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A fast spin echo two-point Dixon technique and its combination with sensitivity encoding for efficient T2-weighted imaging.

Abstract：

:A fast spin echo two-point Dixon (fast 2PD) technique was developed for efficient T2-weighted imaging with uniform water and fat separation. The technique acquires two interleaved fast spin echo images with water and fat in-phase and 180 degrees out-of-phase, respectively, and generates automatically separate water and fat images for each slice. The image reconstruction algorithm uses an improved and robust region-growing scheme for phase correction and achieves consistency in water and fat identification between different slices by exploiting the intrinsic correlation between the complex images from two neighboring slices. To further lower the acquisition time to that of a regular fast spin echo acquisition with a single signal average, we combined the fast 2PD technique with sensitivity encoding (SENSE). Phantom experiments show that the fast 2PD and SENSE are complementary in scan efficiency and signal-to-noise ratio (SNR). In vivo data from scanning of clinical patients demonstrate that T2-weighted imaging with uniform and consistent fat separation, including breath-hold abdominal examinations, can be readily performed with the fast 2PD technique or its combination with SENSE.

journal_name

Magn Reson Imaging

journal_title

Magnetic resonance imaging

authors

Ma J,Son JB,Bankson JA,Stafford RJ,Choi H,Ragan D

doi

10.1016/j.mri.2005.10.005

subject

Has Abstract

pub_date

2005-12-01 00:00:00

pages

977-82

issue

10

eissn

0730-725X

issn

1873-5894

pii

S0730-725X(05)00306-1

journal_volume

23

pub_type

杂志文章

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