MAGNETIC RESONANCE IMAGING APPARATUS AND BODY MOTION CORRECTION METHOD

To provide a body motion correction technique capable of providing high image quality improvement effects, even when a body motion signal enters a reference signal region in a body motion correction method based on sensitivity information of a receiving coil.SOLUTION: The body motion correction meth...

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Bibliographic Details
Main Authors SHIRAI TORU, SAOTOME ETSUHISA, NAKAMURA YASUAKI
Format Patent
LanguageEnglish
Japanese
Published 13.12.2018
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:To provide a body motion correction technique capable of providing high image quality improvement effects, even when a body motion signal enters a reference signal region in a body motion correction method based on sensitivity information of a receiving coil.SOLUTION: The body motion correction method includes: before correcting a measured whole k-space region, repeating body motion correction processing to only a reference signal region, while updating the reference signal region or a convolutional range; and correcting the reference signal region. Later, a weighting coefficient is calculated using the corrected reference signal region to correct the whole k-space region.SELECTED DRAWING: Figure 6 【課題】受信コイルの感度情報に基づく体動補正法において、参照信号領域に体動信号が混入しても、高い画質改善効果が得られる体動補正技術を提供する。【解決手段】計測したｋ空間全領域を補正する前に、参照信号領域または畳み込み積分範囲を更新しながら参照信号領域のみに対して体動補正処理を反復し、参照信号領域を補正する。その後、補正された参照信号領域を利用して重み係数を算出し、ｋ空間全領域を補正する。【選択図】図６
Bibliography:Application Number: JP20170103204