Takahashi K, Okada S, Okada M, Kitao M, Kaji Y, Sugimura K
Department of Obstetrics and Gynecology, Shimane Medical University, Izumo, Japan.
Hum Reprod. 1996 Apr;11(4):857-60. doi: 10.1093/oxfordjournals.humrep.a019266.
To determine whether the cyst fluid characteristics of endometrioma can be evaluated by magnetic resonance imaging (MRI), 36 endometriomas obtained from 24 patients (age range 21-43 years; mean 34 years) were studied. MRI was performed < 2 weeks before laparoscopy or laparotomy. Comparative studies of the density and concentration of iron in the endometrioma and the signal intensity (SI) of MRI [calculated relaxation time T1 value, calculated relaxation time T2 value, signal intensity on a T1-weighted image (T1SI) and on a T2-weighted image (T2SI) of the cyst; T1SI/signal intensity of the gluteus maximus muscle (MSI), and T2SI/MSI of the cyst] were performed. The density of the cyst fluid and its iron concentration were found to be directly proportional. There was a significant relationship between the concentration of iron and the T2SI, T2SI/MI and calculated T2 values. In particular, the concentration of iron and the ration of T2SI/ MSI were inversely proportional. Therefore, T2SI/MSI reflected the concentration of iron in endometriomas without recourse to measurement of the calculated T2 value, which suggests that the MRI and T2 signal intensity may be useful for evaluating the cyst fluid characteristics of endometriomas.
为了确定子宫内膜异位囊肿的囊液特征是否可以通过磁共振成像（MRI）进行评估，对24例患者（年龄范围21 - 43岁；平均34岁）的36个子宫内膜异位囊肿进行了研究。MRI在腹腔镜检查或剖腹手术前不到2周进行。对子宫内膜异位囊肿中铁的密度和浓度与MRI信号强度（SI）[计算的弛豫时间T1值、计算的弛豫时间T2值、囊肿在T1加权图像（T1SI）和T2加权图像（T2SI）上的信号强度；T1SI/臀大肌信号强度（MSI）以及囊肿的T2SI/MSI]进行了对比研究。发现囊液密度与其铁浓度成正比。铁浓度与T2SI、T2SI/MI和计算的T2值之间存在显著关系。特别是，铁浓度与T2SI/MSI的比值成反比。因此，T2SI/MSI反映了子宫内膜异位囊肿中铁的浓度，而无需测量计算的T2值，这表明MRI和T2信号强度可能有助于评估子宫内膜异位囊肿的囊液特征。
