The purpose of this study was to determine the relationships between the CT value and temperature for the range of
ablation therapy. Bovine liver was slowly heated and image acquisition was performed with a clinical CT. Real time
temperature was measured and stored using calibrated thermal sensors. Images were analyzed at CT workstation. It was
feasible to validate the spatial and temporal temperature growth during heating by means of declining CT values in the
performed images. The thermal sensitivity for liver tissue was -0.54±0.10 HU/oC. It is concluded that CT can be
calibrated to predict temperature distribution during heating.
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