Library-driven approach for fast implementation of the voxel spread function to correct magnetic field inhomogeneity artifacts for gradient-echo sequences
文献类型：期刊论文
| 作者 | Liu, Ying3 ; Ye, Qiong4; Zeng, Feiyan3; Jiang, Xiaohua1; Cai, Bin2; Lv, Weifu3; Wen, Jie3
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| 刊名 | MEDICAL PHYSICS
 |
| 出版日期 | 2021-05-16 |
| ISSN号 | 0094-2405 |
| 关键词 | fast calculation gradient echo library R2* voxel spread function |
| DOI | 10.1002/mp.14904 |
| 通讯作者 | Wen, Jie(jiewen@ustc.edu.cn) |
| 英文摘要 | Purpose: Previously developed Voxel Spread Function (VSF) method (Yablonskiy, et al, MRM, 2013;70:1283) provides solution to correct artifacts induced by macroscopic magnetic field inhomogeneity in the images obtained by multi-Gradient-Recalled-Echo (mGRE) techniques. The goal of this study was to develop a library-driven approach for fast VSF implementation. Methods: The VSF approach describes the contribution of the magnetic field inhomogeneity effects on the mGRE signal decay in terms of the F-function calculated from mGRE phase and magnitude images. A pre-calculated library accounting for a variety of background field gradients caused by magnetic field inhomogeneity was used herein to speed up the calculation of F-function. Quantitative R2* maps from the mGRE data collected from two healthy volunteers were generated using the library as validation. Results: As compared with direct calculation of the F-function based on a voxel-wise approach, the new library-driven method substantially reduces computational time from several hours to few minutes, while, at the same time, providing similar accuracy of R2* mapping. Conclusion: The new procedure proposed in this study provides a fast post-processing algorithm that can be incorporated in the quantitative analysis of mGRE data to account for background field inhomogeneity artifacts, thus can facilitate the applications of mGRE-based quantitative techniques in clinical practices. (C) 2021 American Association of Physicists in Medicine |
| WOS关键词 | T-2-ASTERISK DECAY ; REDUCTION ; MRI ; R-2(ASTERISK) ; T2-ASTERISK ; PERFORMANCE ; IMAGES |
| 资助项目 | Fundamental Research Funds for the Central Universities[WK9110000119] ; National Natural Science Foundation of China[22077116] ; Collaborative Innovation Program of Hefei Science Center, CAS[2020HSC-CIP010] |
| WOS研究方向 | Radiology, Nuclear Medicine & Medical Imaging |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000651012300001 |
| 资助机构 | Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; Collaborative Innovation Program of Hefei Science Center, CAS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/122382]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wen, Jie |
| 作者单位 | 1.Univ Sci & Technol China, Affiliated Hosp USTC 1, Div Life Sci & Med, Anhui Prov Hosp, Hefei, Anhui, Peoples R China 2.Washington Univ, Dept Radiat Oncol, St Louis, MO 63110 USA 3.Univ Sci & Technol China, Affiliated Hosp USTC 1, Div Life Sci & Med, Anhui Prov Hosp,Dept Radiol, Hefei, Anhui, Peoples R China 4.Chinese Acad Sci, Hefei Inst Phys Sci, High Field Magnet Lab, Hefei, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Ying,Ye, Qiong,Zeng, Feiyan,et al. Library-driven approach for fast implementation of the voxel spread function to correct magnetic field inhomogeneity artifacts for gradient-echo sequences[J]. MEDICAL PHYSICS,2021. |
| APA | Liu, Ying.,Ye, Qiong.,Zeng, Feiyan.,Jiang, Xiaohua.,Cai, Bin.,...&Wen, Jie.(2021).Library-driven approach for fast implementation of the voxel spread function to correct magnetic field inhomogeneity artifacts for gradient-echo sequences.MEDICAL PHYSICS. |
| MLA | Liu, Ying,et al."Library-driven approach for fast implementation of the voxel spread function to correct magnetic field inhomogeneity artifacts for gradient-echo sequences".MEDICAL PHYSICS (2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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