40 Hits in 7.0 sec

Validation of Non-rigid Registration of Contrast-Enhanced MR Mammography Using Finite Element Methods [chapter]

J. A. Schnabel, C. Tanner, A. D. Castellano Smith, A. Degenhard, C. Hayes, M. O. Leach, D. R. Hose, D. L. G. Hill, D. J. Hawkes
2002 Bildverarbeitung für die Medizin 2002  
This paper presents a validation study for non-rigid registration of 3D contrast enhanced magnetic resonance mammography images.  ...  We compare the performance of two non-rigid registration algorithms based on single-and multilevel free-form deformations using B-splines and normalized mutual information.  ...  We have presented a non-rigid registration validation study for CE-MR mammography using finite element methods as a biomechanical gold standard, and have successfully validated two FFD-based non-rigid  ... 
doi:10.1007/978-3-642-55983-9_33 fatcat:bz46wibuovbcrcvm5sth7mcrvu

Validation of nonrigid image registration using finite-element methods: application to breast MR images

J.A. Schnabel, C. Tanner, A.D. Castellano-Smith, A. Degenhard, M.O. Leach, D.R. Hose, D.L.G. Hill, D.J. Hawkes
2003 IEEE Transactions on Medical Imaging  
This method is based on the simulation of physically plausible, biomechanical tissue deformations using finite-element methods.  ...  This paper presents a novel method for validation of nonrigid medical image registration.  ...  Penrose from the University of Sheffield for their help in the model construction.  ... 
doi:10.1109/tmi.2002.808367 pmid:12716000 fatcat:i6z5kh2xqndshgrifeocqcpa2q

Validation of Volume-Preserving Non-rigid Registration: Application to Contrast-Enhanced MR-Mammography [chapter]

C. Tanner, J. A. Schnabel, A. Degenhard, A. D. Castellano-Smith, C. Hayes, M. O. Leach, D. R. Hose, D. L. G. Hill, D. J. Hawkes
2002 Lecture Notes in Computer Science  
In this paper, we present a validation study for volume preserving nonrigid registration of 3D contrast-enhanced magnetic resonance mammograms.  ...  The validation is based on the simulation of physically plausible breast deformations with biomechanical breast models (BBMs) employing finite element methods.  ...  Validation The validation is based on the simulation of plausible breast deformation using biomechanical breast models based on finite element methods [10] . Biomechanical Breast Models.  ... 
doi:10.1007/3-540-45786-0_38 fatcat:7hkgnaoswvf5tjqq45wid33the

Quantitative evaluation of free-form deformation registration for dynamic contrast-enhanced MR mammography

Christine Tanner, Julia A. Schnabel, Derek L. G. Hill, David J. Hawkes, Andreas Degenhard, Martin O. Leach, D. Rodney Hose, Margaret A. Hall-Craggs, Sasha I. Usiskin
2007 Medical Physics (Lancaster)  
The evaluation is based on the simulation of physically plausible breast deformations using finite element methods and on contrast-enhanced image pairs without visually detectable motion artifacts.  ...  In this paper, we present an evaluation study of a set of registration strategies for the alignment of sequences of 3D dynamic contrast-enhanced magnetic resonance breast images.  ...  INTRODUCTION Dynamic contrast-enhanced magnetic resonance ͑DCE MR͒ mammography is based on obtaining MR images before and after the injection of contrast agent into the bloodstream.  ... 
doi:10.1118/1.2712040 pmid:17500454 fatcat:osrxpji4rne7pary2makt5yqlu

A New Validation Method for X-ray Mammogram Registration Algorithms Using a Projection Model of Breast X-ray Compression

John H. Hipwell, Christine Tanner, William R. Crum, Julia A. Schnabel, David J. Hawkes
2007 IEEE Transactions on Medical Imaging  
In this paper, we describe a novel validation method which simulates plausible mammographic compressions of the breast using a magnetic resonance imaging (MRI) derived finite element model.  ...  D displacements with which to validate a registration algorithm.  ...  Thomas' NHS Foundation Trust for providing the image data used in this study.  ... 
doi:10.1109/tmi.2007.903569 pmid:17896592 fatcat:zobi7kv46zgengpawaeiy56xni

