Key result
MRI temperature mapping confirmed that after radiofrequency ablation in a phantom model, the temperature decreased from the initial value to 0 °C over one hour.
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MRI temperature mapping can noninvasively monitor temperature changes in tissues surrounding the RFA site.
This study examined the change in the heat generated during radiofrequency ablation (RFA) using a self-manufactured phantom and used magnetic resonance imaging (MRI) to analyze the change in the temperature of the core body and the tissues surrounding the phantom. In this experiment, the image and the phase image were obtained simultaneously from a gradient echo-based sequence using 1.5-Tesla MRI equipment and a 12-channel head coil. The temperature mapping technique was used to calculate the change in temperature. The regions of interest (ROIs) (ROI 1 - ROI 6) were set with a focus on the area where the RFA was performed, according to the temperature distribution, before monitoring the temperature change for one hour in time intervals of five minutes. The results showed that the temperature change in the ROI with time was largest in the ROI 1 and smallest in the ROI 5. In addition, after the RFA procedure, the temperature decreased from the initial value to 0 °C in one hour. The temperature changes in the core body and the surrounding tissues were confirmed by MRI temperature mapping, which is a noninvasive method.
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Kim et al. (2013) studied this question. Radiofrequency ablation (RFA) and MR temperature mapping was evaluated on Temperature change in regions of interest (ROIs) over one hour. MRI temperature mapping confirmed that after radiofrequency ablation in a phantom model, the temperature decreased from the initial value to 0 °C over one hour.
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