introduction: according  to  the  latest  statistical  and  epidemiological  studies,  copd  will  become  the  fourth  leading  cause  of  death  in  2030  worldwide.  scientists  are  studying  on  methods  to  diagnose  copd  in  the  patients  in  early  stages,  because  it  is  a  curable  and  preventable  disease  in  early  stages.  in  this  study,  evidences  of  hyperinflation  on  ...

intractable asthma is a challenging clinical problem. this study was conducted to determine whether a subset of patients with intractable asthma may be misdiagnosed and have a form of bronchiolitis instead and also to determine the effectiveness of macrolide therapy in these patients. seventy six patients with intractable asthma were re-treated with recommended maximal doses of oral prednisolon...

background: congenital lobar emphysema, also called infantile lobar emphysema, is a respiratory disease that occurs in infants when air enters the lungs and cannot leave easily. it results from cartilage deficiency and bronchomalacia causing distal air trapping and respiratory distress. in this study, we present a case of endobronchial polyp mimicking congenital lobar emphysema. case presentati...

RATIONALE Mustard gas primarily affects the eyes, skin, and particularly the respiratory tract. Tracheobronchomalacia (TBM) and air trapping are often observed in high-resolution computerized tomography (HRCT) scans of the chest of mustard gas-exposed patients. OBJECTIVES To examine the frequency and severity of TBM in a group of Iranian wartime mustard gas-exposed victims, and to investigate...

PURPOSE To compare thin-section computed tomographic (CT) scans obtained during suspended end expiration with helical CT scans obtained during continuous expiration for the assessment of air trapping. MATERIALS AND METHODS Forty-nine patients with an airway disease were examined with suspended-end-expiration CT after a 6-8-second expiratory maneuver, which was followed with continuous-expirat...

OBJECTIVE To investigate the diagnostic value of different patient positions during expiratory low-dose thin-layer multidetector computed tomography (MDCT) for detecting air trapping after allogeneic hematopoietic stem cell transplantation (allo-HSCT). PATIENTS AND METHODS Expiratory lung MDCT scanning was done for 51 post-allo-HSCT patients in both the supine and prone positions to determine...

PURPOSE We aimed to study the association between lung function decline and quantitative computed tomography (CT) air trapping. MATERIALS AND METHODS Current and former heavy smokers in a lung cancer screening trial underwent volumetric low-dose CT in inspiration and expiration. Spirometry was obtained at baseline and after 3 years. The expiratory to inspiratory ratio of mean lung density (E/...

introduction: data on imaging findings in pulmonary complications of chemical agents is scarce. the current study aimed to evaluate radiological findings of late onset pulmonary complications in chemical warfare victims (cwv) and to guide pulmonologists in diagnosis of these subjects.   materials and methods: ninety- three male cwv were enrolled in this prospective study, 20-25 years (mean=23) ...

Introduction: According  to  the  latest  statistical  and  epidemiological  studies,  COPD  will  become  the  fourth  leading  cause  of  death  in  2030  worldwide.  Scientists  are  studying  on  methods  to  diagnose  COPD  in  the  patients  in  early  stages,  because  it  is  a  curable  and  preventable  disease  in  early  stages.  In  this  study,  evidences  of  hyperinflation  on  ...

background chronic obstructive pulmonary disease (copd) is a devastating disease.while there is no cure for copd and the lung damage associated with this disease cannot be reversed, it is still very important to diagnose it as early as possible. objectives in this paper, we propose a novel method based on the measurement of air trapping in the lungs from ct images to detect copd and to evaluate...