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https://www.readbyqxmd.com/read/28333649/multi-scale-rotation-invariant-convolutional-neural-networks-for-lung-texture-classification
#1
Qiangchang Wang, Yuanjie Zheng, Gongping Yang, Weidong Jin, Xinjian Chen, Yilong Yin
We propose a new Multi-scale Rotation-invariant Convolutional Neural Network (MRCNN) model for classifying various lung tissue types on high-resolution computed tomography (HRCT). MRCNN employs Gabor-local binary pattern (Gabor-LBP) which introduces a good property in image analysis - invariance to image scales and rotations. In addition, we offer an approach to deal with the problems caused by imbalanced number of samples between different classes in most of the existing works, accomplished by changing the overlapping size between the adjacent patches...
March 21, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28331824/volume-versus-diameter-assessment-of-small-pulmonary-nodules-in-ct-lung-cancer-screening
#2
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/28331820/correlation-in-histological-subtypes-with-high-resolution-computed-tomography-signatures-of-early-stage-lung-adenocarcinoma
#3
Yingying Miao, Jianya Zhang, Jiawei Zou, Qingqing Zhu, Tangfeng Lv, Yong Song
BACKGROUND: Uncertainty remains on the association between image characteristics of the nodules in computed tomography (CT) scans and lung adenocarcinoma histopathologic subtypes. We aimed to estimate the correlation between preoperative high resolution computed tomography (HRCT) scan and postoperative histopathology of stage IA lung adenocarcinoma in East Asian Chinese population. METHODS: We retrospectively reviewed the clinical records and HRCT images of 190 patients (106 female and 84 male) with resected, preoperatively untreated stage IA adenocarcinomas...
February 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28326177/characterization-of-secondary-care-for-copd-in-sweden
#4
Josefin Sundh, Christer Janson, Gunnar Johansson, Anders Lindén, Claes-Göran Löfdahl, Thomas Sandström, Kjell Larsson
Introduction: Only a selected proportion of chronic obstructive pulmonary disease (COPD) patients are managed in secondary care. The aim of this study was to characterize disease severity, treatment and structure of secondary care for COPD in Sweden. Methods: Information was collected from 29 of 33 existing secondary care units of respiratory medicine in Sweden, using both individual data from 373 consecutively enrolled COPD patients with Global initiative on Obstructive Lung Disease (GOLD) stage III-IV and a structural questionnaire about available resources at the units...
2017: European Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28326174/copd-stage-and-treatment-in-a-large-outpatient-clinic
#5
Claire Præst Holm, Jakob Holm, Annette Nørgaard, Nina Godtfredsen
Some COPD patients suffer from frequent exacerbations despite triple inhalation treatment. These frequent exacerbators should be identified, as exacerbations often lead to decreasing lung function and increasing mortality. Roflumilast reduces exacerbations in patients with a previous history of exacerbations. Our aim was to describe COPD patient characteristics and compare roflumilast treatment eligible to non-eligible patients. An observational cross-section study was conducted. Patients were included from a large COPD outpatient clinic...
2017: European Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28325447/statistical-tools-for-the-temporal-analysis-and-classification-of-lung-lesions
#6
Stelmo Magalhães Barros Netto, Aristófanes Corrêa Silva, Hélio Lopes, Anselmo Cardoso de Paiva, Rodolfo Acatauassú Nunes, Marcelo Gattass
BACKGROUND AND OBJECTIVE: Lung cancer remains one of the most common cancers globally. Temporal evaluation is an important tool for analyzing the malignant behavior of lesions during treatment, or of indeterminate lesions that may be benign. This work proposes a methodology for the analysis, quantification, and visualization of small (local) and large (global) changes in lung lesions. In addition, we extract textural features for the classification of lesions as benign or malignant. METHODS: We employ the statistical concept of uncertainty to associate each voxel of a lesion to a probability that changes occur in the lesion over time...
April 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28325055/-experience-with-hepatoblastoma-treatment-in-small-children-the-use-of-preoperative-3d-virtual-analysis-mevis-for-liver-resections
#7
J Janek, P Bician, P Kenderessy, P Kothaj, K Novotná, J Koňarčík, Ľ Laca, J Ulianko, I Dedinská
INTRODUCTION: Hepatoblastoma is an uncommon but most frequent liver cancer in infants and children. The therapy is complex, including neoadjuvant, surgical, and adjuvant therapy. For surgery, the presence of a specialized surgeon and an anaesthesiologist is required. For planning the surgery, the 3D analysis MeVis is currently available. The objective of the work is the assessment of a group of children operated for a liver hepatoblastoma and the assessment of contribution of a pre-surgery virtual 3D analysis MeVis for a surgeon...
