Lalit Keshav MESTHA,Sanjay BHARADWAJ,Prathosh A. PRASAD,Tejaskumar D. BENGALI,Himanshu J. MADHU,Suresh KUPPUSWAMY
申请号：
US14837898
公开号：
US20170055920A1
申请日:
2015.08.27
申请国别(地区):
US
年份:
2017
代理人:
摘要：
What is disclosed is a system and method for generating a respiration gating signal from a video of a subject for gating diagnostic imaging and therapeutic delivery applications which require respiration phase and/or respiration amplitude gating. One embodiment involves receiving a video of a subject and generating a plurality of time-series signals from the video image frames. A set of features are extracted from the time-series signals and multi-dimensional feature vectors are formed. The feature vectors are clustered. Time-series signals corresponding in each of the clusters are averaged in a temporal direction to obtain a representative signal for each cluster. One cluster is selected and a respiration gating signal is generated from that cluster's representative signal. Thereafter, the respiration gating signal is used to gate diagnostic imaging and therapeutic delivery applications which requires gating based on a threshold set with respect to either respiration phase or respiration amplitude.
