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Chest CT for screening for lung cancer

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https://www.readbyqxmd.com/read/28724283/lung-cancer-screening-with-low-dose-ct-in-female-never-smokers-retrospective-cohort-study-with-long-term-national-data-follow-up
#1
Hyae Young Kim, Kyu-Won Jung, Kun Young Lim, Soo-Hyun Lee, Jae Kwan Jun, Jeongseon Kim, Bin Hwangbo, Jin Soo Lee
Purpose: Because of growing concerns about lung cancer in female never smokers, low-dose chest CT (LDCT) screening is often performed although it has never shown clinical benefits. We examine whether or not female never smokers really need annual LDCT screening when the initial LDCT showed negative findings. Materials and Methods: This retrospective cohort study included 4,365 female never smokers aged 40 to 79 years who performed initial LDCT from Aug 2002 to Dec 2007...
July 17, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28712697/hepatic-steatosis-in-participants-in-a-program-of-low-dose-ct-screening-for-lung-cancer
#2
Xiangmeng Chen, Kunwei Li, Rowena Yip, Ponni Perumalswami, Andrea D Branch, Sara Lewis, David Del Bello, Betsy J Becker, David F Yankelevitz, Claudia I Henschke
OBJECTIVE: Determine the frequency of moderate-to-severe hepatic steatosis (HS) in asymptomatic participants in a low-dose CT (LDCT) screening program for lung cancer, to identify risk factors, and develop recommendations. METHODS: Baseline LDCT scans of the chest of 170 participants in an IRB-approved study between August 2011 and April 2016 were reviewed. Demographic variables, comorbidities, and liver function tests were documented. Hepatic and splenic attenuation values hounsfield unit (HU) were measured...
June 27, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28709441/mortality-outcomes-of-low-dose-computed-tomography-screening-for-lung-cancer-in-urban-china-a-decision-analysis-and-implications-for-practice
#3
Zixing Wang, Wei Han, Weiwei Zhang, Fang Xue, Yuyan Wang, Yaoda Hu, Lei Wang, Chunwu Zhou, Yao Huang, Shijun Zhao, Wei Song, Xin Sui, Ruihong Shi, Jingmei Jiang
BACKGROUND: Mortality outcomes in trials of low-dose computed tomography (CT) screening for lung cancer are inconsistent. This study aimed to evaluate whether CT screening in urban areas of China could reduce lung cancer mortality and to investigate the factors that associate with the screening effect. METHODS: A decision tree model with three scenarios (low-dose CT screening, chest X-ray screening, and no screening) was developed to compare screening results in a simulated Chinese urban cohort (100,000 smokers aged 45-80 years)...
July 14, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28694742/clinical-validation-of-a-blood-based-classifier-for-diagnostic-evaluation-of-asymptomatic-individuals-with-pulmonary-nodules
#4
Charles E Birse, Jennifer L Tomic, Harvey I Pass, William N Rom, Robert J Lagier
BACKGROUND: The number of pulmonary nodules detected in the US is expected to increase substantially following recent recommendations for nationwide CT-based lung cancer screening. Given the low specificity of CT screening, non-invasive adjuvant methods are needed to differentiate cancerous lesions from benign nodules to help avoid unnecessary invasive procedures in the asymptomatic population. We have constructed a serum-based multi-biomarker panel and assessed its clinical accuracy in a retrospective analysis of samples collected from participants with suspicious radiographic findings in the Prostate, Lung, Chest and Ovarian (PLCO) cancer screening trial...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28637439/a-qualitative-analysis-of-smokers-perceptions-about-lung-cancer-screening
#5
Lindsay Gressard, Amy S DeGroff, Thomas B Richards, Stephanie Melillo, Julia Kish-Doto, Christina L Heminger, Elizabeth A Rohan, Kristine Gabuten Allen
BACKGROUND: In 2013, the US Preventive Services Task Force (USPSTF) began recommending lung cancer screening for high risk smokers aged 55-80 years using low-dose computed tomography (CT) scan. In light of these updated recommendations, there is a need to understand smokers' knowledge of and experiences with lung cancer screening in order to inform the design of patient education and tobacco cessation programs. The purpose of this study is to describe results of a qualitative study examining smokers' perceptions around lung cancer screening tests...
