Abstract
Summary To assess a rapid 3D multishot EPI acquisition as an improved cardiac respiratory navigator. Background 3D EPI navigators are a robust real-time brain navigation tool [1], they allow rapid online reconstruction and image registration (< 80 ms). A thoracic EPI volume can be acquired in 200 ms, thus allowing real-time navigation. An analysis of the EPI navigators’ stability and variance when registering the heart is presented. Methods
Highlights
3D EPI navigators are a robust real-time brain navigation tool [1], they allow rapid online reconstruction and image registration (< 80 ms)
The images were reconstructed in real-time and fed into a modified 3D PACE rigid body registration [2] which registered the region of interest (ROI) to that of the first navigator’s volume
A sample navigator volume and the translations and rotation estimates from one volunteer are shown in the figure
Summary
Summary To assess a rapid 3D multishot EPI acquisition as an improved cardiac respiratory navigator. Background 3D EPI navigators are a robust real-time brain navigation tool [1], they allow rapid online reconstruction and image registration (< 80 ms). A thoracic EPI volume can be acquired in 200 ms, allowing real-time navigation. An analysis of the EPI navigators’ stability and variance when registering the heart is presented
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