Self-navigated interleaved spiral (SNAILS)

Application to high-resolution diffusion tensor imaging

Chunlei Liu, Roland Bammer, Dong Hyun Kim, Michael E. Moseley

Research output: Contribution to journalArticle

162 Citations (Scopus)

Abstract

A fat-saturated twice-refocused spin echo sequence was implemented on a GE Signa 1.5-T whole-body system for diffusion-weighted imaging. Data were acquired using an analytically designed interleaved variable-density (VD) spiral readout trajectory. This flexible design algorithm allowed real-time prescription on the scanner. Each interleaf of the VD spiral oversampled the center of k-space. The oversampling provided an inherent motion compensation capability. The resultant diffusion-weighted images showed good quality without any retrospective motion correction. An iterated motion correction algorithm was developed to further reduce the signal cancellation artifact caused by motion-induced phase error. In this algorithm, a low-resolution phase map was estimated using the oversampled data in the center of k-space in order to correct for phase error in image space. In vivo diffusion tensor imaging (DTI) studies were performed on the brains of healthy volunteers. High-quality isotropic diffusion-weighted images, trace maps, and FA maps from axial, sagittal, and coronal slices were obtained using a VD spiral readout trajectory with matrix size 256 × 256. To our knowledge, this was also the first time in vivo 512 × 512 DTI results were reported.

Original languageEnglish
Pages (from-to)1388-1396
Number of pages9
JournalMagnetic Resonance in Medicine
Volume52
Issue number6
DOIs
Publication statusPublished - 2004 Dec 1

Fingerprint

Diffusion Tensor Imaging
Artifacts
Prescriptions
Healthy Volunteers
Fats
Brain

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Liu, Chunlei ; Bammer, Roland ; Kim, Dong Hyun ; Moseley, Michael E. / Self-navigated interleaved spiral (SNAILS) : Application to high-resolution diffusion tensor imaging. In: Magnetic Resonance in Medicine. 2004 ; Vol. 52, No. 6. pp. 1388-1396.
@article{9b18c29ca5b041718ea2eb53ee54cea5,
title = "Self-navigated interleaved spiral (SNAILS): Application to high-resolution diffusion tensor imaging",
abstract = "A fat-saturated twice-refocused spin echo sequence was implemented on a GE Signa 1.5-T whole-body system for diffusion-weighted imaging. Data were acquired using an analytically designed interleaved variable-density (VD) spiral readout trajectory. This flexible design algorithm allowed real-time prescription on the scanner. Each interleaf of the VD spiral oversampled the center of k-space. The oversampling provided an inherent motion compensation capability. The resultant diffusion-weighted images showed good quality without any retrospective motion correction. An iterated motion correction algorithm was developed to further reduce the signal cancellation artifact caused by motion-induced phase error. In this algorithm, a low-resolution phase map was estimated using the oversampled data in the center of k-space in order to correct for phase error in image space. In vivo diffusion tensor imaging (DTI) studies were performed on the brains of healthy volunteers. High-quality isotropic diffusion-weighted images, trace maps, and FA maps from axial, sagittal, and coronal slices were obtained using a VD spiral readout trajectory with matrix size 256 × 256. To our knowledge, this was also the first time in vivo 512 × 512 DTI results were reported.",
author = "Chunlei Liu and Roland Bammer and Kim, {Dong Hyun} and Moseley, {Michael E.}",
year = "2004",
month = "12",
day = "1",
doi = "10.1002/mrm.20288",
language = "English",
volume = "52",
pages = "1388--1396",
journal = "Magnetic Resonance in Medicine",
issn = "0740-3194",
publisher = "John Wiley and Sons Inc.",
number = "6",

}

Self-navigated interleaved spiral (SNAILS) : Application to high-resolution diffusion tensor imaging. / Liu, Chunlei; Bammer, Roland; Kim, Dong Hyun; Moseley, Michael E.

In: Magnetic Resonance in Medicine, Vol. 52, No. 6, 01.12.2004, p. 1388-1396.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Self-navigated interleaved spiral (SNAILS)

T2 - Application to high-resolution diffusion tensor imaging

AU - Liu, Chunlei

AU - Bammer, Roland

AU - Kim, Dong Hyun

AU - Moseley, Michael E.

PY - 2004/12/1

Y1 - 2004/12/1

N2 - A fat-saturated twice-refocused spin echo sequence was implemented on a GE Signa 1.5-T whole-body system for diffusion-weighted imaging. Data were acquired using an analytically designed interleaved variable-density (VD) spiral readout trajectory. This flexible design algorithm allowed real-time prescription on the scanner. Each interleaf of the VD spiral oversampled the center of k-space. The oversampling provided an inherent motion compensation capability. The resultant diffusion-weighted images showed good quality without any retrospective motion correction. An iterated motion correction algorithm was developed to further reduce the signal cancellation artifact caused by motion-induced phase error. In this algorithm, a low-resolution phase map was estimated using the oversampled data in the center of k-space in order to correct for phase error in image space. In vivo diffusion tensor imaging (DTI) studies were performed on the brains of healthy volunteers. High-quality isotropic diffusion-weighted images, trace maps, and FA maps from axial, sagittal, and coronal slices were obtained using a VD spiral readout trajectory with matrix size 256 × 256. To our knowledge, this was also the first time in vivo 512 × 512 DTI results were reported.

AB - A fat-saturated twice-refocused spin echo sequence was implemented on a GE Signa 1.5-T whole-body system for diffusion-weighted imaging. Data were acquired using an analytically designed interleaved variable-density (VD) spiral readout trajectory. This flexible design algorithm allowed real-time prescription on the scanner. Each interleaf of the VD spiral oversampled the center of k-space. The oversampling provided an inherent motion compensation capability. The resultant diffusion-weighted images showed good quality without any retrospective motion correction. An iterated motion correction algorithm was developed to further reduce the signal cancellation artifact caused by motion-induced phase error. In this algorithm, a low-resolution phase map was estimated using the oversampled data in the center of k-space in order to correct for phase error in image space. In vivo diffusion tensor imaging (DTI) studies were performed on the brains of healthy volunteers. High-quality isotropic diffusion-weighted images, trace maps, and FA maps from axial, sagittal, and coronal slices were obtained using a VD spiral readout trajectory with matrix size 256 × 256. To our knowledge, this was also the first time in vivo 512 × 512 DTI results were reported.

UR - http://www.scopus.com/inward/record.url?scp=10044240735&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=10044240735&partnerID=8YFLogxK

U2 - 10.1002/mrm.20288

DO - 10.1002/mrm.20288

M3 - Article

VL - 52

SP - 1388

EP - 1396

JO - Magnetic Resonance in Medicine

JF - Magnetic Resonance in Medicine

SN - 0740-3194

IS - 6

ER -