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- [21] Pancreatic Neuroendocrine Tumors: CT Enhancement, But Not Histologic Grade, Correlates With Tumor AggressionPANCREAS, 2018, 47 (03) : 360 - 360Yano, Motoyo论文数: 0 引用数: 0 h-index: 0机构: Washington Univ, Sch Med, St Louis, MO USA Washington Univ, Sch Med, St Louis, MO USAMisra, Sunil论文数: 0 引用数: 0 h-index: 0机构: Med Xray Inc, Cincinnati, OH USA Washington Univ, Sch Med, St Louis, MO USACarpenter, Danielle H.论文数: 0 引用数: 0 h-index: 0机构: St Louis Univ, Sch Med, St Louis, MO USA Washington Univ, Sch Med, St Louis, MO USASalter, Amber论文数: 0 引用数: 0 h-index: 0机构: Washington Univ, Sch Med, St Louis, MO USA Washington Univ, Sch Med, St Louis, MO USAHildebolt, Charles论文数: 0 引用数: 0 h-index: 0机构: Washington Univ, Sch Med, St Louis, MO USA Washington Univ, Sch Med, St Louis, MO USA
- [22] A preoperative computed tomography radiomics model to predict disease-free survival in patients with pancreatic neuroendocrine tumorsEUROPEAN JOURNAL OF ENDOCRINOLOGY, 2023, 189 (04) : 476 - 484Homps, Margaux论文数: 0 引用数: 0 h-index: 0机构: Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, France Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, FranceSoyer, Philippe论文数: 0 引用数: 0 h-index: 0机构: Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, France Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, FranceCoriat, Romain论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, AP HP, Dept Gastroenterol & Digest Oncol, F-75014 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, FranceDermine, Solene论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, AP HP, Dept Gastroenterol & Digest Oncol, F-75014 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, FrancePellat, Anna论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, AP HP, Dept Gastroenterol & Digest Oncol, F-75014 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, FranceFuks, David论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, APHP, Dept Surg, F-75014 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, FranceMarchese, Ugo论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, APHP, Dept Surg, F-75014 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, FranceTerris, Benoit论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, AP HP, Ctr Rare Adrenal Dis, Dept Pathol, F-75014 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, France论文数: 引用数: h-index:机构:Dohan, Anthony论文数: 0 引用数: 0 h-index: 0机构: Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, France Univ Paris Cite, Fac Med, F-75006 Paris, France Hop Cochin, APHP, Dept Diagnost & Intervent Imaging, F-75014 Paris, France论文数: 引用数: h-index:机构:
- [23] Automated radiomics model for preoperative pancreatic neuroendocrine tumor grade prediction.JOURNAL OF CLINICAL ONCOLOGY, 2025, 43 (4_SUPPL)Chandra, Pratik论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USANasar, Naaz论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USAGhahremannezhad, Hadi论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USASoares, Kevin论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USABalachandran, Vinod P.论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USADrebin, Jeffrey A.论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USAD'Angelica, Michael Ian论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USAKingham, T. Peter论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USAJarnagin, William R.论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USAChakraborty, Jayasree论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USAWei, Alice Chia-chi论文数: 0 引用数: 0 h-index: 0机构: Mem Sloan Kettering Canc Ctr, Dept Surg, New York, NY USA
- [24] MR imaging of thymomas: a combined radiomics nomogram to predict histologic subtypesEUROPEAN RADIOLOGY, 2021, 31 (01) : 447 - 457Xiao, Gang论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Funct & Mol Imaging Key Lab Shaanxi Prov, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaHu, Yu-Chuan论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Funct & Mol Imaging Key Lab Shaanxi Prov, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaRen, Jia-Liang论文数: 0 引用数: 0 h-index: 0机构: GE Healthcare, Beijing, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaQin, Peng论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Student Brigade, 169 Changle Rd, Xian 710032, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaHan, Jia-Cheng论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Student Brigade, 169 Changle Rd, Xian 710032, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaQu, Xiao-Yan论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaRong, Wei-Cheng论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Funct & Mol Imaging Key Lab Shaanxi Prov, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaYan, Wei-Qiang论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Funct & Mol Imaging Key Lab Shaanxi Prov, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaTian, Qiang论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Funct & Mol Imaging Key Lab Shaanxi Prov, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaHan, Yu论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Funct & Mol Imaging Key Lab Shaanxi Prov, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaWang, Wu-Ping论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Thorac Surg, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaWang, Shu-Mei论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Pathol, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaMa, Jiao论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Pathol, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaWang, Wen论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Funct & Mol Imaging Key Lab Shaanxi Prov, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R ChinaCui, Guang-Bin论文数: 0 引用数: 0 h-index: 0机构: Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China Funct & Mol Imaging Key Lab Shaanxi Prov, Xian, Shaanxi, Peoples R China Fourth Mil Med Univ, Tangdu Hosp, Dept Radiol, Xian 710038, Shaanxi, Peoples R China
