CT-based Visual Classification of Emphysema: Association with Mortality in the COPDGene Study.

Purpose To determine whether visually assessed patterns of emphysema at CT might provide a simple assessment of mortality risk among cigarette smokers. Materials and Methods Of the first 4000 cigarette smokers consecutively enrolled between 2007 and 2011 in this COPDGene study, 3171 had data available for both visual emphysema CT scores and survival. Each CT scan was retrospectively visually scored by two analysts using the Fleischner Society classification system.

Visual Assessment of Chest Computed Tomographic Images Is Independently Useful for Genetic Association Analysis in Studies of Chronic Obstructive Pulmonary Disease.

Rationale: Automated analysis of computed tomographic (CT) lung images for epidemiologic and genetic association studies is increasingly common, but little is known about the utility of visual versus semiautomated emphysema and airway assessments for genetic association studies.

Objectives: Assess the relative utility of visual versus semiautomated emphysema and airway assessments for genetic association studies.

Methods: A standardized inspection protocol was used to visually assess chest CT images for 1,540 non-Hispanic white subjects within the COPDGene Study for the presence and severity of radiographic features representing airway wall thickness and emphysema.

Periimplant Breast Gas at High Altitudes: Prevalence, Significance, and Possible Associated Factors.

Objective: The objective of our study was to confirm the suspected incidental nature of periimplant gas and characterize possible predisposing factors.

Materials And Methods: Three hundred twenty-one chest CT examinations of patients with breast implants over a 2-year period were identified using a research database query. Scans were evaluated for the qualitative presence of gas, the implant type, and the presence of implant rupture, capsular calcifications, and axillary clips.

Selective common and uncommon imaging manifestations of blunt nonaortic chest trauma: when time is of the essence.

This is a pictorial essay in which we review and illustrate a variety of thoracic injuries related to blunt trauma. Non-aortic blunt thoracic trauma can be divided anatomically into injuries of the chest wall, lungs, pleura, mediastinum, and diaphragm. Some injuries involve more than one anatomic compartment, and multiple injuries commonly coexist.

Chronic obstructive pulmonary disease: lobe-based visual assessment of volumetric CT by Using standard images--comparison with quantitative CT and pulmonary function test in the COPDGene study.

Purpose: To provide a new detailed visual assessment scheme of computed tomography (CT) for chronic obstructive pulmonary disease (COPD) by using standard reference images and to compare this visual assessment method with quantitative CT and several physiologic parameters.

Materials And Methods: This research was approved by the institutional review board of each institution. CT images of 200 participants in the COPDGene study were evaluated.

Craniectomy for a bilobed dermoid cyst in the temporal fossa and greater wing of the sphenoid bone.

Dermoid cysts are common periorbital lesions. They usually occur near the superolateral orbital rim, indenting but not extending within the bony outer table. We present an unusual case of a dumbbell-shaped dermoid cyst underlying the temporalis muscle with extension into the lateral wing of the greater sphenoid bone, approaching the optic canal.