Teixeira, C. A.Ruano, M. GraçaPereira, W. C. A.Garreton, L. G.2015-04-132015-04-132010-01-011875-3892AUT: MRU00118;http://hdl.handle.net/10400.1/5863This work reports the assessment of time-shifts (TS) from backscattered ultrasound (BSU) signals when large temperature variations (up to 15 degrees C) were induced in a gel-based phantom. The results showed that during cooling temperature is linear with TS at a rate of approximately 74 ns/degrees C. However during a complete heating/cooling cycle, the relation is highly non-linear. This can be explained by the fact that during cooling the temperature distribution is more uniform. Another problem to report is that TS is very sensitive to external movements.engNon-invasive temperature estimationTemperature modelsTime-shift estimationUltrasoundconference objecthttp://dx.doi.org/10.1016/j.phpro.2010.01.088