Results 1 - 10 of 9,493

Sparse MRI: The Application of Compressed Sensing for Rapid MR Imaging

by Michael Lustig, David Donoho, John M. Pauly - MAGNETIC RESONANCE IN MEDICINE 58:1182–1195 , 2007
"... The sparsity which is implicit in MR images is exploited to significantly undersample k-space. Some MR images such as angiograms are already sparse in the pixel representation; other, more complicated images have a sparse representation in some transform domain–for example, in terms of spatial finit ..."
Abstract - Cited by 538 (11 self) - Add to MetaCart
The sparsity which is implicit in MR images is exploited to significantly undersample k-space. Some MR images such as angiograms are already sparse in the pixel representation; other, more complicated images have a sparse representation in some transform domain–for example, in terms of spatial

Segmentation of brain MR images through a hidden Markov random field model and the expectation-maximization algorithm

by Yongyue Zhang, Michael Brady, Stephen Smith - IEEE TRANSACTIONS ON MEDICAL. IMAGING , 2001
"... The finite mixture (FM) model is the most commonly used model for statistical segmentation of brain magnetic resonance (MR) images because of its simple mathematical form and the piecewise constant nature of ideal brain MR images. However, being a histogram-based model, the FM has an intrinsic limi ..."
Abstract - Cited by 639 (15 self) - Add to MetaCart
The finite mixture (FM) model is the most commonly used model for statistical segmentation of brain magnetic resonance (MR) images because of its simple mathematical form and the piecewise constant nature of ideal brain MR images. However, being a histogram-based model, the FM has an intrinsic

Nonrigid registration using free-form deformations: Application to breast MR images

by D. Rueckert, L. I. Sonoda, C. Hayes, D. L. G. Hill, M. O. Leach, D. J. Hawkes - IEEE Transactions on Medical Imaging , 1999
"... Abstract — In this paper we present a new approach for the nonrigid registration of contrast-enhanced breast MRI. A hierarchical transformation model of the motion of the breast has been developed. The global motion of the breast is modeled by an affine transformation while the local breast motion i ..."
Abstract - Cited by 697 (36 self) - Add to MetaCart
of the cost associated with the smoothness of the transformation and the cost associated with the image similarity. The algorithm has been applied to the fully automated registration of three-dimensional (3-D) breast MRI in volunteers and patients. In particular, we have compared the results of the proposed

Efficient MR Image Reconstruction for Compressed MR Imaging

by Junzhou Huang, Shaoting Zhang, Dimitris Metaxas
"... Abstract. In this paper, we propose an efficient algorithm for MR image reconstruction. The algorithm minimizes a linear combination of three terms corresponding to a least square data fitting, total variation (TV) and L1 norm regularization. This has been shown to be very powerful for the MR image ..."
Abstract - Cited by 24 (16 self) - Add to MetaCart
Abstract. In this paper, we propose an efficient algorithm for MR image reconstruction. The algorithm minimizes a linear combination of three terms corresponding to a least square data fitting, total variation (TV) and L1 norm regularization. This has been shown to be very powerful for the MR image

MR Imaging of Pulmonary Arterial Hypertension and

by Richard D White, Pulmonary Emboli , 2016
"... MR imaging of pulmonary arterial hypertension and pulmonary emboli ..."
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MR imaging of pulmonary arterial hypertension and pulmonary emboli

MR Imaging

by From The Dep, Michael T. Zagardo, Carl B. Shanholtz
"... are mg/dL, glucose of 73 mg/dL, and no evidence of leukemic cells. A cytospin prep mal cells seen. zoster virus ant clear antibodies bacterial culture eral blood cytom nocompetent ses of menin-e onset of ill-ion is usually fatalities have nocompetent ..."
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are mg/dL, glucose of 73 mg/dL, and no evidence of leukemic cells. A cytospin prep mal cells seen. zoster virus ant clear antibodies bacterial culture eral blood cytom nocompetent ses of menin-e onset of ill-ion is usually fatalities have nocompetent

Automated model-based tissue classification of MR images of the brain

by Koen Van Leemput, Frederik Maes, Dirk Vandermeulen, Paul Suetens , 1999
"... We describe a fully automated method for model-based tissue classification of Magnetic Resonance (MR) images of the brain. The method interleaves classification with estimation of the model parameters, improving the classification at each iteration. The algorithm is able to segment single- and multi ..."
Abstract - Cited by 214 (14 self) - Add to MetaCart
We describe a fully automated method for model-based tissue classification of Magnetic Resonance (MR) images of the brain. The method interleaves classification with estimation of the model parameters, improving the classification at each iteration. The algorithm is able to segment single

Evaluation of Platybasia with MR Imaging

by Robert A. Koenigsberg, Nakul Vakil, Tom A. Hong, Tun Htaik, Eric Faerber, Tina Maiorano, Monica Dua, Scott Faro, Carlos Gonzales
"... first measured on plain skull images. At present, evaluation of the brain and skull more commonly involves CT and MR imaging. We evaluated a new MR imaging method of evaluating platybasia. METHODS: We retrospectively evaluated midline sagittal MR images in 200 adults and 50 children. The basal angle ..."
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first measured on plain skull images. At present, evaluation of the brain and skull more commonly involves CT and MR imaging. We evaluated a new MR imaging method of evaluating platybasia. METHODS: We retrospectively evaluated midline sagittal MR images in 200 adults and 50 children. The basal

MR Imaging and MR Spectroscopy in

by Rhizomelic Chondrodysplasia Punctata, Sylviane Confort-gouny, Brigitte Chabrol, Charles Raybaud, Francisca Vintila, Patrick J. Cozzone
"... Summary: A case of rhizomelic chondrodysplasia punctata was investigated with MR imaging of the brain and hydro-gen-1 MR spectroscopy of the brain and blood. Areas with abnormal signal hyperintensity on T2-weighted images or hypointensity on T1-weighted images were detected in the subcortical white ..."
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Summary: A case of rhizomelic chondrodysplasia punctata was investigated with MR imaging of the brain and hydro-gen-1 MR spectroscopy of the brain and blood. Areas with abnormal signal hyperintensity on T2-weighted images or hypointensity on T1-weighted images were detected in the subcortical white

MR Imaging of Large Multinodular

by Steen J. Bonnema, Peter B. Andersen, Dorthe U. Knudsen, S. J. Bonnema , 2001
"... OBJECTIVE. MR imaging and sonography are considered to be among the most reliable methods available for estimating goiter volume. Our aim was to assess the observer variability of MR imaging for estimating the volume of a large multinodular goiter and the dimensions of the related trachea. Additiona ..."
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OBJECTIVE. MR imaging and sonography are considered to be among the most reliable methods available for estimating goiter volume. Our aim was to assess the observer variability of MR imaging for estimating the volume of a large multinodular goiter and the dimensions of the related trachea
Results 1 - 10 of 9,493