Title :
A New Method for Data Acquisition and Image Reconstruction in Parallel Magnetic Resonance Imaging
Author :
Ahmed, H.M. ; Gabr, R.E. ; Kadah, Y.M. ; Youssef, A.M.
Author_Institution :
Dept. of Biomed. Eng., Cairo Univ., Giza
Abstract :
We propose a novel data acquisition and image reconstruction method for parallel magnetic resonance imaging (MRI). The proposed method improves the GRAPPA (Generalized Auto-calibrating Partially Parallel Acquisitions) method by simultaneously collecting data using the body coil in addition to localized surface coils. The body coil data is included in the GRAPPA reconstruction as an additional coil. The reconstructed body coil image shows greater uniformity over the field of view than the conventional sum-of-squares reconstruction that is conventionally used with GRAPPA. The body coil image can also be used to correct for spatial inhomogeneity in the sum-of-squares image. The proposed method is tested using numerical and real MRI phantom data.
Keywords :
biomedical MRI; coils; data acquisition; image reconstruction; medical image processing; phantoms; GRAPPA method; MRI phantom data; data acquisition; generalized auto-calibrating partially parallel acquisition; image reconstruction; localized surface coil; parallel magnetic resonance imaging; reconstructed body coil image; sum-of-squares image; Biomedical engineering; Coils; Data acquisition; Image reconstruction; Magnetic resonance imaging; Niobium; Nonuniform electric fields; Radio frequency; Surface reconstruction; Testing;
Conference_Titel :
Biomedical Engineering Conference, 2008. CIBEC 2008. Cairo International
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-2694-2
Electronic_ISBN :
978-1-4244-2695-9
DOI :
10.1109/CIBEC.2008.4786092
