作者
Lei Qin, Ehud J Schmidt, Zion Tsz Ho Tse, Juan Santos, William S Hoge, Clare Tempany‐Afdhal, Kim Butts‐Pauly, Charles L Dumoulin
发表日期
2013/3/1
期刊
Magnetic resonance in medicine
卷号
69
期号
3
页码范围
749-759
出版商
Wiley Subscription Services, Inc., A Wiley Company
简介
Intracavity imaging coils provide higher signal‐to‐noise than surface coils and have the potential to provide higher spatial resolution in shorter acquisition times. However, images from these coils suffer from physiologically induced motion artifacts, as both the anatomy and the coils move during image acquisition. We developed prospective motion‐correction techniques for intracavity imaging using an array of tracking coils. The system had <50 ms latency between tracking and imaging, so that the images from the intracavity coil were acquired in a frame of reference defined by the tracking array rather than by the system's gradient coils. Two‐dimensional gradient‐recalled and three‐dimensional electrocardiogram‐gated inversion‐recovery‐fast‐gradient‐echo sequences were tested with prospective motion correction using ex vivo hearts placed on a moving platform simulating both respiratory and cardiac motion …
引用总数
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学术搜索中的文章
L Qin, EJ Schmidt, ZTH Tse, J Santos, WS Hoge… - Magnetic resonance in medicine, 2013