June 21, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28612037/large-scale-image-region-documentation-for-fully-automated-image-biomarker-algorithm-development-and-evaluation
#6
Anthony P Reeves, Yiting Xie, Shuang Liu
With the advent of fully automated image analysis and modern machine learning methods, there is a need for very large image datasets having documented segmentations for both computer algorithm training and evaluation. This paper presents a method and implementation for facilitating such datasets that addresses the critical issue of size scaling for algorithm validation and evaluation; current evaluation methods that are usually used in academic studies do not scale to large datasets. This method includes protocols for the documentation of many regions in very large image datasets; the documentation may be incrementally updated by new image data and by improved algorithm outcomes...
April 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28482765/incidental-renal-tumours-on-low-dose-ct-lung-cancer-screening-exams
#7
Paul F Pinsky, Barbara Dunn, David Gierada, P Hrudaya Nath, Reginald Munden, Lincoln Berland, Barnett S Kramer
Introduction Renal cancer incidence has increased markedly in the United States in recent decades, largely due to incidentally detected tumours from computed tomography imaging. Here, we analyze the potential for low-dose computed tomography lung cancer screening to detect renal cancer. Methods The National Lung Screening Trial randomized subjects to three annual screens with either low-dose computed tomography or chest X-ray. Eligibility criteria included 30 + pack-years, current smoking or quit within 15 years, and age 55-74...
June 2017: Journal of Medical Screening
https://www.readbyqxmd.com/read/28463881/emphysema-and-soluble-cd14-are-associated-with-pulmonary-nodules-in-hiv-infected-patients-implications-for-lung-cancer-screening
#8
Matthew Triplette, Keith M Sigel, Alison Morris, Shahida Shahrir, Juan P Wisnivesky, Chung Y Kong, Phillip T Diaz, Alycia Petraglia, Kristina Crothers
OBJECTIVE: Lung cancer screening may benefit HIV-infected (HIV) smokers because of an elevated risk of lung cancer, but may have unique harms because of HIV-specific risk factors for false-positive screens. This study seeks to understand whether inflammatory biomarkers and markers of chronic lung disease are associated with noncalcified nodules at least 4 mm (NCN) in HIV compared with uninfected patients. DESIGN: This is a cohort study of Examinations of HIV-Associated Lung Emphysema (EXHALE), including 158 HIV and 133 HIV-uninfected participants...
July 31, 2017: AIDS
https://www.readbyqxmd.com/read/28424361/computed-tomographic-findings-in-subjects-who-died-from-respiratory-disease-in-the-national-lung-screening-trial
#9
Esther Pompe, Pim A de Jong, David A Lynch, Nikolas Lessmann, Ivana Išgum, Bram van Ginneken, Jan-Willem J Lammers, Firdaus A A Mohamed Hoesein
We evaluated the prevalence of significant lung abnormalities on computed tomography (CT) in patients who died from a respiratory illness other than lung cancer in the National Lung Screening Trial (NLST).In this retrospective case-control study, NLST participants in the CT arm who died of respiratory illness other than lung cancer were matched for age, sex, pack-years and smoking status to a surviving control. A chest radiologist and a radiology resident blinded to the outcome independently scored baseline CT scans visually and qualitatively for the presence of emphysema, airway wall thickening and fibrotic lung disease...
April 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28422152/towards-automatic-pulmonary-nodule-management-in-lung-cancer-screening-with-deep-learning
#10
Francesco Ciompi, Kaman Chung, Sarah J van Riel, Arnaud Arindra Adiyoso Setio, Paul K Gerke, Colin Jacobs, Ernst Th Scholten, Cornelia Schaefer-Prokop, Mathilde M W Wille, Alfonso Marchianò, Ugo Pastorino, Mathias Prokop, Bram van Ginneken
The introduction of lung cancer screening programs will produce an unprecedented amount of chest CT scans in the near future, which radiologists will have to read in order to decide on a patient follow-up strategy. According to the current guidelines, the workup of screen-detected nodules strongly relies on nodule size and nodule type. In this paper, we present a deep learning system based on multi-stream multi-scale convolutional networks, which automatically classifies all nodule types relevant for nodule workup...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421812/the-frequency-of-incidental-findings-and-subsequent-evaluation-in-low-dose-ct-scans-for-lung-cancer-screening
#11
Lillie Morgan, Humberto Choi, Michal Reid, Ali Khawaja, Peter J Mazzone
RATIONALE: The USPSTF recommends lung cancer screening with low-dose chest CT scans (LDCT) for a well-defined high-risk population. Data on the frequency and impact of incidental findings on LDCT scans performed within a centralized lung cancer screening program has not been reported. OBJECTIVES: Previous studies have reported IFs in the setting of clinical trials. We present our findings in a real clinical setting where the decision to manage these findings may depend on factors that are not captured in a research trial such as disclosing IFs, patient preferences, severity of comorbidities, and physician expertise...
