Results 61 to 70 of about 3,651 (156)
[Feasibility Study of Ultra-High-Resolution Low-Dose Temporal Bone CT with 1 024×1 024 Reconstruction Matrix Size]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2021 Zeng LM +8 more
europepmc +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2016 摘 要: 【目的】 探讨心脏起搏器或植入型心律转复除颤器导线穿孔患者心脏多层螺旋CT增强扫描的影像学表现和诊断价值?【方法】 分析经临床?多种影像学检查及手术探查等证实的10例导线穿孔患者的心脏CT表现,判断导线穿孔与否?穿孔位置?有否合并心包积液?有无对比剂漏出至心包腔内?导线及其头端伪影?【结果】 10例患者中仅1例胸部X线可明确诊断,6例超声心动图结合新发心包积液及起搏器程控参数诊断导线穿孔?心脏CT检查含常规CT增强扫描5例,序贯式心电门控CT增强扫描及随后的延迟增强扫描5例 ...
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Zhongguo shiyan zhenduanxue, 2015 近年来,随着科技的进步和医疗技术水平的提高,多层螺旋CT已在临床得到广泛应用,并发挥着重要作用,其横扫图像具有较高的密度分辨率[1],能准确定位病变部位,显示病变大小、数目、形态及其与周围组织的关系,快速扫描可连续采集图像,患者一次屏气即可完成整个肝脏的扫描,进而避免呼吸移位引起的病变遗漏[2],多层螺旋CT后处理技术方便、快捷、准确,可获得质量最佳的图像 ...
梁康炎
doaj
Mechanical properties and crack propagation law of coal under different CO2 adsorption time [PDF]
The structural deformation caused by CO2 adsorption has a significant effect on the stability of coal seam. The authors studied the effect of CO2 adsorption time on the mechanical properties of coal and analyzed the variation of mechanical parameters of ...
CHEN Lipeng +5 more
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Long-term Survival of Personalized Surgical Treatment of Locally Advanced Non-small Cell Lung Cancer Based on Molecular Staging [PDF]
, 2011 Background and objective Approximately 35%-40% of patients with newly diagnosed non-small cell Lung cancer have locally advanced disease. The average survival time of these patients only have 6-8 months with chemotherapy.
Bin LIU +16 more
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Zhongshan Daxue xuebao. Yixue kexue ban, 2009 【目的】 通过动物模拟相应体质量低龄小儿,初步摸索出CT扫描显示其正常解剖结构的最低管电流,再应用于临床,避免研究中对小儿造成过度辐射65377; 【方法】 用10 ~ 12 kg比格犬和18 ~ 23 kg幼猪模拟 < 16 kg和16 ~ 25 kg两组低龄小儿65377;先行预扫描,初步确定最低管电流值后进行实验65377;双盲法评价图像质量65377;以常规剂量扫描所获图像为基础片,从①图像伪影;②质地(噪声);③组织结构的显示;④扫描脏器与周围组织的对比四个方面评价65377 ...
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Zhongguo shiyan zhenduanxue, 2010 目的探讨眼眶容积的CT测量在眼眶爆裂性骨折中的应用。方法应用CT测量和计算机软件,对78例眼眶爆裂性骨折患者的患侧和对侧正常眼的眼眶分别行轴扫和冠状扫描,并计算双侧眼眶容积平均值之差。结果患眼眼眶容积比对侧键眼眼眶容积增加,其增加量与眼球内陷度接近正相关即眼眶容积增加1 ml,眼球内陷数约为0.9 mm。采用轴位和冠状位两种方法测量两侧眼眶容积的平均值之差分别为:眼眶下壁骨折为0.35 ml、2.251 ml,内壁骨折为3.06 ml0、.51 ml,内壁联合下壁骨折为3.64 ml、3.31 ml ...
赵松花 +5 more
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胃低张充气64层螺旋CT三期增强扫描对胃癌术前TNM分期的临床价值
Zhongguo shiyan zhenduanxue, 2011 目的探讨低张充气64层螺旋CT三期增强扫描对胃癌术前TNM分期的应用价值。方法回顾性分析经术后病理和（或）胃镜活检证实的50例胃癌患者术前一周行低张充气64层螺旋CT三期增强扫描后的TNM分期,并与病理结果相对照。结果 50例患者胃壁浸润深度的T1-T4分期结果准确性分别为66.7%、75.0%、76.9%、75.0%,总准确性为74.0%,淋巴结N0-2转移的准确性分别为68.8%、54.5%、66.7%,远处转移的M0和M1的准确性分别为100%和85.7%,与手术病理对照一致性良好 ...
刘坤, 李梓萌, 李祎
doaj
Microscopic fracture characterization and permeability evolutionary patterns of granites under cyclic thermal shock [PDF]
ObjectiveThis study aims to reveal the microscopic damage characteristics and permeability evolutionary patterns of high-temperature granite reservoirs fractured under cyclic thermal shock produced by low-temperature fluids like drilling fluids and ...
Chengcheng REN +5 more
core +1 more source
Zhongguo shiyan zhenduanxue, 2019 随着医学影像技术的不断更新和发展,近年来早期肺癌的阳性诊断率逐年提高。已有文献指出,肺磨玻璃结节(ground-glass nodules,GGN)为原发性肺腺癌患者早期诊断一个重要的CT表现[1-3]。但CT检查辐射剂量较高,因此常规CT扫描难以成为肺部的筛查手段。近年来胸部低剂量CT(low-dose CT,LDCT)筛查广泛应用于临床诊断及健康体检,肺部结节的阳性检出率逐年升高[4,5]。本研究旨在比较肺磨玻璃结节(ground-glass nodules,GGN ...
余琼, 李畅, 宋玉明
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