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. 2023 Nov 14;14:189. doi: 10.1186/s13244-023-01537-z

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© The Author(s) 2023

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Fig. 2 — Simple linear regression between temperature and average attenuation in the ablation zone. There is significant correlation between HU and temperature with r = − 0.77 (95% CI, − 0.89 to − 0.57) at p < 0.001. Linear regression yields a slope of − 1.96 HU/°C (95% CI, − 2.66 to − 1.26)