A Fast Referenceless MR Thermometry Technique
文献类型：会议论文
| 作者 | Huan Shen; Chao Zou; Mengyue He; Yiu-Cho Chung; Lan Liu; Xin Liu |
| 出版日期 | 2011 |
| 会议名称 | 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011 |
| 会议地点 | Shanghai, China |
| 英文摘要 | Referenceless proton resonance frequency (PRF) shift thermometry is robust to B0 drift and inter-scan tissue displacement in temperature change measurement during minimally invasive thermotherapy procedures such as High Intensity Focused Ultrasound (HIFU). In this method, the baseline phase of the heated region is extrapolated from unheated region by a polynomial model. The procedure would involve the time-consuming phase unwrapping procedure necessary for polynomial modeling. We propose here a novel method for referenceless PRF without the need for phase unwrapping. The method fits the spatial derivative of phase image to the polynomial model to avoid phase unwrapping. The baseline phase of heated region is then numerically integrated from the predicted phase derivative image based on the polynomial model. Our experiment demonstrated that the new method improved computational efficiency by 2 to 4 times with slightly better accuracy to the original referenceless thermometry. The speed improvement would facilitate the application of the technique to multi-slice and 3D near-real-time MR thermometry. |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/3511]  |
| 专题 | 深圳先进技术研究院_医工所 |
| 作者单位 | 2011 |
| 推荐引用方式 GB/T 7714 | Huan Shen,Chao Zou,Mengyue He,et al. A Fast Referenceless MR Thermometry Technique[C]. 见:2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011. Shanghai, China. |
入库方式： OAI收割
来源：深圳先进技术研究院
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