Subject index

1999 IEEE Transactions on Medical Imaging  
Sekihara, K., + , T-MI Jan 99 92-97 microwave imaging using finite-element method and sensitivity anal. nonlin. distortion correction based on least sq. estim. microwave imaging using finite-element method  ...  ., + , T-MI Jul 99 617-627 microwave imaging using finite-element method and sensitivity anal. approach.  ...  -based eval. of image-proc. and class. methods. Kwan, R.K.-S., + , T-MI Nov. 1999  ... 
doi:10.1109/tmi.1999.819331 fatcat:g7ntb6icpzgs7jwncaguherqne

Nonrigid image registration in shared-memory multiprocessor environments with application to brains, breasts, and bees

T. Rohlfing, C.R. Maurer
2003 IEEE Transactions on Information Technology in Biomedicine  
For three different biomedical applications (intraoperative brain deformation, contrast-enhanced MR mammography, intersubject brain registration), the scaling behavior of the algorithm is quantitatively  ...  This paper presents a parallel implementation of a nonrigid image registration algorithm.  ...  Lewis for his generous help and expert advice on thread programming and the reviewers of this paper for their valuable comments and helpful suggestions.  ... 
doi:10.1109/titb.2003.808506 pmid:12670015 fatcat:i6obinr36fd2zniaufe6yahn2y

Mono- and multimodal registration of optical breast images

Paul C. Pearlman, Arthur Adams, Sjoerd G. Elias, Willem P. Th. M. Mali, Max A. Viergever, Josien P. W. Pluim
2012 Journal of Biomedical Optics  
Methods used for registration and fusion of optical breast images are reviewed.  ...  The multimodal registration discussion concerns digital x-ray mammography, ultrasound, magnetic resonance imaging, and positron emission tomography.  ...  They first segment the MR image and then generate a 3-D finite element mesh using coronal contours from the segmentation.  ... 
doi:10.1117/1.jbo.17.8.080901 pmid:23224161 fatcat:cdabzcj2gveezijinyyvrfb5ae

Nonrigid Medical Image Registration by Finite-Element Deformable Sheet-Curve Models

Jianhua Xuan, Yue Wang, Matthew T. Freedman, Tulay Adali, Peter Shields
2006 International Journal of Biomedical Imaging  
This paper reports a newly developed registration method that aligns MR breast images using finite-element deformable sheet-curve models.  ...  Accurate extraction of glandular tissue from pre- and postcontrast magnetic resonance (MR) images requires a nonrigid registration of sequential MR images embedded with local deformations.  ...  Finite element modeling We use a finite-element method to compute the numerical solutions of U s and U c .  ... 
doi:10.1155/ijbi/2006/73430 pmid:23165046 pmcid:PMC2324049 fatcat:ycgwfjseajhsjooyfzkrgsqkb4

Factors influencing the accuracy of biomechanical breast models

Christine Tanner, Julia A. Schnabel, Derek L. G. Hill, David J. Hawkes, Martin O. Leach, D. Rodney Hose
2006 Medical Physics (Lancaster)  
Recently it has been suggested that finite element methods could be used to predict breast deformations in a number of applications, including comparison of multimodality images, validation of image registration  ...  This study evaluated the accuracy with which biomechanical breast models based on finite element methods can predict the displacements of tissue within the breast in the practical clinical situation where  ...  One of the authors ͑C.T.͒ was supported by EPSRC GR/ M52779 and MIAS-IRC ͑EPSRC GR/N14248/01, UK MRC D2025/31͒.  ... 
doi:10.1118/1.2198315 pmid:16872083 fatcat:5gjvaqqzfzhana7ffceoyhxojq

