HASTE sequence with parallel acquisition and T2 decay compensation: application to carotid artery imaging

Ling Zhang, Eugene G. Kholmovski, Junyu Guo, Seong Eun Kim Choi, Glen R. Morrell, Dennis L. Parker

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

T2-weighted carotid artery images acquired using the turbo spin-echo (TSE) sequence frequently suffer from motion artifacts due to respiration and blood pulsation. The possibility of using HASTE sequence to achieve motion-free carotid images was investigated. The HASTE sequence suffers from severe blurring artifacts due to signal loss in later echoes due to T2 decay. Combining HASTE with parallel acquisition (PHASTE) decreases the number of echoes acquired and thus effectively reduces the blurring artifact caused by T2 relaxation. Further improvement in image sharpness can be achieved by performing T2 decay compensation before reconstructing the PHASTE data. Preliminary results have shown successful suppression of motion artifacts with PHASTE imaging. The image quality was enhanced relative to the original HASTE image, but was still less sharp than a non-motion-corrupted TSE image.

Original languageEnglish (US)
Pages (from-to)13-22
Number of pages10
JournalMagnetic Resonance Imaging
Volume27
Issue number1
DOIs
StatePublished - Jan 2009
Externally publishedYes

Keywords

  • Carotid artery imaging
  • HASTE
  • Motion suppression
  • T2 blurring
  • k-Space inherited parallel acquisition

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

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