Susceptibility-Based Positive-Contrast MRI for Interventional Devices
文献类型：会议论文
| 作者 | Ying Dong; Guoxi Xie; Jim Xiuquan Ji |
| 出版日期 | 2015 |
| 会议名称 | ISMRM 2015 |
| 会议地点 | CANADA |
| 英文摘要 | MR-compatible interventional devices, such as biopsy needles, markers, stents, and brachytherapy seeds, are often made of titanium, platinum or gold. The susceptibility of the device alters the magnetic field, which introduces fast signal dephasing and decreases the signal-to-noise ratio (SNR). As a consequence, a dark hole and bright dots due to signal shifting appear and cover an area of several times larger than the devices themselves in the MR magnitude images. Methods such as MAVRIC and co-RASOR capture the shifted signal with an off-resonance reception in their pulse sequences to create positive contrast images1,2. Our group has previously proposed a method based on susceptibility mapping to provide the positive contrast for brachytherapy seeds3. In this paper, technical advances of the method are reported on imaging of medium/larger devices such as biopsy needles on 3T systems |
| 收录类别 | 其他 |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/7294]  |
| 专题 | 深圳先进技术研究院_医工所 |
| 作者单位 | 2015 |
| 推荐引用方式 GB/T 7714 | Ying Dong,Guoxi Xie,Jim Xiuquan Ji. Susceptibility-Based Positive-Contrast MRI for Interventional Devices[C]. 见:ISMRM 2015. CANADA. |
入库方式： OAI收割
来源：深圳先进技术研究院
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