Single-point dixon water-fat imaging using 64-channel single echo acquisition MRI

Bum Son Jong, Steven M. Wright, Jim Ji

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This article presents a method for high-speed water-fat imaging using Single-Echo Acquisition (SEA) with an array of 64 localized coil elements and single-point Dixon sequence. The method forms two-dimensional separate water and fat images from a single echo data. Specifically, a channel correlation and region-growing algorithm were developed to extract the phase information from the single echo data, eliminating the need for multiple data acquisition normally required for water/fat separation. Phantom studies on a 4.7 T scanner show that the method can handle large interchannel and cross-channel phase variations, even at relative high data noise levels. Assume that the water and fat are spatially separated and they can be identified by the phase discontinuity caused by the chemical frequency shift, the new method can acquire separate water and fat images without reducing the high frame rates of the SEA imaging method. Although its capability is limited if there are large susceptibility artifacts, disconnected tissues, or pixels with mixed fat and water signals, the new method is potentially useful for dynamic imaging of small animals, where the SEA imaging can provide high imaging speed but may suffer from reduced contrast due to the strong fat signals at short repetition time.

Original languageEnglish
Pages (from-to)152-162
Number of pages11
JournalConcepts in Magnetic Resonance Part B: Magnetic Resonance Engineering
Volume33
Issue number3
DOIs
Publication statusPublished - Aug 2008
Externally publishedYes

Fingerprint

fats
Magnetic resonance imaging
acquisition
echoes
Fats
Imaging techniques
Water
water
Artifacts
scanners
frequency shift
data acquisition
animals
Noise
artifacts
repetition
Data acquisition
discontinuity
Animals
coils

Keywords

  • Parallel imaging
  • Phase-sensitive reconstruction
  • Single-echo acquisition
  • Single-point dixon
  • Water-fat imaging

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Single-point dixon water-fat imaging using 64-channel single echo acquisition MRI. / Jong, Bum Son; Wright, Steven M.; Ji, Jim.

In: Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering, Vol. 33, No. 3, 08.2008, p. 152-162.

Research output: Contribution to journalArticle

@article{b63766b4be3545a490e727cfd2568cc2,
title = "Single-point dixon water-fat imaging using 64-channel single echo acquisition MRI",
abstract = "This article presents a method for high-speed water-fat imaging using Single-Echo Acquisition (SEA) with an array of 64 localized coil elements and single-point Dixon sequence. The method forms two-dimensional separate water and fat images from a single echo data. Specifically, a channel correlation and region-growing algorithm were developed to extract the phase information from the single echo data, eliminating the need for multiple data acquisition normally required for water/fat separation. Phantom studies on a 4.7 T scanner show that the method can handle large interchannel and cross-channel phase variations, even at relative high data noise levels. Assume that the water and fat are spatially separated and they can be identified by the phase discontinuity caused by the chemical frequency shift, the new method can acquire separate water and fat images without reducing the high frame rates of the SEA imaging method. Although its capability is limited if there are large susceptibility artifacts, disconnected tissues, or pixels with mixed fat and water signals, the new method is potentially useful for dynamic imaging of small animals, where the SEA imaging can provide high imaging speed but may suffer from reduced contrast due to the strong fat signals at short repetition time.",
keywords = "Parallel imaging, Phase-sensitive reconstruction, Single-echo acquisition, Single-point dixon, Water-fat imaging",
author = "Jong, {Bum Son} and Wright, {Steven M.} and Jim Ji",
year = "2008",
month = "8",
doi = "10.1002/cmr.b.20120",
language = "English",
volume = "33",
pages = "152--162",
journal = "Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering",
issn = "1552-5031",
publisher = "Wiley-Liss Inc.",
number = "3",

}

TY - JOUR

T1 - Single-point dixon water-fat imaging using 64-channel single echo acquisition MRI

AU - Jong, Bum Son

AU - Wright, Steven M.

AU - Ji, Jim

PY - 2008/8

Y1 - 2008/8

N2 - This article presents a method for high-speed water-fat imaging using Single-Echo Acquisition (SEA) with an array of 64 localized coil elements and single-point Dixon sequence. The method forms two-dimensional separate water and fat images from a single echo data. Specifically, a channel correlation and region-growing algorithm were developed to extract the phase information from the single echo data, eliminating the need for multiple data acquisition normally required for water/fat separation. Phantom studies on a 4.7 T scanner show that the method can handle large interchannel and cross-channel phase variations, even at relative high data noise levels. Assume that the water and fat are spatially separated and they can be identified by the phase discontinuity caused by the chemical frequency shift, the new method can acquire separate water and fat images without reducing the high frame rates of the SEA imaging method. Although its capability is limited if there are large susceptibility artifacts, disconnected tissues, or pixels with mixed fat and water signals, the new method is potentially useful for dynamic imaging of small animals, where the SEA imaging can provide high imaging speed but may suffer from reduced contrast due to the strong fat signals at short repetition time.

AB - This article presents a method for high-speed water-fat imaging using Single-Echo Acquisition (SEA) with an array of 64 localized coil elements and single-point Dixon sequence. The method forms two-dimensional separate water and fat images from a single echo data. Specifically, a channel correlation and region-growing algorithm were developed to extract the phase information from the single echo data, eliminating the need for multiple data acquisition normally required for water/fat separation. Phantom studies on a 4.7 T scanner show that the method can handle large interchannel and cross-channel phase variations, even at relative high data noise levels. Assume that the water and fat are spatially separated and they can be identified by the phase discontinuity caused by the chemical frequency shift, the new method can acquire separate water and fat images without reducing the high frame rates of the SEA imaging method. Although its capability is limited if there are large susceptibility artifacts, disconnected tissues, or pixels with mixed fat and water signals, the new method is potentially useful for dynamic imaging of small animals, where the SEA imaging can provide high imaging speed but may suffer from reduced contrast due to the strong fat signals at short repetition time.

KW - Parallel imaging

KW - Phase-sensitive reconstruction

KW - Single-echo acquisition

KW - Single-point dixon

KW - Water-fat imaging

UR - http://www.scopus.com/inward/record.url?scp=55049098321&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=55049098321&partnerID=8YFLogxK

U2 - 10.1002/cmr.b.20120

DO - 10.1002/cmr.b.20120

M3 - Article

AN - SCOPUS:55049098321

VL - 33

SP - 152

EP - 162

JO - Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering

JF - Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering

SN - 1552-5031

IS - 3

ER -