Signal characteristics of MR T2WI in prediction of HIFU treatment outcome for adenomyosis
10.13929/j.1672-8475.201709010
- VernacularTitle:MR T2WI信号特征预测HIFU消融治疗子宫腺肌病疗效
- Author:
Chang LIU
1
;
Jinyun CHEN
;
Wenzhi CHEN
;
Zhibo XIAO
;
Chao YANG
;
Ling WANG
;
Qing WEI
Author Information
1. 重庆医科大学生物医学工程学院省部共建国家重点实验室培育基地—重庆市超声医学工程重点实验室重庆市生物医学工程学重点实验室重庆市微无创医学协同创新中心
- Keywords:
Adenomyosis;
High-intensity focused ultrasound ablation;
Magnetic resonance imaging;
Signal characteristics
- From:
Chinese Journal of Interventional Imaging and Therapy
2018;15(6):345-350
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of signal characteristics of MR T2WI for predicting HIFU treatment outcome for adenomyosis.Methods According to signal characteristics of MR T2WI before HIFU treatment,502 adenomyosis patients were divided into group Ⅰ (lesions with most hypointense and/or little isointense) and group Ⅱ (lesions with most isointense and/or little hypointense).Then patients in each group were further subdivided into subgroup A (without slightly and extremely hyperintense foci in the lesions),subgroup B (with slightly hyperintense foci in the lesions) or subgroup C (with extremely and/or slightly hyperintense foci in the lesions).The correlation of signal characteristics of MR T2WI for adenomyosis on HIFU ablation results and parameters were analyzed.Results There was no statistical difference of non-perfused volume ratio (NPVR) between group Ⅰ and group Ⅱ (t=-0.504,P=0.612).In both group Ⅰ and group Ⅱ,NPVR of subgroup A was higher than that of subgroup B and subgroup C,respectively (group Ⅰ:LSD-t=2.608,3.677,P=0.009,＜0.001;group Ⅱ:LSD-t=3.255,3.778,P=0.001,＜0.001).There was no statistical difference of NPVR between subgroup B and subgroup C (group Ⅰ:LSD-t=-0.852,P=0.395;group Ⅱ:LSD-t=0.278,P=0.781).There was no statistical difference of sonication time,total ablation energy and energyefficiency factor (EEF) between group Ⅰ and group Ⅱ,respectively (sonication time:t=-1.716,P=0.087;total ablation energy:t=-1.676,P=0.094;EEF:Z=0.044,P=0.965).In both group Ⅰ and group Ⅱ,sonicationtime,total ablation energy and EEF of subgroup A were lower than those of subgroup B and subgroup C (all P＜0.05),while no statistical difference was found between subgroup B and subgroup C (all P＞0.05).Conclusion Signal characteristics of adenomyosis on MR T2WI can be used as predictors of HIFU treatment outcome for adenomyosis.
