ParallelTransmit_banner.jpg

パラレル転送の進歩

高性能ハードウェアと既存のアプリケーションの視点が、前臨床 MRI へのパラレル転送技術の道を開きます。

3D 内部体積イメージング

3D Inner Volume Imaging
In a pilot scan (a) the brain is selected as a target for inner volume imaging. This volume is then selectively excited using 3D parallel spatially selective excitation (b). The high accuracy of the selection allows the reduction of the FOV to the excited

頸動脈の拍動流によるアーチファクトの抑制

Suppression of Artifacts from Pulsatile Flow in the Carotids
(a): Motion or pulsatile flow can cause artifacts along the phase encoding direction.

(b): Parallel spatially selective excitation of the brain region only leads to an artifact-free brain image, since the artefact causing structures are not excited (“

任意に成形された標的体積での分光法

Spectroscopy in Arbitrarily Shaped Target Volumes
Localized spectroscopy in the rat head: Comparison of proton NMR spectra from a standard rectangular voxel and an adapted “whole brain” voxel (see ROIs in (a)). It is shown that such adapted voxels can be selected with very good accuracy using parallel sp

TOF 血管造影法用の柔軟性の高いスピン ラベリング

Flexible Spin-Labeling for TOF Angiography
TOF angiography in the rat head: (a) conventional TOF acquisition; (b): TOF with 3D parallel spatially selective saturation (labeling) of spins in one carotid results in suppression of signal from this vessel; (c): difference image yields the labeled caro