Abstract：Objective To study the clinical application value of dual-energy CT (DECT) imaging in the diagnosis of gout. Methods 216 cases of clinically suspected gout patients admitted to our hospital from June 2020 to September 2022 were collected, and DECT was performed on the patients, who were divided into the observation group (with gout stones, n=108) and the control group (without gout stones, n=108) according to whether gout stones were present in the DECT results or not. The value of DECT in the detection of gout stones and the relationship between the detection rate of urate crystals and the blood uric acid level were analysed; the value of DECT in the diagnosis of gout and the evaluation of therapeutic efficacy was assessed by analysing the number of urate crystals detected by DECT before and after treatment and the blood uric acid level. Results In 216 patients with a clinical presumptive diagnosis of gout, 104 cases were finally clinically diagnosed with gout, and all were reviewed after treatment. In the observation group, 93 out of 108 cases were reviewed, and there was a significant positive correlation between the patients' blood uric acid level and the detection of urate crystals; the sensitivity of DECT for the diagnosis of gout was 89.42%, the specificity was 86.61%, and the accuracy of assessing efficacy was 100%. Conclusion DECT has very high sensitivity and specificity in the examination of tophi, so has basis of reference for clinical diagnosis of gout and evaluation of curative effect.
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2023, Vol. 20 
