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《医学前沿(英文)》 doi: 10.1007/s11684-023-1011-0
关键词: Paxlovid hemodialysis SARS-CoV-2 viral load chest CT scan
Weiwei CHEN, Jianpin QI, Wenzhen ZHU, Wenhua HUANG, Jinmei SONG
《医学前沿(英文)》 2009年 第3卷 第2期 页码 230-235 doi: 10.1007/s11684-009-0023-8
关键词: computed tomography angiography computed tomography perfusion
Trauma-induced “Macklin effect” with pneumothorax and large pneumomediastinum, disguised by allergy
null
《医学前沿(英文)》 2013年 第7卷 第3期 页码 386-388 doi: 10.1007/s11684-013-0278-y
A 56-year-old man presented spontaneously to the Emergency Department complaining of facial and neck oedema after assumption of nonsteroidal anti-inflammatory drugs (NSAIDS). The triage nurse assigned the patient to Accident & Emergency (A&E) doctor as probable allergic reaction to NSAIDS. Chest X-ray (CXR), ordered after 24 hours, revealed a huge subcutaneous chest and neck emphysema without clearly visible pneumothorax. Subsequent chest CT scan showed a small left pneumothorax and a large amount of air in the mediastinum. The patient was conservatively treated since he was eupnoeic and hemodynamically stable. The pathophysiology of pneumomediastinum was first described by Macklin in 1939. The Macklin effect involves alveolar ruptures with air dissection along bronchovascular sheaths to the mediastinum. In this case the patient did not report in his history a recent blunt thoracic trauma and the initial suspicion of an allergic reaction has prevented physicians to immediately achieve the correct diagnosis.
关键词: thoracic trauma differential diagnosis critical care pneumothorax pneumomediastinum CT scan pitfalls lung and airways physiology
结合全变分最小化和稀疏字典学习后处理的低剂量CT重建 Article
Yong DING, Tuo HU
《信息与电子工程前沿(英文)》 2017年 第18卷 第12期 页码 2001-2008 doi: 10.1631/FITEE.1700287
Low-dose CT for lung cancer screening: opportunities and challenges
null
《医学前沿(英文)》 2018年 第12卷 第1期 页码 116-121 doi: 10.1007/s11684-017-0600-1
Lung cancer is among the most frequently diagnosed cancers worldwide and the leading cause of cancer death in both males and females. Screening for lung cancer coupled with earlier intervention has long been studied as an approach to mortality reduction. However, minimal progress was achieved until recently, when low-dose spiral computed tomography (LDCT) screening demonstrated a 20% reduction in mortality from lung cancer in a randomized controlled trial (RCT), the National Lung Screening Trial, from the United States. On the basis of this finding, LDCT has been recommended for lung cancer screening in high-risk populations by several clinical guidelines. However, results from the following independent RCTs in Europe failed to show consistent conclusions. In addition, intractable problems gradually emerged with the progress of LDCT screening. This paper summarizes and discusses the main observations and challenges of LDCT screening for lung cancer. Before spreading implementation of LDCT screening, challenges, including high false-positive rates, overdiagnosis, enormous costs, and radiation risk, must be addressed. Complementary biomarkers and technical improvement are expected in the field of lung cancer screening in the near future.
关键词: lung cancer low-dose computerized tomography early detection opportunities challenges
张光烈,郑南宁,吴勇,张霞
《中国工程科学》 2001年 第3卷 第6期 页码 41-47
视频格式转换是当前数字化处理电视和新一代的全数字电视中一项重要的技术。把具有图像边缘保持特性的降噪滤波器与运动自适应的逐行插补算法相结合,提出一种新的视频格式转换算法,并进一步讨论该算法硬件实现的原理和结构。文中所提出的算法已用FPGA芯片实现,实验结果表明该算法十分有效。
关键词: 扫描格式转换 运动自适应插补 保持边缘的自适应滤波器
