Ultrashort TE chemical shift imaging (UTE-CSI)
نویسندگان
چکیده
منابع مشابه
Ultrashort TE Imaging with Rescaled Digital Subtraction (UTE RDS)
INTRODUCTION Imaging of short T2 tissues often requires not only a short TE so that signal from very short T2 species can be detected, but efficient suppression of the signal from surrounding long T2 species which may have much higher MR signals (1-4). There are three major long T2 suppression techniques: 1) A long 90° pulse followed by gradient spoiling to selectively saturate long T2 species ...
متن کاملNatural linewidth chemical shift imaging (NL-CSI).
The discrete Fourier transform (FT) is a conventional method for spatial reconstruction of chemical shifting imaging (CSI) data. Due to point spread function (PSF) effects, FT reconstruction leads to intervoxel signal leakage (Gibbs ringing). Spectral localization by imaging (SLIM) reconstruction was previously proposed to overcome this intervoxel signal contamination. However, the existence of...
متن کاملMultiecho Ultrashort TE (UTE) Imaging and T2* Mapping of Knee Cartilage
INTRODUCTION Magnetic resonance imaging has been used widely for the detection of cartilage lesions (1, 2). In addition to quantifying changes in cartilage morphology, such as thickness and volume, extensive studies have been performed on T1 and T2 quantification which reflect changes in biochemical composition of cartilage with early osteoarthritis (OA) (3-5). Short TE projection reconstructio...
متن کاملSpectroscopic Imaging of the Knee Using an Interleaved Ultrashort TE (UTE) Sequence
INTRODUCTION The human knee contains several tissues with short T2 relaxation times, such as menisci, tendon, and the deep radial and calcified layers of cartilage (1, 2). Ultrashort TE (UTE) sequences have been used to image these tissues with high signal and contrast (2). It would be very useful to get information about the spectral composition of these short T2 tissues. UTE-CSI based on a va...
متن کاملMagnetic resonance imaging with ultrashort TE (UTE) PULSE sequences: technical considerations.
It is now possible to detect signals from tissues and tissue components with short T(2)s, such as cortical bone, using ultrashort TE (UTE) pulse sequences. The background to the use of these sequences is reviewed with particular emphasis on MR system issues. Tissue properties are discussed, and tissues are divided into those with a majority and those with a minority of short T(2) components. UT...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2005
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.20344