Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Reduction of respiratory ghosting motion artifacts in conventional two-dimensional multi-slice Cartesian turbo spin-echo: which k-space filling order is the best?

Reduction of respiratory ghosting motion artifacts in conventional two-dimensional multi-slice... The two-dimensional Cartesian turbo spin-echo (TSE) sequence is widely used in routine clinical studies, but it is sensitive to respiratory motion. We investigated the k-space orders in Cartesian TSE that can effectively reduce motion artifacts. The purpose of this study was to demonstrate the relationship between k-space order and degree of motion artifacts using a moving phantom. We compared the degree of motion artifacts between linear and asymmetric k-space orders. The actual spacing of ghost artifacts in the asymmetric order was doubled compared with that in the linear order in the free-breathing situation. The asymmetric order clearly showed less sensitivity to incomplete breath-hold at the latter half of the imaging period. Because of the actual number of partitions of the k-space and the temporal filling order, the asymmetric k-space order of Cartesian TSE was superior to the linear k-space order for reduction of ghosting motion artifacts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Radiological Physics and Technology Springer Journals

Reduction of respiratory ghosting motion artifacts in conventional two-dimensional multi-slice Cartesian turbo spin-echo: which k-space filling order is the best?

Download PDF
7 pages

Loading next page...
 
/lp/springer_journal/reduction-of-respiratory-ghosting-motion-artifacts-in-conventional-two-cNyo00qCvt
Publisher
Springer Journals
Copyright
Copyright © 2018 by Japanese Society of Radiological Technology and Japan Society of Medical Physics
Subject
Medicine & Public Health; Imaging / Radiology; Nuclear Medicine; Radiotherapy; Medical and Radiation Physics
ISSN
1865-0333
eISSN
1865-0341
DOI
10.1007/s12194-018-0448-3
pmid
29516352
Publisher site
See Article on Publisher Site

Abstract

The two-dimensional Cartesian turbo spin-echo (TSE) sequence is widely used in routine clinical studies, but it is sensitive to respiratory motion. We investigated the k-space orders in Cartesian TSE that can effectively reduce motion artifacts. The purpose of this study was to demonstrate the relationship between k-space order and degree of motion artifacts using a moving phantom. We compared the degree of motion artifacts between linear and asymmetric k-space orders. The actual spacing of ghost artifacts in the asymmetric order was doubled compared with that in the linear order in the free-breathing situation. The asymmetric order clearly showed less sensitivity to incomplete breath-hold at the latter half of the imaging period. Because of the actual number of partitions of the k-space and the temporal filling order, the asymmetric k-space order of Cartesian TSE was superior to the linear k-space order for reduction of ghosting motion artifacts.

Journal

Radiological Physics and Technology – Springer Journals

Published: Mar 7, 2018

References

  • Fast spin-echo MR Imaging of the abdomen: contrast optimization and artifact reduction
    Low, RN; Hinks, RS; Alzate, GD
  • Motion artifact in T2-weighted fast spin-echo images of the liver: effect on image contrast and reduction of artifact using respiratory triggering in normal volunteers
    Choe, KA; Smith, RC; Wilkens, K
  • PROPELLER MRI: clinical testing of a novel technique for quantification and compenation of head motion
    Fobes, KP; Pipe, JG; Bird, CR; Heiserman, JE
  • Motion correction with PROPELLER MRI: application to head motion and free-breathing cardiac imaging
    Pipe, JG
  • Evaluation of motion correction effect and image quality with the periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) (BLADE) and parallel imaging acquisition technique in the upper abdomen
    Hirokawa, Y; Isoda, H; Maetani, Y; Arizono, S; Shimada, K; Togashi, K
  • Motion artifact reduction with three-point ghost phase cancellation
    Xiang, QS; Henkelman, RM
  • Ghost phase cancellation with phase-encoding gradient modulation
    Hinks, RS; Xiang, QS; Henkelman, RM
  • Hybrid ordered phase encoding (HOPE): an improved approach for respiratory artifact reduction
    Jhooti, P; Wiesmann, F; Taylor, AM
  • Motion-adapted gating based on k-Space weighting for reduction of respiratory-motion artifacts
    Weiger, M; Bornert, P; Proksa, R
  • TSE with average-specific phase encoding ordering for motion detection and artifact suppression
    Zhang, L; Kholmovski, EG; Guo, J
  • Comparing the FAISE method with conventional dual-echo sequences
    Melki, PS; Mulkem, RV; Panych, LP
  • Fast spin-echo studies of contrast and small-lesion definition in a liver-metastasis phantom
    Chien, D; Mulkern, RV
  • The loss of small objects in variable TE imaging: implications for FSE, RARE, and EPI
    Constable, RT; Gore, JC
  • MR image artifacts from periodic motion
    Wood, ML; Henkelman, RM
  • Motion artifacts in fast spin-echo imaging
    Madore, B; Henkelman, RM
  • Ganong’s review of medical physiology
    Barrett, KE; Barman, SM; Boitano, S; Brooks, H