The dynamic correction of collimation errors of CT slicing pictures
LIU Ya-xiong, Sekou Sing-are, LI Di-chen, LU Bing-heng
《机械工程前沿(英文)》 2006年 第1卷 第2期 页码 168-172 doi: 10.1007/s11465-006-0016-0
吴勇,张光烈,郑南宁,张霞
《中国工程科学》 2001年 第3卷 第4期 页码 56-62
文章提出了一种新的自适应帧频提升算法,并深人研究了它的快速硬件实现方法。该算法通过引入 内部参数和加权块匹配误差,来进行自适应运动补偿,因而它可以有效地消除噪声的影响,并便于硬件实现。最后,通过建立对应于可变参数的因子査找表和采用现场可编程逻辑器件(FPGA)快速实现了扫描格式转换中的帧频提升算法,并应用在实际系统中,实验结果表明该算法十分有效。
丁勇,陆生礼,时龙兴
《中国工程科学》 2007年 第9卷 第10期 页码 49-54
为实现隔行扫描到逐行扫描的视频扫描格式转换,提出了一种时空权重和边缘自适应的去隔行算法,主要包括运动估计、小角度边缘搜索、时空权重计算、自适应插值等。该算法通过4场相邻像素的最大灰度变化与运动阈值比较实现对当前像素的运动估计,采用自适应搜索半径和并行搜索树的方法实现小角度边缘检测,并且增加对半像素边缘的考虑实现最小6°边缘的检测,最后通过时空权重自适应的插值算法实现去隔行处理,取得很好的处理效果。
《结构与土木工程前沿(英文)》 页码 1264-1280 doi: 10.1007/s11709-023-0921-x
关键词: MIP XRμCT aging diesel content pore structure permeability characteristics
Creep-fatigue crack growth behavior in GH4169 superalloy
Dianyin HU, Xiyuan WANG, Jianxing MAO, Rongqiao WANG
《机械工程前沿(英文)》 2019年 第14卷 第3期 页码 369-376 doi: 10.1007/s11465-018-0489-7
关键词: crack growth rate creep-fatigue GH4169 superalloy CT specimen dwell time
ZHAO Jizong, WANG Dejiang, WANG Shuo, YUAN Ge, KANG Shuai, JI Nan, ZHAO Yuanli, YE Xun, ZHOU Liangfu, ZHOU Dingbiao, WANG Renzhi, WANG Mei
《医学前沿(英文)》 2007年 第1卷 第2期 页码 142-146 doi: 10.1007/s11684-007-0027-1
关键词: tomographic-guided aspiration single-blinded manner favorable outcome operation Glasgow
A study on quality evaluation for bituminous mixture using X-ray CT
Satoshi TANIGUCHI, Keiichiro OGAWA, Jun OTANI, Itaru NISHIZAKI
《结构与土木工程前沿(英文)》 2013年 第7卷 第2期 页码 89-101 doi: 10.1007/s11709-013-0197-7
关键词: asphalt concrete mixture aggregate bitumen bitumen content quality evaluation X-ray CT
A miniature triaxial apparatus for investigating the micromechanics of granular soils with
Zhuang CHENG, Jianfeng WANG, Matthew Richard COOP, Guanlin YE
《结构与土木工程前沿(英文)》 2020年 第14卷 第2期 页码 357-373 doi: 10.1007/s11709-019-0599-2
关键词: triaxial apparatus X-ray μCT in situ test micro-scale mechanical behavior granular soils
Toshifumi MUKUNOKI, Naoko KUMANO, Jun OTANI
《结构与土木工程前沿(英文)》 2012年 第6卷 第2期 页码 85-100 doi: 10.1007/s11709-012-0159-5
关键词: relative density grain property model test road subsidence underground pipe image processing X-ray CT
标题 作者 时间 类型 操作
A pilot study on Paxlovid therapy for hemodialysis patients with severe acute respiratory syndrome coronavirus 2 infections
期刊论文
Simultaneous acquisition of CT angiography and whole brain CT perfusion images by using multiphase dynamichelical scan on 16 MDCT
Weiwei CHEN, Jianpin QI, Wenzhen ZHU, Wenhua HUANG, Jinmei SONG
期刊论文
Trauma-induced “Macklin effect” with pneumothorax and large pneumomediastinum, disguised by allergy
null
期刊论文
The dynamic correction of collimation errors of CT slicing pictures
LIU Ya-xiong, Sekou Sing-are, LI Di-chen, LU Bing-heng
期刊论文
Analyzing the characterization of pore structures and permeability of diesel contaminated clays under different aging conditions
期刊论文
Creep-fatigue crack growth behavior in GH4169 superalloy
Dianyin HU, Xiyuan WANG, Jianxing MAO, Rongqiao WANG
期刊论文
Comparison of CT-guided aspiration to key hole craniotomy in the surgical treatment of spontaneous putaminal
ZHAO Jizong, WANG Dejiang, WANG Shuo, YUAN Ge, KANG Shuai, JI Nan, ZHAO Yuanli, YE Xun, ZHOU Liangfu, ZHOU Dingbiao, WANG Renzhi, WANG Mei
期刊论文
A study on quality evaluation for bituminous mixture using X-ray CT
Satoshi TANIGUCHI, Keiichiro OGAWA, Jun OTANI, Itaru NISHIZAKI
期刊论文
A miniature triaxial apparatus for investigating the micromechanics of granular soils with
Zhuang CHENG, Jianfeng WANG, Matthew Richard COOP, Guanlin YE
期刊论文