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The reconstruction images often suffer from artifacts caused by misaligned geometry of flat detector in micro-CT. This paper mainly simulates the causality between the reconstruction image quality and the flat detector geometry by the eight-spheres phantom. The simulation results show that the most influential parameter is β (the rotation angle of the detector plane along the center point O) among...
In this paper, considering the characteristics of low SNR on low-field MR systems, we presented an optimized and more effective curve fitting method for quantitative T2 mapping. Series of T2-weighted images were acquired using a multi-echo spin echo sequence on a Siemens 0.35T open MR system. Adaptive curve fitting algorithm was performed based on T2-to-noise-ratio (T2NR) optimization, which was achieved...
The development of more flexible and accurate medical image processing technique and platform is important requirement for clinical diagnosis and treatment. A new interactive image processing method is proposed in this work. Using this method, image smoothing, sharpening, histogram processing, pseudo-color processing, segmentation, reading, local amplification and measurement for medical image in...
We have recently developed a novel contrast-based ultrasonic particle imaging technique (Echo PIV) for multi-dimensional blood flow imaging. In the technique, the quality of vectors is important for quantitative blood flow imaging. Here we introduce an algorithm for vectors correction by filtering in frequency domain and applying continuity equation. The algorithm was tested in the Echo PIV imaging...
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