Kirpal KOHLI,Steven THOMAS,Ash M. PARAMESWARAN,Feng-yu LIU
申请号：
US14783705
公开号：
US20160074674A1
申请日:
2014.02.27
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A gating system uses measurements of electrical impedance of a subject to provide simultaneous gating for respiratory and cardiac motion. The gating is based on the change in bio impedance that occurs across trans-thoracic electrodes during breathing and cardiac motion. These quantities can be measured non-invasively in real time by transmitting a known low-amplitude and low-frequency current and measuring voltage drop across electrodes attached to the thorax. The gating signals may control delivery of radiation by a radiotherapy device or an imaging device.
