MRI fast tree log scanning with helical undersampled projection acquisitions

Contreras, I; Guesalga, A; Fernandez, MP; Guarini, M.; Irarrázaval P.

Abstract

Magnetic Resonance Imaging opens an alternative way to analyze wood structures using a non-destructive technology. It provides high resolution, compound-based contrast manipulation and increased data acquisition flexibility. The technique is particularly useful for tree logs, since they present several characteristics that can be used to reduce the long scan time. This study proposes a method that takes advantage of the log cylindrical symmetry, acquiring transverse 1-D projections with a helical and undersampled pattern. Linear interpolation is used to estimate the skipped data and slice images are reconstructed by filtered backprojection. The sequence is improved using selective multi-pass scanning, without major variations of the scan time. Computer simulations and experimental results show that the proposed technique can increase the scan speed by a factor of 6, while maintaining the ability to identify typical tree log characteristics. © 2002 Elsevier Science Inc. All rights reserved.

Más información

Título según WOS: MRI fast tree log scanning with helical undersampled projection acquisitions
Título según SCOPUS: MRI fast tree log scanning with helical undersampled projection acquisitions
Título de la Revista: MAGNETIC RESONANCE IMAGING
Volumen: 20
Número: 10
Editorial: Elsevier Science Inc.
Fecha de publicación: 2002
Página de inicio: 781
Página final: 787
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S0730725X02006021
DOI:

10.1016/S0730-725X(02)00602-1

Notas: ISI, SCOPUS