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/28324938/application-of-semi-supervised-deep-learning-to-lung-sound-analysis
#8
Daniel Chamberlain, Rahul Kodgule, Daniela Ganelin, Vivek Miglani, Richard Ribon Fletcher
The analysis of lung sounds, collected through auscultation, is a fundamental component of pulmonary disease diagnostics for primary care and general patient monitoring for telemedicine. Despite advances in computation and algorithms, the goal of automated lung sound identification and classification has remained elusive. Over the past 40 years, published work in this field has demonstrated only limited success in identifying lung sounds, with most published studies using only a small numbers of patients (typically N<;20) and usually limited to a single type of lung sound...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28320089/mir-448-is-a-novel-prognostic-factor-of-lung-squamous-cell-carcinoma-and-regulates-cells-growth-and-metastasis-by-targeting-dclk1
#9
Changting Shan, Fan Fei, Fengzhu Li, Bo Zhuang, Yulong Zheng, Yufeng Wan, Jianhui Chen
MicroRNA-448 (miR-448) has been showed to be low-expressed and function as tumor suppressor in most human cancers. However, there are limited reports on the clinical significance and biological function of miR-448 in lung squamous cell carcinoma. In this study, we observed that miR-448 expression was decreased in lung squamous cell carcinoma tissues and cell lines. Meanwhile, miR-448 expression associated with differentiated degree, T classification (tumor size), N classification (lymph node metastasis), M classification (distant metastasis), clinical stage and prognosis of lung squamous cell carcinoma patients...
March 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28319545/systemic-lupus-erythematosus-is-associated-with-increased-adverse-postoperative-renal-outcomes-and-mortality-a-historical-cohort-study-using-administrative-health-data
#10
Rovnat Babazade, Huseyin Oguz Yilmaz, Steve M Leung, Nicole M Zimmerman, Alparslan Turan
BACKGROUND: Systemic lupus erythematosus (SLE) is a common autoimmune connective tissue disease that mainly harms kidneys, heart, lungs, and nervous system. Effects of surgical stimulus and anesthesia combined with SLE-related pathologies may increase morbidity and mortality. Therefore, we aimed to evaluate the association between SLE (versus none) and postoperative renal, cardiac, and in-hospital mortality complications among patients undergoing major surgeries. METHODS: We obtained censuses of 2009 to 2011 inpatient hospital discharges across 7 states and conducted a retrospective cohort study by using International Classification of Diseases and Injuries, Version 9, diagnosis codes, procedure codes, and present-on-admission indicators...
April 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28318886/airway-inflammation-phenotype-prediction-in-asthma-patients-using-lung-sound-analysis-with-fractional-exhaled-nitric-oxide
#11
Terufumi Shimoda, Yasushi Obase, Yukio Nagasaka, Hiroshi Nakano, Reiko Kishikawa, Tomoaki Iwanaga
BACKGROUND: We previously reported the results of lung sound analysis in patients with bronchial asthma and demonstrated that the exhalation-to-inhalation sound pressure ratio in the low frequency range between 100 and 200 Hz (E/I LF) was correlated with the presence of airway inflammation and airway obstruction. We classified asthma patients by airway inflammation phenotype using the induced sputum eosinophil and neutrophil ratio and determined whether this phenotype could be predicted using E/I LF and fractional exhaled nitric oxide values...
March 16, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28317589/log-odds-of-positive-lymph-nodes-as-a-novel-prognostic-indicator-in-nsclc-staging
#12
Dariusz Dziedzic, Rudzinski Piotr, Renata Langfort, Tadeusz Orlowski
OBJECTIVES: The paper aimed to compare the efficacy of log odds (LODDS) compared to a classification based on the distribution of involved lymph nodes (pN) and lymph node ratio (LNR). METHODS: Material was collected retrospectively from an online survey-based database of the Polish Lung Cancer Group and included a group of 17,369 patients who received radical surgical treatment (R0) due to lung cancer. RESULTS: In the whole group the median survival for N0, N1 and N2 was 76...
March 2017: Surgical Oncology
https://www.readbyqxmd.com/read/28316156/-risk-factors-of-pulmonary-embolism-in-senile-and-non-senile-inpatients-and-the-predictive-value-of-caprini-risk-assessment-model-in-these-two-populations
#13
Y Chen, H X Zhou, Y H Hu, T X Cong, Y J Tang, L Wang, M Y Wang, Q Yi, Z A Liang
Objective: To investigate the risk factors of pulmonary embolism (PE) in senile and non-senile inpatients, and evaluate the predictive value of Caprini risk assessment model in these two populations. Methods: Case control study design was used in this study. All the PE patients diagnosed in West China Hospital of Sichuan University between January 2012 and December 2014 was included and divided into senile PE group (age ≥65 years old) and non-senile PE group (age <65 years old). Age matched controls (senile control group and non-senile control group) were selected from the patients admitted into the same departments during the same time period as PE patients, at a ratio of 2∶1...
March 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28306326/classification-of-airflow-limitation-based-on-z-score-underestimates-mortality-in-patients-with-chronic-obstructive-pulmonary-disease
#14
Elena Tejero, Eva Prats, Raquel Casitas, Raúl Galera, Paloma Pardo, Adelaida Gavilán, Elisabet Martínez-Cerón, Carolina Cubillos-Zapata, Luis Del Peso, Francisco García-Río
RATIONALE: Global Lung Function Initiative recommends reporting lung function measures as z-score, and a classification of airflow limitation (AL) based on this parameter has recently been proposed. OBJECTIVE: To evaluate the prognostic capacity of the AL classifications based on z-score or percentage predicted in patients with chronic obstructive pulmonary disease (COPD). METHODS: A cohort of 2614 COPD patients recruited outside the hospital setting was examined after 57±13 months of follow-up, totalling 10,322 person-years...
