examined by both ULD- and SD-CT were identified to determine post hoc size-specific dose estimates (SSDEs).ResultsULD-CT dose was inversely related to patient size; average lung doses summarised in terms of patient size BMI23/29 are 5.2/8.1 (SD-CT), 0.56/0.35 (ULD-CT) and 0.05/0.13...
本文提出了一种利用两个连续卷积神经网络在低剂量胸部CT中自动检测冠状动脉、胸主动脉和心脏瓣膜钙化点的方法。第一个网络根据潜在钙化点的解剖位置来识别和标记潜在钙化点,第二个网络识别检测到的候选钙化点中的真实钙化点。 这种方法是在国家肺... 查看原文 ...
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. ...
Thin-section, high-resolution (1.0/1.5 mm thick slices), low-dose chest CT scans were performed in 55 infants and children. The studies were carried out with 1-and 2-s scan (data acquisition) times using a high-resolution (bone) algorithm. Although there was some motion artifact, the stu...
Low-dose computed tomography (LDCT) of the chest is a recommended diagnostic tool in early stage of COVID-19 pneumonia. High age, several comorbidities as well as poor physical fitness can negatively influence the outcome within COVID-19 infection. We investigated whether the ratio of fat to ...
PURPOSE We aimed to evaluate the diagnostic performance of low-dose chest computed tomography (CT) in patients under investigation for coronavirus disease 2019 (COVID-19). METHODS This retrospective study included 330 patients suspected of having COVID-19 from March 15 to April 16, 2020. We ...
The purpose of this study was to evaluate the impact of ultralow radiation dose single-energy computed tomographic (CT) acquisitions with Sn prefiltration and third-generation iterative reconstruction on density-based quantitative measures of growing interest in phenotyping pulmonary disease. The effects ...
Objective To assess the program of low dose chest CT screening with iterative reconstruction technique(iDose4).Methods Totally 120 subjects who underwent chest CT screening were divided into 3 groups according to body mass index(BMI): Group A(BMI≤22),group B(22BMI26) and group C(BMI≥26)...
(1) Full-volume model:构建3D CNN模型对整个CT进行端到端的分析。 (2) Cancer ROI detection model:训练了一个CNN ROI 检测模型来检测CT中的3D候选肿瘤区域。 (3) CNN癌症风险预测模型:根据癌症ROI检测模型和全体积模型的输出进行操作。 三、关键技术 ...
dose prospectively-gated exams. "The most significant aspect of our study was to demonstrate that pre-operative evaluation of cardiothoracic surgery patients can be reliably and accurately performed with low-dose chest CT that results in a radiation dose reduction of 42% when compared with ...