April 19, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28339311/lung-rads-category-4x-does-it-improve-prediction-of-malignancy-in-subsolid-nodules
#12
Kaman Chung, Colin Jacobs, Ernst T Scholten, Jin Mo Goo, Helmut Prosch, Nicola Sverzellati, Francesco Ciompi, Onno M Mets, Paul K Gerke, Mathias Prokop, Bram van Ginneken, Cornelia M Schaefer-Prokop
Purpose To evaluate the added value of Lung CT Screening Reporting and Data System (Lung-RADS) assessment category 4X over categories 3, 4A, and 4B for differentiating between benign and malignant subsolid nodules (SSNs). Materials and Methods SSNs on all baseline computed tomographic (CT) scans from the National Lung Cancer Trial that would have been classified as Lung-RADS category 3 or higher were identified, resulting in 374 SSNs for analysis. An experienced screening radiologist volumetrically segmented all solid cores and located all malignant SSNs visible on baseline scans...
July 2017: Radiology
https://www.readbyqxmd.com/read/28331824/volume-versus-diameter-assessment-of-small-pulmonary-nodules-in-ct-lung-cancer-screening
#13
REVIEW
Daiwei Han, Marjolein A Heuvelmans, Matthijs Oudkerk
Currently, lung cancer screening by low-dose chest CT is implemented in the United States for high-risk persons. A disadvantage of lung cancer screening is the large number of small-to-intermediate sized lung nodules, detected in around 50% of all participants, the large majority being benign. Accurate estimation of nodule size and growth is essential in the classification of lung nodules. Currently, manual diameter measurements are the standard for lung cancer screening programs and routine clinical care. However, European screening studies using semi-automated volume measurements have shown higher accuracy and reproducibility compared to diameter measurements...
February 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28331822/risk-assessment-in-relation-to-the-detection-of-small-pulmonary-nodules
#14
REVIEW
John K Field, Michael W Marcus, Matthijs Oudkerk
The National Lung Cancer Screening trial (NLST) demonstrated that individuals assigned to the LDCT screening arm had a 20% lower mortality than those who were assigned to the conventional chest radiography. The NLST was thoroughly analyzed by the US Preventive Task Force on CT Screening and they recommended that lung cancer screening should be implemented. A number of other countries have also recommended implementation, whilst others are awaiting the outcome of the NELSON Trial. However, recommendations for the management of CT screen detected nodules have only recently had any clarity...
February 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28302218/-investigation-of-lung-cancer-patients-complicated-with-chronic-obstructive-pulmonary-disease-in-thoracic-surgical-department
#15
Rongbao Zhang, Xingyu Tan, Qing Chen, Jingan Wei, Jun Gai, Yan Wang, Ziyi Yang, Jing Li, Liyu Zhu, Zhongxian Huang, Quanying He
BACKGROUND: Lung cancer is an important complication of chronic obstructive pulmonary disease (COPD), and even significantly affects the prognosis of patients with COPD. COPD also affects the postoperative complications and recurrence in patients with lung cancer. This study aims to investigate lung cancer patients complicated with COPD in thoracic surgical department. METHODS: All medical records of lung cancer patients discharged from the Department of Thoracic Surgery of People's Hospital, Peking University during January 2015 and December 2015 were reviewed, including gender, age, tobacco smoke history, harmful occupational exposure, clinic symptom, chest computed tomography (CT) scanning, postoperative pathology result report, discharged diagnosis and spirometry [All patients underwent pulmonary function test are received bronchial dilation test if the based predicted value of forced expiratory volume in one second (FEV1) <70%]...
