Ultrasonic particle image velocimetry for improved flow gradient imaging: Algorithms, methodology and validation
文献类型：期刊论文
| 作者 | Niu, Lili; Qian, Ming; Wan, Kun; Yu, Wentao; Jin, Qiaofeng; Ling, Tao; Gao, Shen; Zheng, Hairong |
| 刊名 | PHYSICS IN MEDICINE AND BIOLOGY
 |
| 出版日期 | 2010 |
| 卷号 | 55期号:7页码:2103-2120 |
| 英文摘要 | This paper presents a new algorithm for ultrasonic particle image velocimetry ( Echo PIV) for improving the flow velocity measurement accuracy and efficiency in regions with high velocity gradients. The conventional Echo PIV algorithm has been modified by incorporating a multiple iterative algorithm, sub-pixel method, filter and interpolation method, and spurious vector elimination algorithm. The new algorithms' performance is assessed by analyzing simulated images with known displacements, and ultrasonic B-mode images of in vitro laminar pipe flow, rotational flow and in vivo rat carotid arterial flow. Results of the simulated images show that the new algorithm produces much smaller bias from the known displacements. For laminar flow, the new algorithm results in 1.1% deviation from the analytically derived value, and 8.8% for the conventional algorithm. The vector quality evaluation for the rotational flow imaging shows that the new algorithm produces better velocity vectors. For in vivo rat carotid arterial flow imaging, the results from the new algorithm deviate 6.6% from the Doppler-measured peak velocities averagely compared to 15% of that from the conventional algorithm. The new Echo PIV algorithm is able to effectively improve the measurement accuracy in imaging flow fields with high velocity gradients. |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/0031-9155/55/7/020/pdf/0031-9155_55_7_020.pdf |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/2935]  |
| 专题 | 深圳先进技术研究院_医工所 |
| 作者单位 | PHYSICS IN MEDICINE AND BIOLOGY |
| 推荐引用方式 GB/T 7714 | Niu, Lili,Qian, Ming,Wan, Kun,et al. Ultrasonic particle image velocimetry for improved flow gradient imaging: Algorithms, methodology and validation[J]. PHYSICS IN MEDICINE AND BIOLOGY,2010,55(7):2103-2120. |
| APA | Niu, Lili.,Qian, Ming.,Wan, Kun.,Yu, Wentao.,Jin, Qiaofeng.,...&Zheng, Hairong.(2010).Ultrasonic particle image velocimetry for improved flow gradient imaging: Algorithms, methodology and validation.PHYSICS IN MEDICINE AND BIOLOGY,55(7),2103-2120. |
| MLA | Niu, Lili,et al."Ultrasonic particle image velocimetry for improved flow gradient imaging: Algorithms, methodology and validation".PHYSICS IN MEDICINE AND BIOLOGY 55.7(2010):2103-2120. |
入库方式： OAI收割
来源：深圳先进技术研究院
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