoring carotid plaque changes. Registration of 3-D ul...

journal_title：IEEE transactions on medical imaging

authors： Nanayakkara ND,Chiu B,Samani A,Spence JD,Samarabandu J,Fenster A

更新日期：2008-10-01 00:00:00

abstract：:In fast magnetic resonance (MR) imaging with long readout times, such as echo-planar imaging (EPI) and spiral scans, it is important to correct for the effects of field inhomogeneity to reduce image distortion and blurring. Such corrections require an accurate field map, a map of the off-resonance frequency at each vo...

journal_title：IEEE transactions on medical imaging

authors： Funai AK,Fessler JA,Yeo DT,Olafsson VT,Noll DC

更新日期：2008-10-01 00:00:00

abstract：:Blood oxygen level dependent (BOLD) functional magnetic resonance imaging (fMRI) is conventionally done by reconstructing T(2)(*)-weighted images. However, since the images are unitless they are nonquantifiable in terms of important physiological parameters. An alternative approach is to reconstruct R(2)(*) maps which...

journal_title：IEEE transactions on medical imaging

authors： Olafsson VT,Noll DC,Fessler JA

更新日期：2008-09-01 00:00:00

abstract：:With continuing improvements in spatial resolution of positron emission tomography (PET) scanners, small patient movements during PET imaging become a significant source of resolution degradation. This work develops and investigates a comprehensive formalism for accurate motion-compensated reconstruction which at the ...

journal_title：IEEE transactions on medical imaging

authors： Rahmim A,Dinelle K,Cheng JC,Shilov MA,Segars WP,Lidstone SC,Blinder S,Rousset OG,Vajihollahi H,Tsui BM,Wong DF,Sossi V

更新日期：2008-08-01 00:00:00

abstract：:This paper introduces and evaluates a block-iterative Fisher scoring (BFS) algorithm. The algorithm provides regularized estimation in tomographic models of projection data with Poisson variability. Regularization is achieved by penalized likelihood with a general quadratic penalty. Local convergence of the block-iter...

journal_title：IEEE transactions on medical imaging

authors： Ma J,Hudson M

更新日期：2008-08-01 00:00:00

abstract：:Diffusion tensor magnetic resonance imaging (DT-MRI) is capable of providing quantitative insights into tissue microstructure in the brain. An important piece of information offered by DT-MRI is the directional preference of diffusing water molecules within a voxel. Building upon this local directional information, DT...

journal_title：IEEE transactions on medical imaging

authors： Koay CG,Nevo U,Chang LC,Pierpaoli C,Basser PJ

更新日期：2008-06-01 00:00:00