A field map estimation strategy without the noise-bandwidth tradeoff

Joseph Dagher, Ali Bilgin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a joint acquisition-processing solution to the problem of field map estimation. Our acquisition method captures data at three echo times carefully chosen to yield optimal field map estimation using the corresponding algorithm. We show that, over an arbitrary spectral range of inhomogeneity values, our method is not subject to the traditional noise-bandwidth tradeoff. The resulting implications include: improved robustness, enhanced spectral estimation and eliminating the need for spatial phase unwrapping. Our simulations show factors of improvement in the quality of field map estimates, as compared to existing methods. Our phantom data confirms these impressive gains.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8314
DOIs
StatePublished - 2012
EventMedical Imaging 2012: Image Processing - San Diego, CA, United States
Duration: Feb 6 2012Feb 9 2012

Other

OtherMedical Imaging 2012: Image Processing
CountryUnited States
CitySan Diego, CA
Period2/6/122/9/12

Fingerprint

tradeoffs
Noise
bandwidth
Bandwidth
acquisition
Quality Improvement
Data acquisition
echoes
inhomogeneity
Joints
estimates
Processing
simulation

Keywords

  • Distortion
  • Field inhomogeneity
  • Field map estimation
  • MRI

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Dagher, J., & Bilgin, A. (2012). A field map estimation strategy without the noise-bandwidth tradeoff. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 8314). [831449] https://doi.org/10.1117/12.911026

A field map estimation strategy without the noise-bandwidth tradeoff. / Dagher, Joseph; Bilgin, Ali.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8314 2012. 831449.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dagher, J & Bilgin, A 2012, A field map estimation strategy without the noise-bandwidth tradeoff. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 8314, 831449, Medical Imaging 2012: Image Processing, San Diego, CA, United States, 2/6/12. https://doi.org/10.1117/12.911026
Dagher J, Bilgin A. A field map estimation strategy without the noise-bandwidth tradeoff. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8314. 2012. 831449 https://doi.org/10.1117/12.911026
Dagher, Joseph ; Bilgin, Ali. / A field map estimation strategy without the noise-bandwidth tradeoff. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8314 2012.
@inproceedings{74f8382b93ea4d9e9b06b9f8d5274479,
title = "A field map estimation strategy without the noise-bandwidth tradeoff",
abstract = "We propose a joint acquisition-processing solution to the problem of field map estimation. Our acquisition method captures data at three echo times carefully chosen to yield optimal field map estimation using the corresponding algorithm. We show that, over an arbitrary spectral range of inhomogeneity values, our method is not subject to the traditional noise-bandwidth tradeoff. The resulting implications include: improved robustness, enhanced spectral estimation and eliminating the need for spatial phase unwrapping. Our simulations show factors of improvement in the quality of field map estimates, as compared to existing methods. Our phantom data confirms these impressive gains.",
keywords = "Distortion, Field inhomogeneity, Field map estimation, MRI",
author = "Joseph Dagher and Ali Bilgin",
year = "2012",
doi = "10.1117/12.911026",
language = "English (US)",
isbn = "9780819489630",
volume = "8314",
booktitle = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",

}

TY - GEN

T1 - A field map estimation strategy without the noise-bandwidth tradeoff

AU - Dagher, Joseph

AU - Bilgin, Ali

PY - 2012

Y1 - 2012

N2 - We propose a joint acquisition-processing solution to the problem of field map estimation. Our acquisition method captures data at three echo times carefully chosen to yield optimal field map estimation using the corresponding algorithm. We show that, over an arbitrary spectral range of inhomogeneity values, our method is not subject to the traditional noise-bandwidth tradeoff. The resulting implications include: improved robustness, enhanced spectral estimation and eliminating the need for spatial phase unwrapping. Our simulations show factors of improvement in the quality of field map estimates, as compared to existing methods. Our phantom data confirms these impressive gains.

AB - We propose a joint acquisition-processing solution to the problem of field map estimation. Our acquisition method captures data at three echo times carefully chosen to yield optimal field map estimation using the corresponding algorithm. We show that, over an arbitrary spectral range of inhomogeneity values, our method is not subject to the traditional noise-bandwidth tradeoff. The resulting implications include: improved robustness, enhanced spectral estimation and eliminating the need for spatial phase unwrapping. Our simulations show factors of improvement in the quality of field map estimates, as compared to existing methods. Our phantom data confirms these impressive gains.

KW - Distortion

KW - Field inhomogeneity

KW - Field map estimation

KW - MRI

UR - http://www.scopus.com/inward/record.url?scp=84860776738&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84860776738&partnerID=8YFLogxK

U2 - 10.1117/12.911026

DO - 10.1117/12.911026

M3 - Conference contribution

AN - SCOPUS:84860776738

SN - 9780819489630

VL - 8314

BT - Progress in Biomedical Optics and Imaging - Proceedings of SPIE

ER -