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Using fractional gradient information in non-rigid image registration: application to breast MRI
2012
Medical Imaging 2012: Image Processing
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This work applies fractional differentiation (differentiation to non-integer order) to the gradients determined from image intensities for enhanced image registration. ...
method that incorporates both image intensity and image gradient information to enhance registration performance. ...
[4] [5] [6] Motivated by this work, we apply the technique to non-rigid image registration in order to explore the utility of fractional gradient information for image enhancement prior to and incorporated ...
doi:10.1117/12.911173
dblp:conf/miip/MelbourneCTMHO12
fatcat:gnqlm77eojarrnjrzprfpzvlja
Non-rigid image registration: theory and practice
2004
British Journal of Radiology
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In this paper we discuss the current state of the art of non-rigid registration to put on-going research in context and to highlight current and future clinical applications that might benefit from this ...
The current emphasis is on development and validation of application-specific non-rigid techniques, but there is already a plethora of techniques and terminology in use. ...
Images comprising Figures 2-6 were provided by members of the Computational Imaging Science Group at Guy's Hospital: K Leung, funded by EPSRC and ...
doi:10.1259/bjr/25329214
pmid:15677356
fatcat:fgcrow4uzjf27arer4yb2ifyve
Deformable image registration in radiation therapy
2017
Radiation Oncology Journal
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As a consequence, there have been many studies proposing meaningful applications of imaging data set use. These applications commonly require a method to align the data sets at a reference. ...
DIR identifies the spatial correspondence in order to minimize the differences between two or among multiple sets of images. ...
Non-rigid image registration is also known as deformable image registration (DIR). ...
doi:10.3857/roj.2017.00325
pmid:28712282
pmcid:PMC5518453
fatcat:pyvtjwza25cw7ktfmb6u5wvnlq
Deformable registration for image-guided radiation therapy
2006
Zeitschrift für Medizinische Physik
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The first four sets of examples deal with intrapatient registration: two sections are dedicated to inter-fraction registration (time interval between images in the order of several days), and the other ...
In this paper, we review several applications of deformable registration algorithms in the field of image-guided radiotherapy. Materials and methods. ...
From [80] information from several images using registration methods. ...
doi:10.1078/0939-3889-00327
pmid:17216754
fatcat:bvpgfawz35ezllqwzcwo25dw7u
EP-1283: Hierarchical enhanced non-rigid registration for target volume correction and propagation
2013
Radiotherapy and Oncology
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In this particular setting, motion information is missing in the MV-CT (see figure) and non-negligible registration errors were observed in LR tumor motion (>4.4 mm) with all methods. ...
No significant registration errors have been observed for other motions. ...
Furthermore, the maximal deviation of non-rigid registration was superior to the inter-observer variability in the three directions. ...
doi:10.1016/s0167-8140(15)33589-1
fatcat:g66m2adyzff6jiac7dj2iid7f4
Three-dimensional warping registration of the pelvis and prostate
2002
Medical Imaging 2002: Image Processing
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Among many potential applications of registration, we wish to compare registered MR images acquired before and immediately after RF ablation in order to determine whether a tumor is adequately treated. ...
First, automatic rigid body registration was used to capture the global transformation. Second, local warping registration was applied. ...
ACKNOWLEDGEMENTS The algorithm developed in this research was supported by NIH grants R01-CA-84433-01 and R33-CA-88144-01. ...
doi:10.1117/12.467195
dblp:conf/miip/FeiKW02
fatcat:ugfn55pdafhhhenerbxlgxv2qe
Deformable Medical Image Registration: A Survey
2013
IEEE Transactions on Medical Imaging
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Among its most important applications, one may cite: 1) multi-modality fusion, where information acquired by different imaging devices or protocols is fused to facilitate diagnosis and treatment planning ...
Additional emphasis has been given to techniques applied to medical images. In order to study image registration methods in depth, their main components are identified and studied independently. ...
as transformation functions in non-rigid image registration in [102] . ...
doi:10.1109/tmi.2013.2265603
pmid:23739795
pmcid:PMC3745275
fatcat:svbac4wihzhylmlntlodzrmple
Piecewise-Quadrilateral Registration by Optical Flow – Applications in Contrast-Enhanced MR Imaging of the Breast
[chapter]
2006
Lecture Notes in Computer Science
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In this paper we propose a method for the nonrigid registration of contrast-enhanced dynamic sequences of magnetic resonance(MR) images. ...
We present validation results from a study simulating non-rigid deformation by a biomechanical model of the breast, with simulated uptake of a contrast agent. ...
