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    • 16. 发明授权
    • Magnetic resonance imaging apparatus and magnetic resonance spectroscopic image computing method
    • 磁共振成像装置和磁共振光谱图像计算方法
    • US08258785B2
    • 2012-09-04
    • US12523259
    • 2007-12-17
    • Satoshi HirataYoshitaka BitoKiyoharu Tanaka
    • Satoshi HirataYoshitaka BitoKiyoharu Tanaka
    • G01V3/00
    • A61B5/055A61B5/7257
    • 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.
    • 本发明的目的在于,即使在MAC的相位特性分布具有空间不均匀性的情况下,也能够在短时间内以高精度和短时间获得应用了MAC求和的磁共振分光图像, 具有MAC的磁共振成像装置。 使用在没有水分抑制的非水抑制测量(参考测量)中获得的具有高SNR的非水分抑制图像信号,针对每个像素计算用于校正MAC求和的相位失真的校正值 线圈 在使用校正值校正在用抑制水(水分抑制图像信号)测量的主扫描图像信号的每个线圈中的每个像素上的相位之后,执行信号相加操作(求和)。 然后,对相加的频谱信号进行频谱轴的相位校正。
    • 17. 发明申请
    • MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE SPECTROSCOPIC IMAGE COMPUTING METHOD
    • 磁共振成像装置和磁共振光谱图像计算方法
    • US20100013481A1
    • 2010-01-21
    • US12523259
    • 2007-12-17
    • Satoshi HirataYoshitaka BitoKiyoharu Tanaka
    • Satoshi HirataYoshitaka BitoKiyoharu Tanaka
    • G01R33/48G01R33/44
    • A61B5/055A61B5/7257
    • 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.
    • 本发明的目的在于,即使在MAC的相位特性分布具有空间不均匀性的情况下,也能够在短时间内以高精度和短时间获得应用了MAC求和的磁共振分光图像, 具有MAC的磁共振成像装置。 使用在没有水分抑制的非水抑制测量(参考测量)中获得的具有高SNR的非水分抑制图像信号,针对每个像素计算用于校正MAC求和的相位失真的校正值 线圈 在使用校正值校正在用抑制水(水分抑制图像信号)测量的主扫描图像信号的每个线圈中的每个像素上的相位之后,执行信号相加操作(求和)。 然后,对相加的频谱信号进行频谱轴的相位校正。
    • 19. 发明授权
    • Recording apparatus and method for correction of discharge failure and
density unevenness
    • 用于校正放电故障和密度不均匀的记录装置和方法
    • US5798773A
    • 1998-08-25
    • US877310
    • 1997-06-17
    • Akira HiramatsuKiyoharu TanakaYasuyuki Takanaka
    • Akira HiramatsuKiyoharu TanakaYasuyuki Takanaka
    • B41J2/01B41J2/12B41J2/165B41J2/18B41J2/185B41J3/44B41J29/393B41J29/46B41J2/05
    • B41J2/2139B41J2/16579B41J2/2146B41J29/393B41J3/44B41J2/16552
    • A recording apparatus records an image by scanning a first recording head relative to a recording medium of a particular type. The apparatus includes the first recording head, a pattern recording controller, a reader, a restoring device, a second recording head, a discriminator and a control unit. The pattern recording controller controls recording of a predetermined pattern with the first recording head at a predetermined timing either on the recording medium or on a pattern recording medium different from the recording medium. The reader reads the predetermined pattern and the restoring device performs a discharge restoring operation of the recording head. The discriminator discriminates a recording state of the first recording head, based on the predetermined pattern read by the reader. The control unit enables the second recording head to record the image to be recorded by the first recording head, in a case that after the discriminator discriminates the recording state as being poor and thereafter the discharge restoring operation performed by the restoring device and a pattern recording operation by the pattern recording controller have been executed a predetermined number of times, the discriminator has discriminated the recording state as being still poor.
    • 记录装置通过相对于特定类型的记录介质扫描第一记录头来记录图像。 该装置包括第一记录头,图案记录控制器,读取器,恢复装置,第二记录头,鉴别器和控制单元。 图案记录控制器在记录介质上或在与记录介质不同的图案记录介质上的预定定时,控制用第一记录头预定图案的记录。 读取器读取预定图案,恢复装置执行记录头的放电恢复操作。 鉴别器基于由读取器读取的预定模式来鉴别第一记录头的记录状态。 在鉴别器鉴别出记录状态不佳之后,此后由恢复装置执行的放电恢复操作和模式记录的情况下,控制单元使得第二记录头记录要由第一记录头记录的图像 已经执行了模式记录控制器的预定次数的操作,鉴别器鉴别出记录状态仍然很差。