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Titolo:
Spatial transformations of diffusion tensor magnetic resonance images
Autore:
Alexander, DC; Pierpaoli, C; Basser, PJ; Gee, JC;
Indirizzi:
Univ Coll London, Dept Comp Sci, London WC1E 6BT, England Univ Coll London London England WC1E 6BT p Sci, London WC1E 6BT, England NICHHD, Sect Tissue Biophys & Biomimet, Lab Integrat & Med Biophys, NIH, Bethesda, MD 20892 USA NICHHD Bethesda MD USA 20892 t & Med Biophys, NIH, Bethesda, MD 20892 USA Univ Penn, Dept Radiol, Philadelphia, PA 19104 USA Univ Penn PhiladelphiaPA USA 19104 pt Radiol, Philadelphia, PA 19104 USA
Titolo Testata:
IEEE TRANSACTIONS ON MEDICAL IMAGING
fascicolo: 11, volume: 20, anno: 2001,
pagine: 1131 - 1139
SICI:
0278-0062(200111)20:11<1131:STODTM>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
MR;
Keywords:
diffusion tensor magnetic resonance imaging; DTI; DT-MRI; image processing; registration; spatial transformation; warp;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Alexander, DC Univ Coll London, Dept Comp Sci, Gower St, London WC1E 6BT, England Univ Coll London Gower St London England WC1E 6BT , England
Citazione:
D.C. Alexander et al., "Spatial transformations of diffusion tensor magnetic resonance images", IEEE MED IM, 20(11), 2001, pp. 1131-1139

Abstract

We address the problem of applying spatial transformations (or "image warps") to diffusion tensor magnetic resonance images. The orientational information that these images contain must be handled appropriately when they aretransformed spatially during image registration. We present solutions for global transformations of three-dimensional images up to 12-parameter affine complexity and indicate how our methods can be extended for higher order transformations. Several approaches are presented and tested using synthetic data. One method, the preservation of principal direction algorithm, which takes into account shearing, stretching and rigid rotation, is shown to be the most effective. Additional registration experiments are performed on human brain data obtained from a single subject, whose head was imaged in three different orientations within the scanner. All of our methods improve the consistency between registered and target images over naive warping algorithms.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 17:07:44