Real-time two-dimensional temperature imaging using ultrasound.
We present a system for real-time 2D imaging of temperature change in tissue media using pulse-echo ultrasound. The frontend of the system is a SonixRP ultrasound scanner with a research interface giving us the capability of controlling the beam sequence and accessing radio frequency (RF) data in real-time. The beamformed RF data is streamlined to the backend of the system, where the data is processed using a two-dimensional temperature estimation algorithm running in the graphics processing unit (GPU). The estimated temperature is displayed in real-time providing feedback that can be used for real-time control of the heating source. Currently we have verified our system with elastography tissue mimicking phantom and in vitro porcine heart tissue, excellent repeatability and sensitivity were demonstrated.
Liu
Dalong
D
Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA. liuxx293@umn.edu
Ebbini
Emad S
ES
D000465:Algorithms; D001831:Body Temperature; D003952:Diagnostic Imaging / Q000379:methods; D004452:Echocardiography / Q000379:methods*; D054459:Elasticity Imaging Techniques / Q000379:methods; D001330:Electronic Data Processing; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D019047:Phantoms, Imaging; D013514:Surgical Procedures, Operative; D013696:Temperature; D013816:Thermodynamics