Background
The assessment of the extent of silicosis on chest radiographs is subjective and could be more standardized by using computed tomography (CT) quantification methods. We propose a semiautomatic method of quantifying the anatomical lung damage (LD) (the sum of the emphysema and large opacities volumes) measured by CT densitovolumetry in complicated silicosis.
Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease that is characterized by chronic airflow limitation. Unraveling of this heterogeneity is challenging but important, because it might enable more accurate diagnosis and treatment. Because spirometry cannot distinguish between the different contributing pathways of airflow limitation, and visual scoring is time-consuming and prone to observer variability, other techniques are sought to start this phenotyping process. Quantitat...
Background During the past 2 decades, silica sand has been used widely in sandblasting denim in Turkey, which has resulted in an epidemic of silicosis. This study was conducted to summarize the clinical outcomes of formerly healthy young people who became disabled or died because of working in the textile industry. Methods The medical records of patients with silicosis due to denim sandblasting who were seen at our institution between 2001 and 2009 were reviewed. Follow-up data were assessed. Co...
Objectives To evaluate the prevalence of HRCT findings in construction workers previously surveyed by chest radiographs classified according to ILO guidelines. To examine the association between HRCT findings and exposure to quartz containing dust, and lung function. Methods The study comprised a questionnaire, dynamic and static lung function measurements, single-breath CO diffusion capacity, chest radiographs and HRCT in 79 individuals. Certified ‘B’ readers coded radiographs according to the ...
OBJECTIVE: We wanted to compare the variability in the longitudinal emphysema index (EI) measurements that were computed with standard and high resolution (HR) reconstruction algorithms (RAs). MATERIALS AND METHODS: We performed a retrospective review of 475 patients who underwent CT for surveillance of lung nodules. From this cohort, 50 patients (28 male) were included in the study. For these patients, the baseline and follow-up scans were acquired on the same multidetector CT scanner and using...
#1Klaus Loureiro Irion(United Nations Industrial Development Organization)H-Index: 5
O sinergismo que existe entre a pneumologia e a radiologia e impar, e todos tem consciencia da interdependencia dessas duas especialidades medicas no diagnostico e no acompanhamento evolutivo de varias doencas pulmonares. O enfisema pulmonar e um dos exemplos de pneumopatias cujos dados de imagem, dados clinicos e dados laboratoriais devem ser utilizados em conjunto. O radiograma convencional de torax foi, por muitos anos, utilizado na investigacao de pacientes enfisematosos. Porem, o unico sina...
#2Klaus L. Irion(UFRJ: Federal University of Rio de Janeiro)H-Index: 27
Last. John A Holemans(Liverpool Heart and Chest Hospital NHS Trust)H-Index: 8
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Abstract: The objective of this study was to describe the use of CT volume quantification assessment of candidates for LLDLT. Six pediatric candidates for LDLLT and their donors were investigated with helical chest CT, as part of the preoperative assessment. The CT images were analyzed as per routine and additional post-processing with CT volume quantification (CT densitovolumetry) was performed to assess volume matching between the lower lobes of the donors and respective lungs of the receptors...
OBJECTIVE. The purpose of this prospective study was to evaluate volumetric CT emphysema quantification (CT densitovolumetry) in a young population with no recognizable lung disease.SUBJECTS AND METHODS. A cohort of 30 nonsmoking patients with no recognizable lung disease (16 men, 14 women; age range, 19–41 years) underwent inspiratory and expiratory CT, after which the data were postprocessed for volumetric quantification of emphysema (threshold, –950 HU). Correlation was tested for age, weight...
Last. Mario Mascalchi(UniFI: University of Florence)H-Index: 59
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We compared whole-lung densitometry with visual evaluation of pulmonary emphysema. Thirty patients with chronic obstructive pulmonary disease underwent multi-detector CT (150 mAs and 0.75 collimation) with double reconstruction: thick (5-mm) slices with smooth filter for whole-lung densitometry and thin (1 mm) slices with sharp filter for visual assessment (one of every ten slices). Densitometry and visual assessment were performed by three operators each, and the time required for assessment, t...
