| 1 | 胰腺导管腺癌放射学报告模板:腹部放射协会和美国胰腺协会的共识声明显示文摘胰腺导管腺癌(PDA)是一种具有侵袭性、死亡率高的恶性肿瘤。在肿瘤分期时,通过影像学分析,合理判定肿瘤的范围,是患者治疗措施中最重要的步骤之一。考虑到不同医生在专业知识水平和疾病严重程度的判定有所差异,以及在放射学检查时经常缺乏相关影像学表现的完整报道,有必要采用标准化的影像学报告模板以及大家一致接受和认可的胰腺实性肿瘤术语。在腹部放射协会和美国胰腺协会的共同资助下,胰腺导管腺癌(PDA)多机构专家组(包括放射学专家、胃肠病学和肝胆胰外科学专家)共同发起了一份描述标准化报告模板的共识声明。采用这种标准化的影像学报告模板将能改进PDA患者的治疗决策过程,并可通过提供一份完整、相关、精准的疾病分期报告以优化治疗方案。通过对可行手术切除的患者恰当、一致的分期,标准化报告模板有助于促进临床和科研实验设计,从而实现在不同机构之间的实验结果的比较。 | Mahmoud M.Al-Hawary Isaac R.Francis Suresh T.Chari Elliot K.Fishman David M.Hough David S.Lu Michael Macari Alec J.Megibow Frank H.Miller Dushyant V.Sahani Diane M.Simeone 黄翔 孙灿辉 | 2014 | 影像诊断与介入放射学2014，23，4： | 52 |
| 2 | Time-resolved, defect-hosted, trace element mobility in deformedWitwatersrand pyrite显示文摘The Pb isotopic composition of rocks is widely used to constrain the sources and mobility of melts and hydrothermal fluids in the Earth's crust. In many cases, the Pb isotopic composition appears to represent mixing of multiple Pb reservoirs. However, the nature, scale and mechanisms responsible for isotopic mixing are not well known. Additionally, the trace element composition of sulphide minerals are routinely used in ore deposit research, mineral exploration and environmental studies, though little is known about element mobility in sulphides during metamorphism and deformation. To investigate the mechanisms of trace element mobility in a deformed Witwatersrand pyrite(FeS_2), we have combined electron backscatter diffraction(EBSD) and atom probe microscopy(APM). The results indicate that the pyrite microstructural features record widely different Pb isotopic compositions, covering the entire range of previously published sulphide Pb compositions from the Witwatersrand basin. We show that entangled dislocations record enhanced Pb, Sb, Ni, Tl and Cu composition likely due to entrapment and short-circuit diffusion in dislocation cores. These dislocations preserve the Pb isotopic composition of the pyrite at the time of growth(~3 Ga) and show that dislocation intersections, likely to be common in deforming minerals, limit trace element mobility. In contrast, Pb, As, Ni, Co, Sb and Bi decorate a highangle grain boundary which formed soon after crystallisation by sub-grain rotation recrystallization.Pb isotopic composition within this boundary indicates the addition of externally-derived Pb and trace elements during greenschist metamorphism at ~2 Ga. Our results show that discrete Pb reservoirs are nanometric in scale, and illustrate that grain boundaries may remain open systems for trace element mobility over 1 billion years after their formation. | Denis Fougerouse Steven M.Reddy Christopher L.Kirkland David W.Saxey William D.Rickard Robert M.Hough | 2019 | Geoscience Frontiers2019，10，1： | 2 |
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