Minimization of imaging gradient effects in diffusion tensor imaging.


:A new, sample independent optimization criterion for minimizing the effect of the imaging gradients, including the directional awareness they create, is defined for diffusion tensor imaging (DTI) experiments. The DTI linear algebraic framework is expanded to a normed space to design optimal diffusion gradient schemes (DGS) in an integral fashion without separating the magnitude and direction of the DGS vectors. The feasible space of DGS vectors, for which the estimation equations are determinate, thus a hard constraint for the optimization, is parametrized. Newly generated optimal DGSs demonstrate on an isotropic sample and an ex-vivo baboon brain that the optimization goals are reached as well as a significant increase in estimation performance.


IEEE Trans Med Imaging


Özcan A




Has Abstract


2011-03-01 00:00:00












  • A geometric method for automatic extraction of sulcal fundi.

    abstract::Sulcal fundi are 3-D curves that lie in the depths of the cerebral cortex and, in addition to their intrinsic value in brain research, are often used as landmarks for downstream computations in brain imaging. In this paper, we present a geometric algorithm that automatically extracts the sulcal fundi from magnetic res...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Kao CY,Hofer M,Sapiro G,Stem J,Rehm K,Rottenberg DA

    更新日期:2007-04-01 00:00:00

  • Spherical Deformable U-Net: Application to Cortical Surface Parcellation and Development Prediction.

    abstract::Convolutional Neural Networks (CNNs) have achieved overwhelming success in learning-related problems for 2D/3D images in the Euclidean space. However, unlike in the Euclidean space, the shapes of many structures in medical imaging have an inherent spherical topology in a manifold space, e.g., the convoluted brain cort...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Zhao F,Wu Z,Wang L,Lin W,Gilmore JH,Xia S,Shen D,Li G

    更新日期:2021-01-08 00:00:00

  • Effect of detector weighting functions on the point spread function of high-resolution PET tomographs: a simulation study.

    abstract::The point spread function (PSF) of a ring PET tomograph is known to be spatially variant and difficult to obtain because it must be reconstructed from projections. A mathematical model was developed to simulate the data acquisition from a point source and to reconstruct the PSF, taking into account weighting functions...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Karuta B,Lecomte R

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  • Estimating 3-D respiratory motion from orbiting views by tomographic image registration.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Zeng R,Fessler JA,Balter JM

    更新日期:2007-02-01 00:00:00

  • Spatial-resolution enhancement in computed tomography.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Pan X,Yu L,Kao CM

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  • Volumetric texture segmentation by discriminant feature selection and multiresolution classification.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Reyes Aldasoro CC,Bhalerao A

    更新日期:2007-01-01 00:00:00

  • Four-dimensional spectral-spatial imaging using projection reconstruction.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Hyslop WB,Woods RK,Lauterbur PC

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  • Spherical harmonics microwave algorithm for shape and location reconstruction of breast cancer tumor.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: El-Shenawee M,Miller EL

    更新日期:2006-10-01 00:00:00

  • GPU-based real-time volumetric ultrasound image reconstruction for a ring array.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Choe JW,Nikoozadeh A,Oralkan O,Khuri-Yakub BT

    更新日期:2013-07-01 00:00:00

  • A Magnetic Resonance Imaging Surface Coil Transceiver Employing a Metasurface for 1.5T Applications.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Issa I,Ford KL,Rao M,Wild JM

    更新日期:2020-04-01 00:00:00

  • Strain Energy Decay Predicts Elastic Registration Accuracy from Intraoperative Data Constraints.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Heiselman JS,Miga MI

    更新日期:2021-01-18 00:00:00

  • Noninvasive Reconstruction of Transmural Transmembrane Potential With Simultaneous Estimation of Prior Model Error.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Ghimire S,Sapp JL,Horacek BM,Wang L

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  • Endoscopic video manifolds for targeted optical biopsy.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Atasoy S,Mateus D,Meining A,Yang GZ,Navab N

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  • Digital mammography: mixed feature neural network with spectral entropy decision for detection of microcalcifications.

    abstract::A computationally efficient mixed feature based neural network (MFNN) is proposed for the detection of microcalcification clusters (MCCs) in digitized mammograms. The MFNN employs features computed in both the spatial and spectral domain and uses spectral entropy as a decision parameter. Backpropagation with Kalman fi...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Zheng B,Qian W,Clarke LP

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  • Learning Geodesic Active Contours for Embedding Object Global Information in Segmentation CNNs.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Ma J,He J,Yang X

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  • Direct Parametric Reconstruction Using Anatomical Regularization for Simultaneous PET/MRI Data.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Loeb R,Navab N,Ziegler SI

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    journal_title:IEEE transactions on medical imaging

    pub_type: 临床试验,杂志文章


    authors: Madabhushi A,Feldman MD,Metaxas DN,Tomaszeweski J,Chute D

    更新日期:2005-12-01 00:00:00

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Stahli PS,Frenz M,Jaeger M

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  • The problem of scatter correction in positron volume imaging.

