Title :
An efficient Newton-Raphson algorithm for T1 parametric image estimation with MR spin-echo acquisitions
Author :
Erbland, E. ; Bonny, J.M. ; Boire, J.-Y. ; Veyre, A. ; Zanca, M.
Author_Institution :
Inst. Nat. de la Sante et de la Recherche Med., Clermont-Ferrand, France
Abstract :
The calculation of accurate T1 parametric image is performed by collecting a series of spin-echo images with different T1 weightings (variable repetition times). This relaxation time must be estimated by non-linear fitting for each pixel. The aim of this work is to propose an efficient algorithm, based on Newton-Raphson principle, which reduces calculation time by three in comparison with the traditional Newton-Raphson one
Keywords :
Newton-Raphson method; biomedical NMR; nuclear spin-lattice relaxation; MR spin-echo acquisitions; T1 parametric image estimation; accurate T1 parametric image; calculation time reduction; efficient Newton-Raphson algorithm; magnetic resonance imaging; medical diagnostic imaging; nonlinear fitting; spin-echo images series; variable repetition times; Brain; Computational modeling; Fitting; Image converters; Iterative algorithms; Iterative methods; Noise reduction; Pixel; Shape;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.411899