March 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28285693/high-risk-community-and-primary-care-providers-knowledge-about-and-barriers-to-low-dose-computed-topography-lung-cancer-screening
#16
Vani N Simmons, Jhanelle E Gray, Matthew B Schabath, Lauren E Wilson, Gwendolyn P Quinn
INTRODUCTION: Until recently, there has not been a valid and reliable screening test for lung cancer. As compared to chest X-ray, low-dose computed tomography (LDCT) lung cancer screening has demonstrated greater sensitivity resulting in lung cancer diagnosis at an earlier stage, thereby reducing lung cancer mortality among high-risk individuals by 20%. In the current study, we sought to examine knowledge and attitudes about LDCT screening for lung cancer among an ethnically and racially diverse sample of high risk (HR) community members and primary care providers (PCP)...
April 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28284200/detection-in-blood-of-autoantibodies-to-tumour-antigens-as-a-case-finding-method-in-lung-cancer-using-the-earlycdt%C3%A2-lung-test-ecls-study-protocol-for-a-randomized-controlled-trial
#17
F M Sullivan, Eoghan Farmer, Frances S Mair, Shaun Treweek, Denise Kendrick, Cathy Jackson, Chris Robertson, Andrew Briggs, Colin McCowan, Laura Bedford, Ben Young, Kavita Vedhara, Stephanie Gallant, Roberta Littleford, John Robertson, Herb Sewell, Alistair Dorward, Joseph Sarvesvaran, Stuart Schembri
BACKGROUND: Lung cancer is the most common cause of cancer related death worldwide. The majority of cases are detected at a late stage when prognosis is poor. The EarlyCDT®-Lung Test detects autoantibodies to abnormal cell surface proteins in the earliest stages of the disease which may allow tumour detection at an earlier stage thus altering prognosis. The primary research question is: Does using the EarlyCDT®-Lung Test to identify those at high risk of lung cancer, followed by X-ray and computed tomography (CT) scanning, reduce the incidence of patients with late-stage lung cancer (III & IV) or unclassified presentation (U) at diagnosis, compared to standard practice? METHODS: A randomised controlled trial of 12 000 participants in areas of Scotland targeting general practices serving patients in the most deprived quintile of the Scottish Index of Multiple Deprivation...
March 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28270278/effect-of-third-generation-dual-source-ct-technology-on-image-quality-of-low-dose-chest-ct
#18
Xin Sui, Xiaoli Xu, Lan Song, Qianni DU, Xiao Wang, Zhengyu Jing, Wei Song
Objective To evaluate the image quality and radiation dose of third-generation dual-source CT with tin filtration for spectral shaping and iterative reconstructions.Methods Thirty-five patients underwent low-dose CT (LDCT) for lung cancer screening on second-generation dual-source CT and follow-ups on third-generation dual-source CT. Image quality and radiation dose were compared between the two examinations.ResultsThe radiation dose of third-generation dual-source CT [dose-length product (DLP)(49.7±18.2)mGy·cm, effective dose (ED)(0...
February 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28267354/body-size-specific-organ-and-effective-doses-of-chest-ct-screening-examinations-of-the-national-lung-screening-trial
#19
Choonsik Lee, Michael J Flynn, Phillip F Judy, Dianna D Cody, Wesley E Bolch, Randell L Kruger
OBJECTIVE: We calculated body size-specific organ and effective doses for 23,734 participants in the National Lung Screening Trial (NLST) using a CT dose calculator. MATERIALS AND METHODS: We collected participant-specific technical parameters of 23,734 participants who underwent CT in the clinical trial. For each participant, we calculated two sets of organ doses using two methods. First, we computed body size-specific organ and effective doses using the National Cancer Institute CT (NCICT) dosimetry program, which is based on dose coefficients derived from a library of body size-dependent adult male and female computational phantoms...
May 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28259326/extrapulmonary-findings-and-malignancies-in-participants-screened-with-chest-ct-in-the-national-lung-screening-trial
#20
Xuan V Nguyen, Louise Davies, James D Eastwood, Jenny K Hoang
PURPOSE: The aim of this study was to measure the prevalence of clinically significant extrapulmonary findings on chest CT for lung cancer screening in the National Lung Screening Trial (NLST). METHODS: Prospectively acquired data on 17,309 participants who underwent low-dose screening chest CT from August 2002 through September 2007 during the NLST were retrospectively analyzed for extrapulmonary findings. NLST radiologist readers coded such findings as "minor" or "potentially significant...
March 2017: Journal of the American College of Radiology: JACR
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