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    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Thompson CJ

    更新日期:1993-01-01 00:00:00

  • Standing-wave and RF penetration artifacts caused by elliptic geometry: an electrodynamic analysis of MRI.

    abstract::Motivated by the observation that the diagonal pattern of intensity nonuniformity usually associated with linearly polarized radio-frequency (RF) coils is often present in neurological scans using circularly polarized coils, a theoretical analysis has been conducted of the intensity nonuniformity inherent in imaging a...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Sled JG,Pike GB

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  • Compensation for nonuniform resolution using penalized-likelihood reconstruction in space-variant imaging systems.

    abstract::Imaging systems that form estimates using a statistical approach generally yield images with nonuniform resolution properties. That is, the reconstructed images possess resolution properties marked by space-variant and/or anisotropic responses. We have previously developed a space-variant penalty for penalized-likelih...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Stayman JW,Fessler JA

    更新日期:2004-03-01 00:00:00

  • Hot spot detection based on feature space representation of visual search.

    abstract::This paper presents a new framework for capturing intrinsic visual search behavior of different observers in image understanding by analysing saccadic eye movements in feature space. The method is based on the information theory for identifying salient image features based on which visual search is performed. We demon...

    journal_title:IEEE transactions on medical imaging

    pub_type: 临床试验,杂志文章


    authors: Hu XP,Dempere-Marco L,Yang GZ

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  • Pulmonary Lobe Segmentation With Probabilistic Segmentation of the Fissures and a Groupwise Fissure Prior.

    abstract::A fully automated, unsupervised lobe segmentation algorithm is presented based on a probabilistic segmentation of the fissures and the simultaneous construction of a populationmodel of the fissures. A two-class probabilistic segmentation segments the lung into candidate fissure voxels and the surrounding parenchyma. T...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Bragman FJS,McClelland JR,Jacob J,Hurst JR,Hawkes DJ

    更新日期:2017-08-01 00:00:00

  • Unified bundling and registration of brain white matter fibers.

    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

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

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  • Implementation, investigation, and improvement of a novel cone-beam reconstruction method [SPECT].

    abstract::A three-dimensional reconstruction method which uses cone-beam data was implemented. Issues concerning implementation are investigated and discussed in detail. Computer simulations were used to determine the amount of image degradation occurring in each of the three steps that comprise the reconstruction method. In ad...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Smith BD,Chen J

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  • Noninvasive mapping of transmural potentials during activation in swine hearts from body surface electrocardiograms.

    abstract::The three-dimensional cardiac electrical imaging (3DCEI) technique was previously developed to estimate the initiation site(s) of cardiac activation and activation sequence from the noninvasively measured body surface potential maps (BSPMs). The aim of this study was to develop and evaluate the capability of 3DCEI in ...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Liu C,Eggen MD,Swingen CM,Iaizzo PA,He B

    更新日期:2012-09-01 00:00:00

  • Detecting film-screen artifacts in mammography using a model-based approach.

    abstract::Microcalcifications can be one of the earliest signs of breast cancer. Unfortunately, their appearance in mammograms can be mimicked by dust and dirt entering the imaging process and this has been shown previously to lead to false positives. We use a model of the imaging process and, in particular, the blurring functi...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Highnam R,Brady M,English R

    更新日期:1999-10-01 00:00:00

  • Low-level segmentation of 3-D magnetic resonance brain images-a rule-based system.

    abstract::A rule-based, low-level segmentation system that can automatically identify the space occupied by different structures of the brain by magnetic resonance imaging (MRI) is described. Given three-dimensional image data as a stack of slices, it can extract brain parenchyma, cerebro-spinal fluid, and high-intensity abnorm...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Raya SP

    更新日期:1990-01-01 00:00:00

  • Lung 4D CT Image Registration Based on High-Order Markov Random Field.

    abstract::To solve the problem that traditional image registration methods based on continuous optimization for large motion lung 4D CT image sequences are easy to fall into local optimal solutions and lead to serious misregistration, a novel image registration method based on high-order Markov Random Field (MRF) is proposed. B...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Xue P,Dong E,Ji H

    更新日期:2020-04-01 00:00:00

  • An improved algorithm for 2-D translational motion artifact correction.

    abstract::The quality of magnetic resonance imaging systems has improved to the point that motion is a major limitation in many examinations. Translational motion in the imaging plane causes the phase of the data to be corrupted. An algorithm using computer post-processing is proposed to correct the phase of the data, and hence...

    journal_title:IEEE transactions on medical imaging

    pub_type: 杂志文章


    authors: Medley M,Yan H,Rosenfeld D

    更新日期:1991-01-01 00:00:00