#2Roberto Mogami(UERJ: Rio de Janeiro State University)H-Index: 8
Last. José Manoel Jansen(UERJ: Rio de Janeiro State University)H-Index: 16
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OBJECTIVE: To correlate tomographic findings with pulmonary function findings, as well as to compare chest X-ray findings with high resolution computed tomography (HRCT) findings, in patients with silicosis. METHODS: A cross-sectional study was conducted in 44 non-smoking patients without a history of tuberculosis. Chest X-ray findings were classified according to the International Labour Organization recommendations. Using a semiquantitative system, the following HRCT findings were measured: th...
#2Yeon-Mok Oh(UOU: University of Ulsan)H-Index: 40
Last. Sang Do Lee(UOU: University of Ulsan)H-Index: 41
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The severity of chronic obstructive pulmonary disease (COPD) is evaluated not only by airflow limitation but also by factors such as exercise capacity and body mass index. Recent advances in CT technology suggest that it might be a useful tool for evaluating the severity of the disease components of COPD. The aim of this study is to evaluate the correlation between the parameters measured on volumetric CT, including the extent of emphysema, air trapping, and airway thickening, and clinical param...
AIM To evaluate the density and volume changes in the lungs of silicosis patients and their relationship with the disease severity classification of the International Labor Organization (ILO). MATERIALS AND METHODS The multidetector computed tomography (CT) images of 44 patients diagnosed with silicosis and 32 controls that underwent thoracic CT due to trauma were evaluated. Patients with silicosis were divided into three categories according to the ILO classification. Data related to the total ...
Last. Jeffrey P. Kanne(UW: University of Wisconsin-Madison)H-Index: 29
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Abstract Ordering the appropriate diagnostic imaging for occupational lung disease requires a firm understanding of the relationship between occupational exposure and expected lower respiratory track manifestation. Where particular inorganic dust exposures typically lead to nodular and interstitial lung disease, other occupational exposures may lead to isolated small airway obstruction. Certain workplace exposures, like asbestos, increase the risk of malignancy, but also produce pulmonary findin...
Silicosis in artificial stone workers has become increasingly recognised in Australia over the last two years, with a large proportion of screened workers showing imaging features of the disease. The spectrum of findings has differed from the classical silicosis previously described, with many features of accelerated disease, including ground-glass opacities and progressive massive fibrosis. This cohort of patients presents after exposure to a unique product high in silica and other binding agen...
#1Andreas Fischer(MUSC: Medical University of South Carolina)H-Index: 7
#2Akos Varga-Szemes(MUSC: Medical University of South Carolina)H-Index: 24
Last. U. Joseph Schoepf(MUSC: Medical University of South Carolina)H-Index: 79
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OBJECTIVE. The purpose of this study was to evaluate an artificial intelligence (AI)-based prototype algorithm for fully automated quantification of emphysema on chest CT compared with pulmonary fu...
Abstract Using magnetic resonance imaging (MRI), we diagnosed pneumoconiosis by identifying the content and distribution of hydrogen protons in the water molecules in different tissues and lesions. 25 cases of CWP patients with progressive massive fibrosis (PMF) lesions. Patients were correctly diagnosed, with one case each of Phase I and II pneumoconiosis and 23 cases of Phase III pneumoconiosis. None. Through MRI, 39 PMF pneumoconiosis lesions exhibited equal, low or equally low, and uneven si...
Abstract Particulates may experience dynamic compression loading during materials handling and processing, which in turn can lead to fracture of the particles. In this study, the dynamic fracture behavior of microspherical particles of soda lime glass (SLG), polycrystalline silica, polycrystalline silicon, barium titanate glass (BTG) and yttrium-stabilized zirconia (YSZ) was characterized with high speed, in situ X-ray phase-contrast imaging to examine the failure mechanisms in situ for spheroid...
Objective:To evaluate the correlations between pulmonary densitometry values and forced oscillation technique (FOT) parameters in patients with silicosis.Methods:This cross-sectional study comprised 36 non-smoker patients with silicosis and 20 matched control subjects who were submitted to FOT and multidetector CT (MDCT).Results:Compared with the control subjects, the MDCT evaluation demonstrated that patients with silicosis exhibited greater total lung mass. These patients also had larger non-a...
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