March 17, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28302502/clinical-relevance-of-the-international-society-for-heart-and-lung-transplantation-consensus-classification-of-primary-graft-dysfunction-after-heart-transplantation-epidemiology-risk-factors-and-outcomes
#15
Mario Sabatino, Giuseppe Vitale, Valentina Manfredini, Marco Masetti, Laura Borgese, Giuseppe Maria Raffa, Antonio Loforte, Sofia Martin Suarez, Calogero Falletta, Giuseppe Marinelli, Francesco Clemenza, Francesco Grigioni, Luciano Potena
BACKGROUND: Primary graft dysfunction (P-GD) is the leading cause of early mortality after heart transplantation (HT). In this 2-center study we analyze outcomes and risk factors of P-GD according to the recent consensus conference classification endorsed by International Society for Heart and Lung Transplantation. METHODS: We included all adult HTs performed between 1999 and 2013. P-GD was graded as mild, moderate, and severe, according to International Society for Heart and Lung Transplantation recommendations, and analyzed separately from secondary GD...
February 17, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28302220/-relationships-between-serum-albumin-and-urea-level-and-the-clinical-pathological-characteristics-and-survival-time-in-patients-with-lung-cancer
#16
Yalun Li, Lei Li, Li Zhang, Weimin Li
BACKGROUND: Lung cancer is the most common malignancy and is the leading cause of cancer-related death worldwide. Thus, this disease severely threatens human health. This study aims to identify the relationships between serum albumin and urea level and the clinical pathological characteristics and survival time in patients with lung cancer. METHODS: A total of 1,098 patients with lung cancer were diagnosed by pathology and tested the serum albumin and urea level in West China Hospital of Sichuan University during January 2008 to December 2013...
March 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28301069/expression-of-akr1b10-as-an-independent-marker-for-poor-prognosis-in-human-oral-squamous-cell-carcinoma
#17
Hui-Hsin Ko, Shih-Lung Cheng, Jang-Jaer Lee, Hsin-Ming Chen, Mark Yen-Ping Kuo, Shih-Jung Cheng
BACKGROUND: Aldo-keto reductase family 1 member B10 (AKR1B10) is implicated in xenobiotic detoxification and has disparate functions in tumorigenesis that are dependent on the cell types. The purpose of this study was to investigate the clinicopathological significance of AKR1B10 as a prognostic marker for oral squamous cell carcinomas (OSCCs). METHODS: AKR1B10 protein expression was analyzed by immunohistochemistry in 77 patients with OSCC. RESULTS: The AKR1B10 labeling score for OSCCs (1...
March 16, 2017: Head & Neck
https://www.readbyqxmd.com/read/28300524/predicting-pulmonary-function-from-phone-sensors
#18
Qian Cheng, Joshua Juen, Shashi Bellam, Nicholas Fulara, Deanna Close, Jonathan C Silverstein, Bruce Schatz
INTRODUCTION: Smartphones are ubiquitous, but it is unknown what physiological functions can be monitored at clinical quality. Pulmonary function is a standard measure of health status for cardiopulmonary patients. We have shown phone sensors can accurately measure walking patterns. Here we show that improved classification models can accurately predict pulmonary function, with sole inputs being motion sensors from carried phones. SUBJECTS AND METHODS: Twenty-five cardiopulmonary patients performed 6-minute walk tests in pulmonary rehabilitation at a regional hospital...
March 16, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/28299198/non-small-cell-lung-cancer-the-new-t1-categories
#19
REVIEW
Paul E Van Schil
Recently, major changes have occurred in the staging, diagnosis, and treatment of early stage lung cancer. By screening high-risk populations, we are now able to detect lung cancers at an early stage, but the false-positive rate is high. A new pathological classification was published in 2011 and fully incorporated in the 2015 World Health Organisation (WHO) Classification of Tumours of the Lung, Pleura, Thymus, and Heart. The new eighth edition of the tumour-node-metastasis (TNM) staging system has been fully published and will be in use from January 2017...
2017: F1000Research
https://www.readbyqxmd.com/read/28298628/the-size-of-spontaneous-pneumothorax-is-a-predictor-of-unsuccessful-catheter-drainage
#20
Tung-Ming Tsai, Mong-Wei Lin, Yao-Jen Li, Chin-Hao Chang, Hsien-Chi Liao, Chao-Yu Liu, Hsao-Hsun Hsu, Jin-Shing Chen
Small-bore thoracic catheter drainage is recommended for a first large or symptomatic episode of primary spontaneous pneumothorax (PSP). However, one-third of these patients require a second procedure because of treatment failure. We investigated the factors associated with unsuccessful pigtail catheter drainage in the management of PSP. In this retrospective study, using a prospectively collected database, we enrolled 253 consecutive patients with PSP who underwent pigtail catheter drainage as initial treatment, from December 2006 to June 2011...
March 15, 2017: Scientific Reports
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