目的探讨乳腺癌超声及热层析成像的影像学特征及与其分子分型的相关性。方法回顾性分析2014年1月至2017年6月在四川大学华西医院就诊,相关检查资料完整、且有明确病理结果证实的女性乳腺癌患者404例,根据各免疫标志物的表达将乳腺癌病...目的探讨乳腺癌超声及热层析成像的影像学特征及与其分子分型的相关性。方法回顾性分析2014年1月至2017年6月在四川大学华西医院就诊,相关检查资料完整、且有明确病理结果证实的女性乳腺癌患者404例,根据各免疫标志物的表达将乳腺癌病理分子分型分为Luminal A like型、Luminal B like型、人表皮因子生长受体-2(HER-2)过表达型和Basal like型,分析肿块超声BI-RADS征象、热层析曲线特征与病理分子分型结果的相关性。结果形态规则、边缘清晰、后方回声增强的乳腺癌病灶更多见于Basal like型;HER-2过表达型乳腺癌病灶较其他亚型更容易出现微钙化;Luminal A like型乳腺癌热层析曲线走行多贴近30°,HER-2过表达型及Basal like型乳腺癌热层析曲线走行多见于30°~45°间;肿块纵横比≥1以及出现区域淋巴结转移的征象并不能作为区分各个亚型的诊断指标。结论乳腺癌分子亚型具有一定的超声、热层析成像等相关影像学特征,但仍缺乏足够清晰的辨别特征。展开更多
The study on the condensation and the two-phase flow pattern in the condensation section is important to understand the operating mechanisms in a thermosyphon. In this paper, a new electric capacitance tomography(ECT)...The study on the condensation and the two-phase flow pattern in the condensation section is important to understand the operating mechanisms in a thermosyphon. In this paper, a new electric capacitance tomography(ECT) sensor was designed for the visualization measurement in a liquid by removing the shielding case and sealing with insulating hydrophobic material. It was successfully used to measure the condensation process in a thermosyphon under different operating temperatures. The thermosyphon was made of silica glass, and alcohol was used as a working fluid. The alcohol vapor was cooled to condense through the heat convection with the cooling water. The operating temperature was controlled by a heater with different power outputs. The experimental results show that the alcohol vapor condensed in stripes and unevenly on the wall surface at a low operating temperature. The liquid bridge will be formed periodically at the operating temperature of 90?C, and the time interval between two liquid bridges will be shorter with the increase of the operating temperature. At 117?C or even higher operating temperatures, the complete liquid bridge cannot be formed sometimes due to the difference of the growth rate of the surface wave around the circumference.展开更多
文摘目的探讨乳腺癌超声及热层析成像的影像学特征及与其分子分型的相关性。方法回顾性分析2014年1月至2017年6月在四川大学华西医院就诊,相关检查资料完整、且有明确病理结果证实的女性乳腺癌患者404例,根据各免疫标志物的表达将乳腺癌病理分子分型分为Luminal A like型、Luminal B like型、人表皮因子生长受体-2(HER-2)过表达型和Basal like型,分析肿块超声BI-RADS征象、热层析曲线特征与病理分子分型结果的相关性。结果形态规则、边缘清晰、后方回声增强的乳腺癌病灶更多见于Basal like型;HER-2过表达型乳腺癌病灶较其他亚型更容易出现微钙化;Luminal A like型乳腺癌热层析曲线走行多贴近30°,HER-2过表达型及Basal like型乳腺癌热层析曲线走行多见于30°~45°间;肿块纵横比≥1以及出现区域淋巴结转移的征象并不能作为区分各个亚型的诊断指标。结论乳腺癌分子亚型具有一定的超声、热层析成像等相关影像学特征,但仍缺乏足够清晰的辨别特征。
基金supported by the National Natural Science Foundation of China(No.51206048)the Fundamental Research Funds for the Central Universities(No.13MS11)
文摘The study on the condensation and the two-phase flow pattern in the condensation section is important to understand the operating mechanisms in a thermosyphon. In this paper, a new electric capacitance tomography(ECT) sensor was designed for the visualization measurement in a liquid by removing the shielding case and sealing with insulating hydrophobic material. It was successfully used to measure the condensation process in a thermosyphon under different operating temperatures. The thermosyphon was made of silica glass, and alcohol was used as a working fluid. The alcohol vapor was cooled to condense through the heat convection with the cooling water. The operating temperature was controlled by a heater with different power outputs. The experimental results show that the alcohol vapor condensed in stripes and unevenly on the wall surface at a low operating temperature. The liquid bridge will be formed periodically at the operating temperature of 90?C, and the time interval between two liquid bridges will be shorter with the increase of the operating temperature. At 117?C or even higher operating temperatures, the complete liquid bridge cannot be formed sometimes due to the difference of the growth rate of the surface wave around the circumference.