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改进的基于ASFCM婴幼儿脑部MRI分割算法 被引量:1
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作者 魏颖 张开 韩枫 《东北大学学报(自然科学版)》 EI CAS CSCD 北大核心 2017年第8期1079-1083,1092,共6页
在诸多FCM的改进算法中,ASFCM算法表现较好,该算法改变空间惩罚项结构,使目标函数连续,并且具有自适应的参数,但会出现无法抑制婴幼儿脑部MR图像噪声较大的问题.为了解决这个问题,在ASFCM算法基础上融合非局部权重和核函数思想,提出一... 在诸多FCM的改进算法中,ASFCM算法表现较好,该算法改变空间惩罚项结构,使目标函数连续,并且具有自适应的参数,但会出现无法抑制婴幼儿脑部MR图像噪声较大的问题.为了解决这个问题,在ASFCM算法基础上融合非局部权重和核函数思想,提出一种改进的ASFCM算法(KNL-ASFCM).采用本文算法,FCM,RFCM和ASFCM算法对加入不同种类和强度噪声的临床婴幼儿脑部MR图像进行实验.分析结果表明:本文算法的分割准确性和噪声抑制能力比其他三种算法均有一定的提高,对婴幼儿脑部MR图像分割问题具有明显优势. 展开更多
关键词 图像分割 核函数 ASFCM 婴幼儿脑部 MR图像
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A seven-year study on head injuries in infants, Iran——the changing pattern 被引量:1
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作者 Esmaeil Fakharian Mahdi Mohammadzadeh Samin Behdad Atoosa Babamohammadi Azadeh Sadat Mirzadeh Javad Mohammadzadeh 《Chinese Journal of Traumatology》 CAS CSCD 2014年第3期153-156,共4页
Objective: Head injury (HI) is the leading cause of mortality and life-long disability in infants. Infants have different anatomical and pathophysiological brain structures from other age groups. The aim of this st... Objective: Head injury (HI) is the leading cause of mortality and life-long disability in infants. Infants have different anatomical and pathophysiological brain structures from other age groups. The aim of this study was to survey infant HI patients admitted to Shahid Behest Hospital in Kashan, Iran from 2004 to 2010, and to identify the causes of His in this age group. Methods: In this retrospective study, all HI patients under the age of two who were hospitalized for more than 24 hours between January 2004 and January 2010 were enrolled in the study. Demographic, etiologic, and injury data were collected and a descriptive analysis was performed. Results: Infants comprised 20.8% of all children (under 15 years old) with His and 65.1% of the injuries occurred in the home. Falls were the most common cause of injury (63.4%). In hospital mortality was 6.6 per 100 000 infants. A decreasing trend was seen in home events, but His caused by traffic accidents were increasing during the study period. The amount of HI infants resulting from car accidents has tripled from the years 2004 to 2010. Conclusion: Although home events and falling are the main causes of infant His and need attention, our study showed an increase of His caused by road traffic accidents, especially by car accidents, thus legislation for the implementation of protective equipment such as child safety seats and programs is urgently needed. 展开更多
关键词 INFANT Brain injuries EPIDEMIOLOGY
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