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Computer-based objective measurement of the ocular cyclotorsion using digital fundus photograph was developed. Color digital fundus photographs acquired with the field angle of 60/spl deg/, 1520 /spl times/ 1080 in resolution were analyzed. Optic disc and macula were segmented by the program developed on MATLAB, which executed the serial analysis of the(More)
  • T-C. Chuang, T-Y. Huang, +4 authors Ken Kwong
  • 2002
Introduction Propeller imaging[1,2] with EPI has strong potential in obtaining a distortion-free diffusion tensor images by reducing the EPI echo train length (ETL) through the use of multi-shot acquisitions. Parallel imaging methods such as sensitivity encoding (SENSE) help decreasing the number of phase encoding steps and therefore allows further(More)
Purpose Q-ball imaging [1] has been proven to have ability of resolving intra-voxel fiber crossings. Compared to DSI (Diffusion Spectrum Imaging) [2] it only requires one-half diffusion-weighted images (515-dirs vs 252-dirs), and takes only about 30 minutes to acquire whole brain data. However 30 minutes acquisition time still hinders its clinical(More)
Knee osteoarthritis (OA) is a popular disease characterized by the degradation of cartilage, pain, and inflammation, which may lead to increased disability [1]. Intra-articular injection of hyaluronic acid (HA) has become a common treatment for knee OA [2]. HA is part of the substance of the synovial fluid and cartilage, and is associated with the(More)
Introduction The PROPELLER EPI (periodically rotated overlapping parallel lines with enhanced reconstruction using EPI as signal readout) has been shown useful for diffusion tensor imaging (DTI) applications [1]. Since susceptibility-induced geometrical distortions in EPI could lead to blurring in PROPELLER EPI images, a series of correction schemes need to(More)
Y-C. K. Huang, T-Y. Huang, H-C. Chang, and H-W. Chung Department of Electrical Engineering, National Taiwan University, Taipei City, Taiwan, Department of Radiology, Tri-Service General Hospital, Taipei City, Taiwan, Department of Electrical Engineering, National Taiwan University of Scienece and Technology, Taipei City, Taiwan, Applied Science Laboratory,(More)
Osteoarthritis (OA) is a disease related to the degeneration of cartilage, pathological change of subchondral bone and so force, which may lead to a series of inflammation and pain responses [1]. Previous reports have demonstrated the feasibility of using quantitative MR T2 measurements of articular cartilage or meniscus to monitor and early detect the(More)
INTRODUCTION Dynamic magnetic resonance (MR) inverse imaging (InI) can improve the temporal resolution of blood oxygen level dependent (BOLD) contrasts fMRI to the order of milliseconds [1]. In InI, the spatial resolution and the source localization accuracy both critically rely on the signal-to-noise ratio (SNR) of the measurements [1]. The localization of(More)
T-C. Chao, Y-J. Liu, T-Y. Huang, H-W. Chung, and C-Y. S. Chen Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, Department of Automatic Control Engineering, Feng-Chia University, Taichung, Taiwan, Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Department of(More)