Myocardial T2 mapping with respiratory navigator and automatic nonrigid motion correction
文献类型：期刊论文
| 作者 | Shivraman Giri; Saurabh Shah; Hui Xue; Yiu-Cho Chung; Michael L. Pennell; Jens Guehring; Sven Zuehlsdorff; Subha V. Raman; Orlando P. Simonetti |
| 刊名 | MAGNETIC RESONANCE IN MEDICINE
 |
| 出版日期 | 2012 |
| 英文摘要 | Abstract Quantitative T 2 mapping was recently shown to be superior to T 2 -weighted imaging in detecting T 2 changes across myocardium. Pixel-wise T 2 mapping is sensitive to misregistration between the images used to generate the parameter map. In this study, utility of two motion-compensation strategies—(i) navigator gating with prospective slice correction and (ii) nonrigid registration—was investigated for myocardial T 2 mapping in short axis and horizontal long axis views. Navigator gating provides respiratory motion compensation, whereas registration corrects for residual cardiac and respiratory motion between images; thus, the two strategies provided complementary functions. When these were combined, respiratory-motion-induced T 2 variability, as measured by both standard deviation and interquartile range, was comparable to that in breath-hold T 2 maps. In normal subjects, this combined motion-compensation strategy increased the percentage of myocardium with T 2 measured to be within normal range from 60.1% to 92.2% in short axis and 62.3% to 92.7% in horizontal long axis. The new motion-compensated T 2 mapping technique, which combines navigator gating, prospective slice correction, and nonrigid registration to provide through-plane and in-plane motion correction, enables a method for fully automatic and robust free-breathing T 2 mapping. Magn Reson Med, 2012. 08 2012 Wiley Periodicals, Inc. |
| 收录类别 | SCI |
| 原文出处 | http://onlinelibrary.wiley.com/doi/10.1002/mrm.24139/epdf |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/4308]  |
| 专题 | 深圳先进技术研究院_其他 |
| 作者单位 | MAGNETIC RESONANCE IN MEDICINE |
| 推荐引用方式 GB/T 7714 | Shivraman Giri,Saurabh Shah,Hui Xue,et al. Myocardial T2 mapping with respiratory navigator and automatic nonrigid motion correction[J]. MAGNETIC RESONANCE IN MEDICINE,2012. |
| APA | Shivraman Giri.,Saurabh Shah.,Hui Xue.,Yiu-Cho Chung.,Michael L. Pennell.,...&Orlando P. Simonetti.(2012).Myocardial T2 mapping with respiratory navigator and automatic nonrigid motion correction.MAGNETIC RESONANCE IN MEDICINE. |
| MLA | Shivraman Giri,et al."Myocardial T2 mapping with respiratory navigator and automatic nonrigid motion correction".MAGNETIC RESONANCE IN MEDICINE (2012). |
入库方式： OAI收割
来源：深圳先进技术研究院
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