Time-domain quantification of amplitude, chemical shift, apparent relaxation time T2, and phase by wavelet-transform analysis. Application to biomedical magnetic resonance spectroscopy.
Serrai, Hacene ; Senhadji, Lotfi ; De Certaines, Jacques, ; Coatrieux, Jean-Louis
HAL, inserm-00130048 / Harvested from HAL
Text on HAL
The wavelet-transform method is used to quantify the magnetic resonance spectroscopy (MRS) parameters: chemical shift, apparent relaxation time T2, resonance amplitude, and phase. Wavelet transformation is a time-frequency representation which separates each component from the FID, then successively quantifies it and subtracts it from the raw signal. Two iterative procedures have been developed. They have been combined with a nonlinear regression analysis method and tested on both simulated and real sets of biomedical MRS data selected with respect to the main problems usually encountered in quantifying biomedical MRS, specifically "chemical noise," resulting from overlapping resonances, and baseline distortion. The results indicate that the wavelet-transform method can provide efficient and accurate quantification of MRS data.
Publié le : 1997-01-05
Classification:  Wavelets,  Wavelet Transform,  NMR,  NMRS,  Spectroscopy,  CWT,  Time-frequency,  MESH: Algorithms,  MESH: Fourier Analysis,  MESH: Nuclear Magnetic Resonance, Biomolecular,  MESH: Regression Analysis,  MESH: Signal Processing, Computer-Assisted,  [MATH.MATH-RT]Mathematics [math]/Representation Theory [math.RT],  [SDV.IB]Life Sciences [q-bio]/Bioengineering,  [MATH.MATH-MP]Mathematics [math]/Mathematical Physics [math-ph],  [PHYS.MPHY]Physics [physics]/Mathematical Physics [math-ph],  [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing,  [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging,  [SDV.IB.MN]Life Sciences [q-bio]/Bioengineering/Nuclear medicine,  [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing 
@article{inserm-00130048,
     author = {Serrai, Hacene and Senhadji, Lotfi and De Certaines, Jacques,  and Coatrieux, Jean-Louis},
     title = {Time-domain quantification of amplitude, chemical shift, apparent relaxation time T2, and phase by wavelet-transform analysis. Application to biomedical magnetic resonance spectroscopy.},
     journal = {HAL},
     volume = {1997},
     number = {0},
     year = {1997},
     language = {en},
     url = {http://dml.mathdoc.fr/item/inserm-00130048}
}

Serrai, Hacene; Senhadji, Lotfi; De Certaines, Jacques, ; Coatrieux, Jean-Louis. Time-domain quantification of amplitude, chemical shift, apparent relaxation time T2, and phase by wavelet-transform analysis. Application to biomedical magnetic resonance spectroscopy.. HAL, Tome 1997 (1997) no. 0, . http://gdmltest.u-ga.fr/item/inserm-00130048/