低剂量CT 1. Analytical noise treatment for low-dose CT projection data by penalized weighted least-square smoothing in the K-L domain; 利用K-L域惩罚加权最小均方平滑对低剂量CT投影数据进行噪声滤除(英文) 2. Low-dose CT can screen more patients in early stage, however, overdiagnosis, cost an...
Low-dose computed tomography (CTIonizing radiationRadiation exposureX-rayTissueUrinaryBeam collimation widthPost-data acquisition protocolsImaging modalities such as ultrasound do not have the sensitivity and specificity of computed tomography (CT) scan in the accurate assessment of urolithiasis. However, ...
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...
摘要: 目的探讨低剂量CT扫描在早产儿中的应用和防护意义。方法40例随机等分成2组分别行低剂量50mAs及常规剂量250mAsCT扫描,统一于左基底节区测量、记录CT值及标准差(SD),并比对两组剂量之噪声、图像质量及CT剂量加权指数(CTDIw)和全头颅扫描剂量长度乘积(DLP)。结果...
4.DoseCheckManagementWhitePaper 肺癌筛查现状 ⚫预防医学工作组(USPSTF)和医疗与医疗救助服务 1 (CMS)推荐对高风险个人实施低剂量CT肺癌筛查。 ⚫医疗已经批准对其受益人中有资格进行低剂量CT肺癌筛查 2 的高风险患者给予医保报销。 3 ⚫放射学院建议应用可靠的低剂量CT肺筛查方案。
摘要: 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%... 查看全部>> ...
The aim of our study was to assess the image quality, radiation dose, and clinical applicability of low-dose, volumetric helical CT in the evaluation of bronchiectasis. Volumetric helical CT scans (120 kVp, 3-mm collimation, pitch of 2, and reconstruction interval of 2 mm) were obtained thro...
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PURPOSE A novel coronary scan mode was introduced with a 128-slice dual source CT scanner in 2008: A high pitch (3.4) spiral scan mode (Flash) acquires the heart in of a second . We applied an algorithm for scan protocol selection (FLASH vs Adaptive Sequence vs Spiral), and evaluated di...
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 ...