Acknowledgments We wish to thank Elizabeth Ramsay for assistance in gathering the breast MRI data. ...
doi:10.1007/11866763_84
fatcat:gqvmjiix4nahlimmbhzyduqxfq
A nonrigid registration algorithm for longitudinal breast MR images and the analysis of breast tumor response
2009
Magnetic Resonance Imaging
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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 propose a method whereby DCE-MRI data sets obtained in separate imaging sessions can be co-registered to a common image space, thereby retaining spatial information so that serial DCE-MRI parameter ...
., for many informative discussions. ...
doi:10.1016/j.mri.2009.05.007
pmid:19525078
pmcid:PMC2763059
fatcat:ghneb5ycyje4dmsboba3rwupk4
Nonrigid registration algorithm for longitudinal breast MR images and the preliminary analysis of breast tumor response
2009
Medical Imaging 2009: Image Processing
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Although useful for the detection of breast cancers, conventional imaging methods, including mammography and ultrasonography, do not provide adequate information regarding response to therapy. ...
In this study, a nonrigid registration algorithm is proposed to allow for longitudinal registration of breast MR images obtained throughout the course of treatment. ...
., "Non-rigid registration using free-form deformations: Application to breast MR images," IEEE Trans Med Imag, 18, 712-721 (1999). ...
doi:10.1117/12.811216
dblp:conf/miip/LiDWCFMKMGY09
fatcat:ubzdigymhrcphb75fspkebbm2e
MAP MRF joint segmentation and registration of medical images
2003
Medical Image Analysis
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The outlined approach applies Markov random fields in the solution of a maximum a posteriori model of segmentation and registration. The approach is applied to synthetic and real MRI data. ...
In this paper, we aim to show that more accurate and robust results may be obtained through seeking a joint solution to these linked processes. ...
The registrations obtained from conventional obtained using JS&R (non-rigid) on pairs of adjacent mutual information and the combined JS&R algorithms images with two and three classes, respectively. ...
doi:10.1016/s1361-8415(03)00067-7
pmid:14561557
fatcat:kmo3hwpknfambm5czvotut46z4
Automated registration of sequential breath-hold dynamic contrast-enhanced MR images: a comparison of three techniques
2011
Magnetic Resonance Imaging
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In all 3 methods, a 3-D rigid-body registration scheme with a mutual information similarity measure was used as a pre-processing step. ...
The DCE-MRI phantom images were mathematically deformed to simulate misregistration which was corrected using the 3 schemes. ...
Acknowledgments This work was partly funded by grants from the National Institutes of Health (P01-CA017094 and the IRAT supplement to P30-CA023074). ...
doi:10.1016/j.mri.2011.02.012
pmid:21531108
pmcid:PMC3100446
fatcat:kadb5u72ubd7xaoovhexskv4ei
Automatic CT-ultrasound registration for diagnostic imaging and image-guided intervention
2008
Medical Image Analysis
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We developed new methods that allow one to simulate medical ultrasound from CT in real-time, reproducing the majority of ultrasonic imaging effects. ...
This serves as the foundation of a fully automatic registration, that aligns a 3D ultrasound sweep with the corresponding tomographic modality using a rigid or an affine transformation model, without any ...
In Roche et al. (2001) , image-based registration of MRI to 3DUS is achieved by using both MRI intensity and gradient information in a similarity criterion based on correlation ratio (CR). ...
doi:10.1016/j.media.2008.06.006
pmid:18650121
fatcat:as6yq3e7xvf7va3hfgq3hwqyki
The Accuracy of ADC Measurements in Liver Is Improved by a Tailored and Computationally Efficient Local-Rigid Registration Algorithm
2015
PLoS ONE
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While the non-rigid registration method has the advantages of being applicable on the whole volume and in a fully automatic fashion, the local-rigid registration method is faster while maintaining the ...
Two motion correction methods are compared, one based on non-rigid registration (NRA) using freely available open source algorithms and the other a local-rigid registration (LRA) specifically designed ...
The project software used in this study for data analysis was developed in TINA (http:// www.tina-vision.net) at the University of Manchester. ...
doi:10.1371/journal.pone.0132554
pmid:26204105
pmcid:PMC4512673
fatcat:eaki4vu4yfax3nkycnxullsnje
Spatial registration of temporally separated whole breast 3D ultrasound images
2009
Medical Physics (Lancaster)
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The purpose of this study was to evaluate the potential for use of image volume based registration ͑IVBaR͒ to aid in measurement of changes in the tumor during chemotherapy of breast cancer. ...
Successful IVBaR could aid in the detection of such changes in response to neoadjuvant chemotherapy and potentially be useful for routine breast cancer screening and diagnosis. ...
Previous studies have used information from major blood vessels in Doppler U.S. for fusing with MRI or computed tomography ͑CT͒ images. 46, 47 The aims were to perform and assess the following: ͑1͒ Image ...
doi:10.1118/1.3193678
pmid:19810503
pmcid:PMC2749445
fatcat:fial4dddtvgjvii6lk3efrtzxy
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