Computerized method for nonrigid MR-to-PET breast-image registration

M.Z. Unlu, A. Krol, A. Magri, J.A. Mandel, W. Lee, K.G. Baum, E.D. Lipson, I.L. Coman, D.H. Feiglin
2010 Computers in Biology and Medicine  
Keywords: MR-to-PET nonrigid breast-image registration FEM-based soft tissue multimodality nonrigid image registration a b s t r a c t We have developed and tested a new simple computerized finite element  ...  This method can be easily applied to nonrigid registration of MRI or CT of any type of soft-tissue images to their molecular counterparts such as obtained using PET and SPECT.  ...  Conflict of interest statement None declared  ... 
doi:10.1016/j.compbiomed.2009.10.010 pmid:19942214 fatcat:7wm7nihynra6rpaj4i4r3637he

A nonrigid registration algorithm for longitudinal breast MR images and the analysis of breast tumor response

Xia Li, Benoit M. Dawant, E. Brian Welch, A. Bapsi Chakravarthy, Darla Freehardt, Ingrid Mayer, Mark Kelley, Ingrid Meszoely, John C. Gore, Thomas E. Yankeelov
2009 Magnetic Resonance Imaging  
Dynamic contrast enhanced MRI (DCE-MRI) can estimate parameters relating to blood flow and tissue volume fractions and therefore may be used to characterize the response of breast tumors to treatment.  ...  We also propose a novel method to generate the simulated breast MR images, which can be used to evaluate the proposed registration algorithm quantitatively.  ...  Acknowledgments We thank the National Institutes of Health for funding through NCI 1R01CA129961, NIBIB 1K25 EB005936, and NCI 1P50 098131 and the Vanderbilt-Ingram Cancer Center Institutional Grant (NIH  ... 
doi:10.1016/j.mri.2009.05.007 pmid:19525078 pmcid:PMC2763059 fatcat:ghneb5ycyje4dmsboba3rwupk4

Realization of a biomechanical model-assisted image guidance system for breast cancer surgery using supine MRI

Rebekah H. Conley, Ingrid M. Meszoely, Jared A. Weis, Thomas S. Pheiffer, Lori R. Arlinghaus, Thomas E. Yankeelov, Michael I. Miga
2015 International Journal of Computer Assisted Radiology and Surgery  
Methods Preoperative supine MR images were used to create patient-specific biomechanical models of the breast tissue, chest wall, and tumor.  ...  Rigid registration combined with a novel nonrigid registration routine was used to align the preoperative and intraoperative patient breast and tumor. The registra-B Rebekah H. Conley  ...  Conflict of interest The authors declare that they have no conflict of interest.  ... 
doi:10.1007/s11548-015-1235-9 pmid:26092657 pmcid:PMC4776656 fatcat:76yd5fgb3jhx7m7fk7wfj7du44

2014 Index IEEE Transactions on Medical Imaging Vol. 33

2014 IEEE Transactions on Medical Imaging  
F., +, TMI Dec. 2014 2311-2322 Finite element analysis A Nonlinear Biomechanical Model Based Registration Method for Aligning Prone and Supine MR Breast Images.  ...  Classification of Dynamic Contrast Enhanced MR Images of Cervical Cancers Using Texture Analysis and Support Vector Machines.  ...  MRI Upsampling Using Feature-Based Nonlocal Means Approach. Jafari-Khouzani, K., 1969 -1985 Numerical Surrogates for Human Observers in Myocardial Motion Evaluation From SPECT Images.  ... 
doi:10.1109/tmi.2014.2386278 fatcat:poarfhfto5bm5mhfl7ugwtw4xy

Semiautomated Multimodal Breast Image Registration

Charlotte Curtis, Richard Frayne, Elise Fear
2012 International Journal of Biomedical Imaging  
The algorithm was validated using a numerical phantom then successfully tested on twenty-four image pairs.  ...  This technique was developed and tested using magnetic resonance (MR) images as a reference 3D modality, as MR breast imaging is an established technique in clinical practice.  ...  Validation Using Numerical Phantom As with assessment of registration accuracy, validation of registration methods is a difficult task as a ground truth is generally not available [6] .  ... 
doi:10.1155/2012/890830 pmid:22481910 pmcid:PMC3296303 fatcat:asxsgnkwhzgipbfmuae2mpd2wq
« Previous Showing results 1 — 15 out of 40 results