Noninvasive Detection of Coronary Artery Stenosis Using 16-slice Spiral CT：a Comparison with Selective X-ray Coronary Angiography

Multislice spiral CT(MSCT)has recently e-volved as a modalityfor non-invasive coronaryi ma-ging.16-slice MSCT allows excellent distal coro-nary coverage with higer temporal and spatial reso-lution.It can be usedto detect stenosis of coronaryartery with a diameter≥1.5cm[1,2].We investi-gated a group of coronary MSCT angiography(MSCTA)results,with those of selective X-raycoronary angiography(SCA)serving as the refer-ence standard.1MATERIALS AND METHODS1.1PatientsBetween July20…     

空气喷磨对预防性树脂充填微渗漏的影响

目的 :体外评价空气喷磨、酸蚀和两者结合对预防性树脂充填微渗漏的影响。方法 :对照组 (I,n =12 )对人离体磨牙常规预防性树脂充填。其余组分别用 5 0 μ(Ⅱ,Ⅲ)和 27μ(Ⅳ ,Ⅴ)氧化铝喷磨 ,其中两组 (Ⅳ ,Ⅴ)酸蚀 30s。每组一半牙齿进行热循环处理 (5～ 5 5℃ ,2500周 )后 ,用亚甲基蓝溶液着色。结果 :不论结合酸蚀与否 ,用 5 0 μ氧化铝喷磨 ,均与对照组不存在显著性差异 (p >0.05)。但喷磨后酸蚀比单纯喷磨能显著地减少微渗漏 (p<0.05)。 5 0 μ较 27μ氧化铝微粒显著地减少微渗漏(p <0.05)。结论 :空气喷磨结合酸蚀能显著地减少预防性树脂充填的微渗漏。     

cIMPACT‐NOW update 6: new entity and diagnostic principle recommendations of the cIMPACT‐Utrecht meeting on future CNS tumor classification and grading

cIMPACT‐NOW (the Consortium to Inform Molecular and Practical Approaches to CNS Tumor Taxonomy) was established to evaluate and make practical recommendations on recent advances in the field of CNS tumor classification, particularly in light of the rapid progress in molecular insights into these neoplasms. For Round 2 of its deliberations, cIMPACT‐NOW Working Committee 3 was reconstituted and convened in Utrecht, The Netherlands, for a meeting designed to review putative new CNS tumor types in advance of any future World Health Organization meeting on CNS tumor classification. In preparatory activities for the meeting and at the actual meeting, a list of possible entities was assembled and each type and subtype debated. Working Committee 3 recommended that a substantial number of newly recognized types and subtypes should be considered for inclusion in future CNS tumor classifications. In addition, the group endorsed a number of principles—relating to classification categories, approaches to classification, nomenclature, and grading—that the group hopes will also inform the future classification of CNS neoplasms.