首页>
外国专利>
Method and system for detection of contrast injection in fluoroscopic image sequences
Method and system for detection of contrast injection in fluoroscopic image sequences
展开▼
机译:用于检测透视图像序列中的造影剂的方法和系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method and system for detecting a spatial and temporal location of a contrast injection in a fluoroscopic image sequence is disclosed. Training volumes generated by stacking a sequence of 2D fluoroscopic images in time order are annotated with ground truth contrast injection points. A heart rate is globally estimated for each training volume, and local frequency and phase is estimated in a neighborhood of the ground truth contrast injection point for each training volume. Frequency and phase invariant features are extracted from each training volume based on the heart rate, local frequency and phase, and a detector is trained based on the training volumes and the features extracted for each training volume. The detector can be used to detect the spatial and temporal location of a contrast injection in a fluoroscopic image sequence.
展开▼