The compatibility of temporary pacemaker leads with magnetic resonance imaging – an ex vivo tissue study

Fig. 2: Illustration of the shift distance of the water peaks between 23.5 and 39.5 °C (0.095 ppm) adjusted by Cr/PCr at 3.02 ppm as temperature independent reference. Due to the excessive intensity of water the other resonances were presented with a magnification factor of 1500. Fig. 3: Correlation between temperature and chemical shift distance of the H2O signal compared to tCho (a) and Cr/PCr (b) within the heating-cooling cycles illustrated by Fig. 1. Temperatures were measured with a mercury-inglass thermometer. Chemical shift values were estimated by peak fitting using AMARES. The broken red lines indicate the confidence interval (95%).