- [25] MR imaging of thymomas: a combined radiomics nomogram to predict histologic subtypesEuropean Radiology, 2021, 31 : 447 - 457Gang Xiao论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalYu-Chuan Hu论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalJia-Liang Ren论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalPeng Qin论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalJia-Cheng Han论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalXiao-Yan Qu论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalWei-Cheng Rong论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalWei-Qiang Yan论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalQiang Tian论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalYu Han论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalWu-Ping Wang论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalShu-Mei Wang论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalJiao Ma论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalWen Wang论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu HospitalGuang-Bin Cui论文数: 0 引用数: 0 h-index: 0机构: Fourth Military Medical University,Department of Radiology, Tangdu Hospital
- [26] Prognostic value of CT-based radiomics in grade 1–2 pancreatic neuroendocrine tumorsCancer Imaging, 24Subin Heo论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterHyo Jung Park论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterHyoung Jung Kim论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterJung Hoon Kim论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterSeo Young Park论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterKyung Won Kim论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterSo Yeon Kim论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterSang Hyun Choi论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterJae Ho Byun论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterSong Cheol Kim论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterHee Sang Hwang论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical CenterSeung Mo Hong论文数: 0 引用数: 0 h-index: 0机构: University of Ulsan College of Medicine,Department of Radiology and Research Institute of Radiology, Asan Medical Center
- [27] A novel endoscopic ultrasomics-based machine learning model and nomogram to predict the pathological grading of pancreatic neuroendocrine tumorsHELIYON, 2024, 10 (14)Mo, Shuangyang论文数: 0 引用数: 0 h-index: 0机构: Guangxi Med Univ, Affiliated Hosp 1, Gastroenterol Dept, Nanning, Peoples R China Guangxi Med Univ, Liuzhou Peoples Hosp, Gastroenterol Dept, Liuzhou, Peoples R China Guangxi Med Univ, Affiliated Hosp 1, Gastroenterol Dept, Nanning, Peoples R ChinaWang, Yingwei论文数: 0 引用数: 0 h-index: 0机构: Guangxi Med Univ, Liuzhou Peoples Hosp, Gastroenterol Dept, Liuzhou, Peoples R China Guangxi Med Univ, Affiliated Hosp 1, Gastroenterol Dept, Nanning, Peoples R ChinaHuang, Cheng论文数: 0 引用数: 0 h-index: 0机构: Guangxi Med Univ, Liuzhou Peoples Hosp, Oncol Dept, Liuzhou, Peoples R China Guangxi Med Univ, Affiliated Hosp 1, Gastroenterol Dept, Nanning, Peoples R ChinaWu, Wenhong论文数: 0 引用数: 0 h-index: 0机构: Guangxi Med Univ, Liuzhou Peoples Hosp, Gastroenterol Dept, Liuzhou, Peoples R China Guangxi Med Univ, Affiliated Hosp 1, Gastroenterol Dept, Nanning, Peoples R ChinaQin, Shanyu论文数: 0 引用数: 0 h-index: 0机构: Guangxi Med Univ, Affiliated Hosp 1, Gastroenterol Dept, Nanning, Peoples R China Guangxi Med Univ, Affiliated Hosp 1, Gastroenterol Dept, Nanning, Peoples R China
- [28] Development and validation of a deep learning radiomics nomogram for preoperatively differentiating thymic epithelial tumor histologic subtypesEuropean Radiology, 2023, 33 : 6804 - 6816Xiangmeng Chen论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyBao Feng论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyKuncai Xu论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyYehang Chen论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyXiaobei Duan论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyZhifa Jin论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyKunwei Li论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyRonggang Li论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyWansheng Long论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of RadiologyXueguo Liu论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Central Hospital,Department of Radiology
- [29] Development and validation of a deep learning radiomics nomogram for preoperatively differentiating thymic epithelial tumor histologic subtypesEUROPEAN RADIOLOGY, 2023, 33 (10) : 6804 - 6816Chen, Xiangmeng论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaFeng, Bao论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R China Guilin Univ Aerosp Technol, Lab Artificial Intelligence Biomed, Guilin 541004, Guangxi, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaXu, Kuncai论文数: 0 引用数: 0 h-index: 0机构: Guilin Univ Aerosp Technol, Lab Artificial Intelligence Biomed, Guilin 541004, Guangxi, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaChen, Yehang论文数: 0 引用数: 0 h-index: 0机构: Guilin Univ Aerosp Technol, Lab Artificial Intelligence Biomed, Guilin 541004, Guangxi, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaDuan, Xiaobei论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Cent Hosp, Dept Nucl Med, Jiangmen 529030, Guangdong, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaJin, Zhifa论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaLi, Kunwei论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Affiliated Hosp 5, Dept Radiol, Zhuhai 519000, Guangdong, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaLi, Ronggang论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Cent Hosp, Dept Pathol, Jiangmen 529030, Guangdong, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaLong, Wansheng论文数: 0 引用数: 0 h-index: 0机构: Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R ChinaLiu, Xueguo论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Affiliated Hosp 7, Dept Radiol, Shenzhen 518107, Guangdong, Peoples R China Jiangmen Cent Hosp, Dept Radiol, Jiangmen 529030, Guangdong, Peoples R China
- [30] Evaluation of the histologic grade of pancreatic neuroendocrine tumors using CT texture analysis and perfusion parametersINTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL MEDICINE, 2019, 12 (01): : 771 - 779Cheng, Sihang论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Radiol, Shuaifuyuan 1,Wangfujing St, Beijing 100730, Peoples R China Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Radiol, Shuaifuyuan 1,Wangfujing St, Beijing 100730, Peoples R ChinaJin, Zhengyu论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Radiol, Shuaifuyuan 1,Wangfujing St, Beijing 100730, Peoples R China Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Radiol, Shuaifuyuan 1,Wangfujing St, Beijing 100730, Peoples R ChinaXue, Huadan论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Radiol, Shuaifuyuan 1,Wangfujing St, Beijing 100730, Peoples R China Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Radiol, Shuaifuyuan 1,Wangfujing St, Beijing 100730, Peoples R China