Aims and objectives
In the present study,
we demonstrate a simple technique of MR elastography (MRE)which enable MRE and a two-point Dixon imaging simultaneously based on a conventional gradient-echo MR sequence. It is well known that many pathologies cause changes in tissue elasticity,
and tissue palpation is one of the most fundamental diagnostic tools employed by physicians.
palpation is subjective,
and not all tissues are accessible to the physician's probing,
it is virtually impossible...
Methods and materials
One of the authors has reported that a conventional gradientecho-type multiecho sequence can be used for simple-MRE sequence as a substitute for the dedicated MRE sequence.
You can the simple-MRE on all conventional MR imager as long as you have access to a gradientecho-type multiecho sequence (Fig.
The multiple symmetrical gradientechoes in the simple-MRE are acquired by symmetrical bipolar readout gradient lobes.
This readout gradient lobes have a function similar to motion encoding...
Figure 4-7 shows the in-phase image (a),
opposed-phase image (b),
water image (c),
fat image (d),
wave image (e) and elastogram (f) obtained using the simple-MREmethod,
These images demonstrated that separation of the fat and water components,
as well as the clear wave propagation in the wave image.
two-point Dixon based water/fat imaging is influenced by inhomogeneity of image signal intensity.
The Hip(Fig.6c) and Femoral(Fig.7c) water image were unsatisfactory fat...
We have developed a new method for simultaneous acquisition of MRE and two-point Dixon imaging on a conventional MR imager.
Because the simple-MRE method is unnecessary MEG,
the 1st TE is able to select shortest in-/opposed-phase TE.
the simple MRE method has the opportunity to increase SNR of fat/water images.
Ph.D Associate Professor Dept.
of Radiological Sciences Graduate School of Human Health Sciences Tokyo Metropolitan University 7-2-10,
Tokyo 116-8551 Japan firstname.lastname@example.org T.NUMANO,
T.HABE Tokyo Metropolitan University K.TAKAMOTO,
H.NISHIJYOU Toyama University K.MIZUHARA Tokyo Denki University M.MISAWA National Institute of Advanced Industrial Science and Technology (AIST)
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