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MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE SPECTROSCOPIC IMAGE COMPUTING METHOD

机译:磁共振成像装置和磁共振光谱图像计算方法

摘要

An object of the invention is to obtain a magnetic resonance spectroscopic image to which the MAC summation is applied with high accuracy and in short time, even though a phase characteristic distribution of the MAC has a spatial non-uniformity, in the MRSI measurement using a magnetic resonance imaging apparatus provided with a MAC.;Using a non-water-suppressed image signal with high SNR, obtained in the non-water-suppressed measurement (a reference measurement) without water suppression, a correction value for correcting the phase distortion for the MAC summation is calculated on each pixel in each coil.;After correcting a phase on each pixel in each coil of a main-scan image signal measured under suppressing water (water-suppressed image signal) using the corrective value, signal adding operation (summation) is performed.;Then, a phase correction in a spectrum-axis is to be performed on the summed spectrum signal.
机译:发明内容本发明的目的是,在使用a的MRSI测量中,即使MAC的相位特性分布具有空间上的不均匀性,也能够在短时间内高精度且短时间地进行MAC求和的磁共振波谱图像。配备有MAC的磁共振成像设备;使用在无水抑制的非水抑制测量(参考测量)中获得的,具有高SNR的非水抑制图像信号,用于校正相位失真的校正值在每个线圈中的每个像素上计算MAC总和。;使用校正值校正在抑制水(水压图像信号)的情况下测量的主扫描图像信号的每个线圈上的每个像素的相位后,信号加法运算(然后,对求和后的频谱信号进行频谱轴的相位校正。

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