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Adaptive data acquisition in MRI


, : Adaptive data acquisition in MRI. Magnetic Resonance Imaging 19(1): 59-71

We propose an adaptive data acquisition technique that depends on the object to be imaged in magnetic resonance (MR) imaging. In this paper, we employed a matching pursuit (MP) algorithm to achieve the adaptive data acquisition. Since the matching pursuit is a greedy algorithm to find RF and gradient waveforms which are the best match for an object-signal, the signal can be decomposed with a few iterations and thereby lead reduction of imaging time in MR. To adopt the matching pursuit algorithm to the adaptive data acquisition in MRI, we have designed a dictionary which contains a windowed Fourier basis set. Because the basis set is localized spatially, the image signal could be divided into segmented signals so that matching pursuit with the segmented signals could lead to effective and object-dependent data acquisition. To verify the proposed technique, computer simulations and experiments are performed with a 1.0 T whole body MRI system.

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PMID: 11295348


Other references

Deri, P., 1982: Cariologia di una popolazione di Dugesia benazzii (triclade paludicolo) con B-cromosomi. Atti della Societa Toscana di Scienze Naturali Residente in Pisa Memorie Serie B. 1981 ; 88: 49-60

Jeong, H-Gon.; Satchell, K.J.F., 2012: Additive function of Vibrio vulnificus MARTX(Vv) and VvhA cytolysins promotes rapid growth and epithelial tissue necrosis during intestinal infection. Vibrio vulnificus is a pathogen that causes both severe necrotizing wound infections and life-threatening food-borne infections. Food-borne infection is particularly lethal as the infection can progress rapidly to primary septicemia resulting in d...

Kyriakidis, I.; Katsaris, S., 2016: A retrospective study of paediatric road traffic injuries in Greece: Focus on weekends. Injury 47(11): 2598-2599

Kuznetsov E.V., 1973: Daily biological rhythms of some frogs in the connection with exogenous and endogenous factors determining them. Vestnik Moskovskogo Universiteta Seriya VI Biologiya Pochvovedenie 28(6): 14-17

Fan Ximo; Clifford Paul M., 1993: Tectonic implication of the structural studies in the Killarney igneous complex, Ontario, Canada. Abstracts with Programs - Geological Society of America 25(6): 168

de Melo-Martín, I.; Sondhi, D.; Crystal, R.G., 2012: When ethics constrains clinical research: trial design of control arms in "greater than minimal risk" pediatric trials. For more than three decades clinical research in the United States has been explicitly guided by the idea that ethical considerations must be central to research design and practice. In spite of the centrality of this idea, attempting to balance t...

Leistner O.A., 1991: Steganotaenia araliacea transvaal botswana namibia to ethiopia and senegal. Flowering Plants of Africa 51(2)

Leopold, L.H.; Berger, M.S.; Cheng, S-Chun.; Cortes-Franco, J.E.; Giles, F.J.; Estey, E.H., 2005: Comparative efficacy and safety of gemtuzumab ozogamicin monotherapy and high-dose cytarabine combination therapy in patients with acute myeloid leukemia in first relapse. Gemtuzumab ozogamicin was recently approved in the United States for the treatment of older patients with CD33-positive acute myeloid leukemia (AML) in first relapse. However, the lack of randomized clinical trials makes it so difficult to determi...

Ebata, S.; Koseki, Y., 1954: A statistic study of malignant tumors during recent five years in department of pathology, Sapporo University of Medicine. This report deals with a statistical study of malignant tumors based on 467 consecutive autopsy materials during the recent 5 years and on 186 biopsy materials of the malignant tumors at the Department of Pathology, Sapporo University of Medicine....

D.Esclapon, G. de R., 1976: The fig and its future in the south of France. The fig is suggested as a good alternative crop to apples or pears, which are being overproduced in the South of France. Soil preparation, cultivation, pruning, caprification (where necessary), varieties, pests and diseases and harvesting are desc...