摘要
目的探讨MR增强T2*加权血管成像(ESWAN)序列相位图(phase图)对卵巢子宫内膜异位囊肿的诊断能力。材料与方法回顾性分析行盆腔MRI检查并经手术病理证实的卵巢囊性病变患者68例(80个病灶),扫描序列包括:T1WI、T2WI、LAVA和ESWAN序列。A组:卵巢内膜异位囊肿(42个);B组:卵巢输卵管积脓、积水(14个);C组:其他卵巢囊性病变(24个)。观察病灶phase图中囊壁有无外高内低信号环及有无出血性瘤内磁敏感信号强度(ITSS)。选择卡方或Fisher确切概率法进行三组间比较。应用Logistic回归计算联合诊断效能,使用ROC曲线及Wilcoxon检验比较诊断效能。结果 A组囊壁见外高内低信号环、出血性ITSS者多于B组和C组(P<0.001),B组和C组间无差异(P=0.319、P=0.240)。囊壁见外高内低信号环、出血性ITSS联合使用时,诊断效能最高(AUC为0.960)。结论 ESWAN序列phase图中病灶壁见外高内低信号环及出血性ITSS联合使用时,诊断卵巢子宫内膜异位囊肿的效能最佳。
Objective： To investigate the diagnostic ability of the phase map of enhanced T2＊ weighted angiography（ESWAN） in diagnosis of ovarian endometrial cyst. Materials and Methods： This study was approved by the ethics committee of our hospital. A retrospective analysis was performed on 68 cases（80 lesions） pathologically-proven ovarian cystic lesions with pelvic MRI examination（T1WI, T2 WI, LAVA and ESWAN sequence）. Group A was endometrial cyst（n=42）, Group B was ovary pyosalpinx and hydrosalpinx（n=14）, Group C were other ovarian cystic lesions（n=24）. The morphological characteristics were observed whether there are rings hyperintense outside and hypointense inside and hemorrhagic introtumoral susceptibility signal intensity（ITSS） in the phase image. The above characteristics were compared by Chi-square test or the Fisher exact probabilities. The Logistic regression was used to analyze the combination diagnostic efficacy. The diagnostic efficacy was compared by ROC curve and Wilcoxon test. Results： The lesions with the ring that hyperintense outside and hypointense inside or with hemorrhagic ITSS along the wall in phase image of group A were more than that in group B and C（P〈0.001）, and there was no difference between group B and C（P value were 0.319 and 0.240）. Then the best combination were lesion with the ring that hyperintense outside and hypointense and hemorrhagic ITSS inside wall in the phase image（AUC was 0.960）. Conclusios： The Combination of observing the ring hyperintense outside and hypointense inside and hemorrhagic ITSS in phase image was best in diagnosing ovarian endometrial cysts.
出处
《磁共振成像》
CAS
CSCD
2016年第7期501-505,共5页
Chinese Journal of Magnetic Resonance Imaging
