目的:研究低剂量CT(low-dose CT,LDCT)在亚实性肺腺癌结节影像分期中的应用效果.方法:抽取43例亚实性肺腺癌患者为研究对象(2016年12月至2020年1月),所有患者均经病理检查明确为亚实性肺腺癌,予以CT诊断,进行结节影像分期.观察结节CT分期与病理分期情况.结果:CT诊断显示,GGO 44.19%,磨玻璃影25.58%,模糊结节30.23...
Low-Dose CT Image Denoising Using a Generative Adversarial Network with a Hybrid Loss Function for Noise Learning Wang. Low dose ct im- age denoising using a generative adversarial network with wasserstein distance and perceptual loss. IEEE transactions on medical ... Y Ma,B Wei,P Feng,... ...
Seven hundred seventy CT low-dose lung screening exams were retrospectively analyzed with the validated model. The average "desired" scan length was 252 mm with a standard deviation of 28 mm. The average "over-range" was 58.5 mm or 24%. The upper boundary (superior) on average had an "...
This study develops an improved Feldkamp–Davis–Kress (FDK) reconstruction algorithm using non-local total variation (NLTV) denoising and a cubic B-spline interpolation-based backprojector to enhance the image quality of low-dose cone-beam computed tomography (CBCT). The NLTV objective function is...
锐度检测网络:传统的低剂量CT转化的网络输出锐度都很低,作者在这里添加了锐度检测网络作用于生成器,使之生成锐度较高的图像。 实验: 作者根据SAGAN网络做了四组实验,实验数据分别是:模拟低剂量CT,小猪CT数据集,Catphan 600和kaggle17比赛两位患者的CT图像。
Poster: "ECR 2013 / C-1104 / Optimal low-dose levels in screening chest computed-tomography (CT) for minimal patient radiation and unimpaired detection of lung nodules with and without computer assisted detection (CAD)" by: "A. Christe1, Z. Szucs-Farkas2, A. Huber1, P. Steiger1, J. ...
The x-ray exposure to patients has become a major concern in computed tomography (CT) and minimizing the radiation exposure has been one of the major efforts in the CT field. Due to plenty high-attenuation tissues in the human chest, under low-dose scan protocols, thoracic low-dose CT (LD...
文章学习36“Low-Dose CT with a Residual Encoder-Decoder Convolutional Neural Network (RED-CNN)” TMI 2017的作品,本文的主要思想和2016年NIPS的RED基本一致,网络采用AE的结构,先用卷积层进行编码,再用反卷积层进行解码,中间通过skip结构连接,如下图所示。
不同指标下几个loss正好是相反的,但一开始loss都是下降所用应该是正相关,在MSE下,网络loss递增方向是:CNN-MSE<WGAN-MSE<WGAN-VGG<CNN-VGG,在VGG下,网络loss递增方向正好相反。在定量测量下,PSNR和SSIM结果如下表: 实验的CT重建结果如下:
The aim of the proposed work is to improve low-dose lung CT (LDCT) screening using the processing of weighted intensity averaging over large-scale neighborhoods (WIA-LN). Both current and voltage reductions were considered for LDCT imaging. In the WIA-LN method, the processed pixel intensities...