k-space inherited parallel acquisition (KIPA): application on dynamic magnetic resonance imaging thermometry.

k-space inherited parallel acquisition (KIPA): application on dynamic magnetic resonance imaging thermometry. Research Abstract Details 

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k-space inherited parallel acquisition (KIPA): application on dynamic magnetic resonance imaging thermometry. Abstract Text:

Jun-Yu Guo,Eugene G Kholmovski,Ling Zhang,Eun-Kee Jeong,Dennis L Parker,

In this study, a novel method for dynamic parallel image acquisition and reconstruction is presented. In this method, called k-space inherited parallel acquisition (KIPA), localized reconstruction coefficients are used to achieve higher reduction factors, and lower noise and artifact levels compared to that of generalized autocalibrating partially parallel acquisition (GRAPPA) reconstruction. In KIPA, the full k-space for the first frame and the partial k-space for later frames are required to reconstruct a whole series of images. Reconstruction coefficients calculated for different segments of k-space from the first frame data set are used to estimate missing k-space lines in corresponding k-space segments of other frames. The local determination of KIPA reconstruction coefficients is essential to adjusting them according to the local signal-to-noise ratio characteristics of k-space data. The proposed algorithm is applicable to dynamic imaging with arbitrary k-space sampling trajectories. Simulations of magnetic resonance thermometry using the KIPA method with a reduction factor of 6 and using dynamic imaging studies of human subjects with reduction factors of 4 and 6 have been performed to prove the feasibility of our method and to show apparent improvement in image quality in comparison with GRAPPA for dynamic imaging.

k-space inherited parallel acquisition (KIPA): application on dynamic magnetic resonance imaging thermometry. Publishing Authors By Initials

JY Guo,EG Kholmovski,L Zhang,EK Jeong,DL Parker,

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k-space inherited parallel acquisition (KIPA): application on dynamic magnetic resonance imaging thermometry. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Magnetic resonance imaging

VOLUME: 24

Page Numbers: 903-15

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ISSN: 0730-725X

DAY: 27

MONTH: 04

YEAR: 2006

k-space inherited parallel acquisition (KIPA): application on dynamic magnetic resonance imaging thermometry. Information

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LANGUAGE: eng

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AFFILIATION: Department of Physics, University of Utah, Salt Lake City, UT 84108, USA. jguo@ucair.med.utah.edu

Country: United States

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MEDLINETA: Magn Reson Imaging

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