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| The value of contrast-enhanced ultrasound with different T2WI signals for evaluating preoperative blood perfusion of women with uterine fibroids |
| Taihe Hospital of Hubei Province (Affiliated Hospital of Hubei Medical College), Shiyan, Hubei Province, 442000 |
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Abstract To explore the value of contrast-enhanced ultrasound (CEUS) with different T2WI signals for evaluating preoperative blood perfusion of women with uterine fibroids. Methods: The clinical data of 122 patients with uterine fibroids treated with high-intensity focused ultrasound (HIFU) were retrospectively analyzed. According to the preoperative magnetic resonance imaging (MRI) T2WI signals, they were divided into high signal group, equal signal group, and low signal group. The preoperative ultrasound contrast parameters, such as time to peak (TTP), peak intensity (PI), mean transit time (MTT), and treatment-related indexes of women were compared among the three groups. These women were also divided into satisfactory ablation group (ablation rate≥70%) and partial ablation group (ablation rate<70%). The correlation between preoperative ultrasound contrast parameters and ablation rate was evaluated. Results: There were 35 women in high signal group, 27 women in equal signal group, and 60 women in low signal group. TTP value and ablation rate of women in high signal group were significant lower than those of women in equal signal group, and in low signal group, but the values of PI and MTT, treatment time, treatment power value, and thermal dose of women in high signal group were significant higher (all P＜0.05). There were no significant differences in the values of TTP, PI, and MTT, treatment time, treatment power value, thermal dose, and ablation rate of women between equal signal group and low signal group (P＞0.05). There were 88 (72.1%) women in satisfactory ablation group and 34 (27.9%) women in partial ablation group. The value of TTP of women in satisfactory ablation group was significant higher than that of women in partial ablation group, while the values of PI and MTT of women in satisfactory ablation group were significant lower (P＜0.05). According to Pearson correlation analysis, it was found that ablation rate of HIFU treatment was significantly positively correlated with TTP value (r=0.352, P＜0.05), but was negatively correlated with the values of PI and MTT (r=-0.311, -0.394, P＜0.05). Conclusion: Contrast-enhanced ultrasonography with different T2WI signals for evaluating preoperative blood perfusion of women with uterine fibroids has a high application value. Ultrasound contrast parameters and HIFU ablation rate have significant correlations, which can be used to guide HIFU treatment.
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