Establishing Normal Reference Values in Quantitative Computed Tomography of Emphysema
نویسندگان
چکیده
منابع مشابه
Role of computed tomography in quantitative assessment of emphysema
Pulmonary emphysema, together with chronic bronchitis is a part of chronic obstructive pulmonary disease (COPD), which is one of the leading causes of death in the United States and worldwide. There are many methods to diagnose emphysema. Unfortunately many of them, for example pulmonary function tests (PFTs), clinical signs and conventional radiology are able to detect emphysema usually in its...
متن کاملPanlobular Emphysema: Enhancing Visibility with Quantitative Computed Tomography.
Rationale: Several chronic obstructive pulmonary disease (COPD) studies have evaluated risk factors for emergency department (ED) visits or hospitalizations, and found insufficient data available about social and demographic factors that drive these behaviors. This U.S. study was designed to describe the characteristics of COPD patients with ED visits or a hospitalization and to investigate how...
متن کاملReference Values for Normal Pulmonary Artery Dimensions by Noncontrast Cardiac Computed Tomography
Background—Main pulmonary artery diameter (mPA) and ratio of mPA to ascending aorta diameter (ratio PA) derived from chest CT are commonly reported in clinical practice. We determined the ageand sex-specific distribution and normal reference values for mPA and ratio PA by CT in an asymptomatic community-based population. Methods and Results—In 3171 men and women (mean age, 51 10 years; 51% men)...
متن کاملReference values for normal pulmonary artery dimensions by noncontrast cardiac computed tomography: the Framingham Heart Study.
BACKGROUND Main pulmonary artery diameter (mPA) and ratio of mPA to ascending aorta diameter (ratio PA) derived from chest CT are commonly reported in clinical practice. We determined the age- and sex-specific distribution and normal reference values for mPA and ratio PA by CT in an asymptomatic community-based population. METHODS AND RESULTS In 3171 men and women (mean age, 51±10 years; 51% ...
متن کاملValidation of computed tomography-based attenuation correction of deviation between theoretical and actual values for four computed tomography scanners
Objective: In this study, we aimed to validate the accuracy of computed tomography-based attenuation correction (CTAC) using the bilinear scaling method.Methods: The measured attenuation coefficient (μm) was compared to a theoretical attenuation coefficient (μt ) using four different CT scanners and an RMI 467 phantom. The effective energy of the CT beam X-rays was calculated, using the aluminu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Thoracic Imaging
سال: 2013
ISSN: 0883-5993
DOI: 10.1097/rti.0b013e3182a0d805