Kyoto University · 의학
이 교수의 연구실은 뇌혈관 및 신경영상 영상 기술의 정밀도 향상을 목표로 하며, 특히 3D 톰그래피, 강자성 공명 영상(MRI), 그리고 압력-감도 영상 기법을 활용한 뇌의 미세혈관 및 신경조직의 고해상도 분석에 집중하고 있습니다. 고해상도 영상 기법의 최적화, 특히 압축 감지 기반 영상 복원(Compressed Sensing)과 QSM(양자 스ус셉티빌리티 영상)을 통한 철분 축적 및 대조제 영향 평가 등 뇌영상의 정량적 분석 기법 개발에 주력하고 있습니다. 또한 3.0T와 1.5T MRI의 영상 품질 비교를 통한 기술적 최적화 및 임상 적용 가능성을 탐색하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The Liliequist membrane can be visualized by using 3D CISS MR sequences.
Moyamoya vessels are better depicted with MR angiography at 3.0 T than at 1.5 T.
Optimization of NESTA in the reconstruction of 3-dimensional TOF-MRA was conducted, and the parameters and undersampling mask with the lowest MSE were determined. Caliber measurement should be performed with CS (5.0X) with 25 or 30 iterations. Most cerebral aneurysms were sufficiently recognized using CS-MRA (5.0X) or CS-MRA (8.0X) with 10 iterations.
We performed a comparison study focusing on differences in fractional anisotropy (FA) and mean diffusivity (MD) between 3-T and 1.5-T diffusion tensor imaging (DTI) with parallel imaging. Thirty healthy volunteers underwent DTI with an eight-channel phased-array coil at both 3 T and 1.5 T. Histogram and region of interest (ROI) analyses were performed. Paired t tests were applied for statistical analysis. Signal-to-noise ratios of these regions were also measured. For histogram analysis, peak lo
Susceptibility values on QSM in DN of the GBCA group, after serial administration of GBCAs, were significantly higher than those of the non-GBCA group. Evidence Level: 3 J. MAGN. RESON. IMAGING 2017;45:1352-1358.
2 Technical Efficacy: Stage 2 J. MAGN. RESON. IMAGING 2017;46:732-739.
DANTE T1-SPACE successfully visualized neuromelanin of the SNpc and showed potential for evaluating PD. © 2020 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
Compressed sensing (CS) MRI has just been introduced to research areas as an innovative approach to accelerate MRI. CS is expected to achieve higher k-space undersampling by exploiting the underlying sparsity in an appropriate transform domain. MR angiography (MRA) provides high spatial resolution information on arteries; however, a relatively long acquisition time is necessary to cover a wide volume. Reduction of acquisition time by CS for time-of-flight (TOF) MR angiography (Sparse-TOF) is ben
