Coil sensitivity estimation for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging.

Coil sensitivity estimation for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging. Research Abstract Details 

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Coil sensitivity estimation for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging. Abstract Text:

Prashanthi Vemuri,Eugene G Kholmovski,Dennis L Parker,Brian E Chapman,

Magnetic resonance (MR) images can be acquired by multiple receiver coil systems to improve signal-to-noise ratio (SNR) and to decrease acquisition time. The optimal SNR images can be reconstructed from the coil data when the coil sensitivities are known. In typical MR imaging studies, the information about coil sensitivity profiles is not available. In such cases the sum-of-squares (SoS) reconstruction algorithm is usually applied. The intensity of the SoS reconstructed image is modulated by a spatially variable function due to the non-uniformity of coil sensitivities. Additionally, the SoS images also have sub-optimal SNR and bias in image intensity. All these effects might introduce errors when quantitative analysis and/or tissue segmentation are performed on the SoS reconstructed images. In this paper, we present an iterative algorithm for coil sensitivity estimation and demonstrate its applicability for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging.

Coil sensitivity estimation for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging. Publishing Authors By Initials

P Vemuri,EG Kholmovski,DL Parker,BE Chapman,

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Coil sensitivity estimation for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging. Journal Published:

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

Journal: Information processing in medical imaging : procee

VOLUME: 19

Page Numbers: 603-14

Journal Abbreviation:

ISSN: 1011-2499

DAY: 3

MONTH: 12

YEAR: 2005

Coil sensitivity estimation for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging. Information

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LANGUAGE: eng

NlmUniqueID: 9216871

Coil sensitivity estimation for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging. Keywords Mesh Terms:

KEYWORDS: Transducers

MESH TERMS: methods

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Grant and Affiliation Information for Coil sensitivity estimation for optimal SNR reconstruction and intensity inhomogeneity correction in phased array MR imaging.

AFFILIATION: UCAIR, Department of Radiology, University of Utah, SLC, USA. pvemuri@ucair.med.utah.edu

Country: Germany

AGENCY: United States NHLBI

GRANT: R01 HL48223

ACRONYM: HL

MEDLINETA: Inf Process Med Imaging

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