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Radiomics and radiogenomics:extracting more information from medical images for the diagnosis and prognostic prediction of ovarian cancer
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作者 song zeng Xin-Lu Wang Hua Yang 《Military Medical Research》 2025年第9期1369-1386,共18页
Ovarian cancer(OC)remains one of the most lethal gynecological malignancies globally.Despite the implementation of various medical imaging approaches for OC screening,achieving accurate differential diagnosis of ovari... Ovarian cancer(OC)remains one of the most lethal gynecological malignancies globally.Despite the implementation of various medical imaging approaches for OC screening,achieving accurate differential diagnosis of ovarian tumors continues to pose significant challenges due to variability in image performance,resulting in a lack of objectivity that relies heavily on the expertise of medical professionals.This challenge can be addressed through the emergence and advancement of radiomics,which enables high-throughput extraction of valuable information from conventional medical images.Furthermore,radiomics can integrate with genomics,a novel approach termed radiogenomics,which allows for a more comprehensive,precise,and personalized assessment of tumor biological features.In this review,we present an extensive overview of the application of radiomics and radiogenomics in diagnosing and predicting ovarian tumors.The findings indicate that artificial intelligence methods based on imaging can accurately differentiate between benign and malignant ovarian tumors,as well as classify their subtypes.Moreover,these methods are effective in forecasting survival rates,treatment outcomes,metastasis risk,and recurrence for patients with OC.It is anticipated that these advancements will function as decision-support tools for managing OC while contributing to the advancement of precision medicine. 展开更多
关键词 Radiomics Radiogenomics Machine learning Deep learning Ovarian cancer(OC)
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有机工质向心透平气动设计与性能优化研究
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作者 卢绪祥 宋增 +2 位作者 刘瑞 丁海霞 李逸轩 《动力工程学报》 CAS CSCD 北大核心 2024年第8期1181-1188,共8页
为提升有机工质向心透平的效率与性能,对400 kW有机工质向心透平进行了一维气动设计。在一维气动设计结果的基础上进行建模,并结合三维数值模拟预测了有机工质向心透平在设计工况下的性能。以向心透平等熵效率为目标,采用均匀试验法对... 为提升有机工质向心透平的效率与性能,对400 kW有机工质向心透平进行了一维气动设计。在一维气动设计结果的基础上进行建模,并结合三维数值模拟预测了有机工质向心透平在设计工况下的性能。以向心透平等熵效率为目标,采用均匀试验法对动叶轮的子午流道进行优化设计。结果表明:与原始向心透平相比,优化后的向心透平流场压力分布层次更加分明,整体熵增减小,产生的摩擦损失、尾迹损失明显减小,叶片做功能力增大,向心透平内部的流动情况得到了改善,等熵效率由原来的82.33%提高到85.92%,输出功率也增大了18.04 kW。 展开更多
关键词 向心透平 子午流道 性能优化 均匀试验法 数值模拟
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基于响应面-遗传算法的文丘里蒸汽疏水阀结构优化设计
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作者 卢绪祥 丁海霞 +2 位作者 刘瑞 宋增 李逸轩 《汕头大学学报(自然科学版)》 2024年第4期49-64,共16页
为优化文丘里蒸汽疏水阀内件结构,提高其自适应调节性能,以最大疏水范围比为目标,采用Central-Composite响应面设计和遗传算法对文丘里蒸汽疏水阀内件结构进行优化,并对优化前后结构进行分析.结果表明,通过代理模型进行优化设计,大大降... 为优化文丘里蒸汽疏水阀内件结构,提高其自适应调节性能,以最大疏水范围比为目标,采用Central-Composite响应面设计和遗传算法对文丘里蒸汽疏水阀内件结构进行优化,并对优化前后结构进行分析.结果表明,通过代理模型进行优化设计,大大降低了有限元计算量,提升了优化效率,利用遗传算法得到最佳结构参数为:收缩角为20.8°、喉部长度为4.3mm、扩散角为4.6℃.收缩角、喉部长度和扩散角三个几何参数相互关联,扩散角是影响疏水范围比的最有效参数,其中扩散角对疏水范围比具有负向影响,喉长和收缩角对疏水范围比具有非线性影响,且收缩角对疏水范围比的影响最小. 展开更多
关键词 文丘里蒸汽疏水阀 数值模拟 响应面优化法 热力学效应 遗传算法
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Successful resection of a huge retroperitoneal venous hemangioma:A case report 被引量:1
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作者 Yan Qin Peng Qiao +3 位作者 Xing Guan song zeng Xiao-Peng Hu Biao Wang 《World Journal of Clinical Cases》 SCIE 2022年第25期9096-9103,共8页
BACKGROUND Venous hemangioma is a benign and non-invasive type of tumor,which is rarely identified due to the absence of clinical manifestations.A retroperitoneal benign tumor is comparatively rare,and hemangioma is e... BACKGROUND Venous hemangioma is a benign and non-invasive type of tumor,which is rarely identified due to the absence of clinical manifestations.A retroperitoneal benign tumor is comparatively rare,and hemangioma is exceptional.Because of the different types and locations of hemangioma,presentations are varied;thus,establishing an accurate diagnosis before surgery is challenging.CASE SUMMARY A 45-year-old female patient visited our hospital with the complaint of a retroperitoneal mass without symptoms discovered during a medical examination.An abdominal and pelvic computed tomography(CT)revealed a giant hypodense mass that extended from the lower edge of the liver down to the right groin and showed no marked enhancement in the arterial phase of the enhanced CT.On magnetic resonance imaging,the retroperitoneal mass was hyperintense on the T2-weighted image and hypointense on the T1-weighted image.The mass was completely resected and confirmed as a venous hemangioma by pathology.CONCLUSION Venous hemangioma is rare in adults,and an accurate diagnosis before surgery is challenging.Surgery is the curative treatment for venous hemangioma,and the definitive diagnosis relies on pathology. 展开更多
关键词 Retroperitoneal hemangioma Venous hemangioma Diagnosis Case report
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生产性服务业TFP增长与制造业价值链升级
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作者 陈海波 曾松 陈赤平 《产业经济评论(山东)》 2019年第1期91-113,共23页
文章利用2004~2016年中国省际面板数据,对生产性服务业TFP增长影响制造业价值链升级的效应和机理进行了实证分析,结果发现:生产性服务业TFP增长能促进制造业价值链的过程升级和产品升级,而生产性服务业技术进步的促进作用更显著,东西部... 文章利用2004~2016年中国省际面板数据,对生产性服务业TFP增长影响制造业价值链升级的效应和机理进行了实证分析,结果发现:生产性服务业TFP增长能促进制造业价值链的过程升级和产品升级,而生产性服务业技术进步的促进作用更显著,东西部地区的促进作用较明显。进一步研究发现,知识溢出、交易成本、生产成本对生产性服务业TFP增长影响制造业价值链升级有正面的调节作用。因此,我国需不断推动生产性服务业TFP增长,促进我国制造业转型升级。 展开更多
关键词 生产性服务业 TFP增长 制造业 价值链升级
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