[Slice profile measurement using a crossed thin-ramps method in three-dimensional magnetic resonance imaging].

Rei Yoshida, Yoshio Machida, Takahide Ogura, Hajime Tamura, Takeo Hikichi, Issei Mori

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Recent progress in variable-flip-angle fast spin-echo technology has further extended the utility of three-dimensional (3D) magnetic resonance imaging (MRI) for clinical application. The slice profile in 3D MRI is the point spread function that has a sync form in principle, whereas a slice profile in 2D imaging provides information on characteristics of selective radio frequency excitation. We investigated the optimal condition to measure 3D slice profiles using a crossed thin-ramps phantom. We found that the profile data should cover a large area in order to evaluate both the main lobe and side lobes in the slice profile, and that the appropriate slice thickness was 2 mm. We also found that artifacts in the direction perpendicular to the slice create an offset error in the measured slice profile when 3D imaging. In this paper, we describe the optimal condition and some remarks on the slice profile evaluation for 3D MRI.

Original languageEnglish
Pages (from-to)1456-1466
Number of pages11
JournalNihon Hoshasen Gijutsu Gakkai zasshi
Volume68
Issue number11
DOIs
Publication statusPublished - 2012

ASJC Scopus subject areas

  • Medicine(all)

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