Background: Magnetic resonance image-guided radiation therapy (MR-IGRT) promises more precise and effective radiation treatments compared to conventional IGRT b
The capability of the TrueBeam treatment system to deliver step and shoot IMRT plans at low dose rates was evaluated. Beam characteristics during low dose rates
冠心病是老年人中较为常见的基础性疾病,具有较高的发病率及死亡率[1]。数据[2]显示,饮食结构及生活习惯与冠心病的发作有较为密切的联系。优质护理以患者疾病为基础,以患者
杰克·富勒[美]说:“准确地、深刻地理解读者的兴趣应该成为报纸编辑的焦点.这可以帮助报纸决定在报道中应注意什么内容,因为满足读者兴趣是我们报纸业的一个奠基石.而且读者
Low-count SPECT images are well known to be smoothed strongly by a Butterworth filter for statistical noise reduction. Reconstructed images have a low signal-to
Influence of distinct radiotherapy techniques to induce second cancer risks in left breast cancer. Material and methods: Ten female patients with intact left br
Background: Treatment concepts for oropharyngeal squamous cell carcinomas are controversial. This review compares the results obtained by distinct treatment opt
刚刚结束的全国“两会”.因为微博而格外精彩。“这年头。没个‘围脖’,还真不好意思跟人打招呼。”如果说,新浪微博的这句广告语不无娱乐色彩和夸张成份,那么,“两会”中闪亮登场
为实现彩色图像的有效压缩,并且能达到较好的抑制噪声的目的,本文采用了一种基于全相位双正交三次U变换的新算法。首先,给原始图像分别加上高斯噪声和椒盐噪声,然后,将含有噪声的彩色图像由RGB空间转换到YUV空间,利用APBUT3矩阵作为变换矩阵对YUV的三个分量进行压缩编码,编码时对变换系数可采用均匀量化,能降低算法的时间复杂度。实验结果表明,在相同压缩比的情况下,APBUT3变换抗高斯噪声的效果与D
The purpose of this study is to investigate the potential use of Ir-192 as the source for real time imaging during HDR (High Dose Rate) brachytherapy treatment.