评价动态增强磁共振成像在早期乳腺癌诊断中的价值。随机选取2008年10月到2011年6月本院83例经B超或B超联合钼靶检查阴性的中青年女性行乳腺MRI检查,对MRI发现可疑结节病灶的患者进行手术活检,通过病理诊断来评价MRI在诊断早期乳腺癌的...评价动态增强磁共振成像在早期乳腺癌诊断中的价值。随机选取2008年10月到2011年6月本院83例经B超或B超联合钼靶检查阴性的中青年女性行乳腺MRI检查,对MRI发现可疑结节病灶的患者进行手术活检,通过病理诊断来评价MRI在诊断早期乳腺癌的准确性和临床应用价值。83例中青年女性中,发现病变7例(8.4%),癌前改变4例(4.8%),癌3例(3.6%),其中仅行B超检查的58例,MRI发现1例乳腺导管内原位癌(ductal carcinoma in situ,DCIS),1例粘液癌,2例中重度非典型乳腺增生;B超和钼靶检查阴性的25例女性乳腺行MRI检查后,发现1例DCIS和2例重度非典型乳腺增生。3例癌中保乳手术2例,改良根治术1例,4例不典型增生者行腺叶切除术。对B超与钼靶检查或者两者联合检查阴性的中青年女性行乳腺MRI检查,可明显提高早期乳腺癌的检出率,从而有利于提高乳腺癌的保乳率。展开更多
ZnO nano-powders was prepared on the surface of exfoliated kaolinite（with the precursor solution of（ZnAc2·2H2O） and ammonia） via microwave heating hydrolysis method,the nanocrystalline ZnO was（characterized...ZnO nano-powders was prepared on the surface of exfoliated kaolinite（with the precursor solution of（ZnAc2·2H2O） and ammonia） via microwave heating hydrolysis method,the nanocrystalline ZnO was（characterized） by using XRD,FTIR,TEM and their formation mechanism was proposed.The results indicate that the products are composed of hexagonal-phased ZnO.The morphology of ZnO is rod-like without exfoliated kaolinite（length is 100-200 nm,diameter is 50-80 nm） as well as is cluster whisker-like in the presence of exfoliated kaolinite（length is 200-350 nm,diameter is 40-60 nm）.The infrared absorption of the latter was enhanced apparently.The formation mechanism of the nanocrystalline ZnO synthesized by this method was also suggested.展开更多
文摘评价动态增强磁共振成像在早期乳腺癌诊断中的价值。随机选取2008年10月到2011年6月本院83例经B超或B超联合钼靶检查阴性的中青年女性行乳腺MRI检查,对MRI发现可疑结节病灶的患者进行手术活检,通过病理诊断来评价MRI在诊断早期乳腺癌的准确性和临床应用价值。83例中青年女性中,发现病变7例(8.4%),癌前改变4例(4.8%),癌3例(3.6%),其中仅行B超检查的58例,MRI发现1例乳腺导管内原位癌(ductal carcinoma in situ,DCIS),1例粘液癌,2例中重度非典型乳腺增生;B超和钼靶检查阴性的25例女性乳腺行MRI检查后,发现1例DCIS和2例重度非典型乳腺增生。3例癌中保乳手术2例,改良根治术1例,4例不典型增生者行腺叶切除术。对B超与钼靶检查或者两者联合检查阴性的中青年女性行乳腺MRI检查,可明显提高早期乳腺癌的检出率,从而有利于提高乳腺癌的保乳率。
文摘ZnO nano-powders was prepared on the surface of exfoliated kaolinite（with the precursor solution of（ZnAc2·2H2O） and ammonia） via microwave heating hydrolysis method,the nanocrystalline ZnO was（characterized） by using XRD,FTIR,TEM and their formation mechanism was proposed.The results indicate that the products are composed of hexagonal-phased ZnO.The morphology of ZnO is rod-like without exfoliated kaolinite（length is 100-200 nm,diameter is 50-80 nm） as well as is cluster whisker-like in the presence of exfoliated kaolinite（length is 200-350 nm,diameter is 40-60 nm）.The infrared absorption of the latter was enhanced apparently.The formation mechanism of the nanocrystalline ZnO synthesized by this method was also suggested.
