Fast Imaging Sequence for Temperature Monitoring in Moving Objects

Bruno Madore¹, Jing Yuan¹, Chang-Sheng Mei¹, Lawrence P. Panych¹

A novel approach to monitor both motion and temperature in moving organs is presented. The technique is based on an SSFP sequence modified to be tolerant but yet sensitive to resonance frequency variations, such as those created by temperature. A phantom moving over a 2-cm range with a period of about 5 s, typical of the motion expected in the liver during free breathing, was imaged with a temporal resolution of 500 ms to resolve the motion. After registration, temperature curves and images comparable (although visibly degraded) to the static case were obtained.