Chronic dyspnea of pulmonary origin raises concern for chronic obstructive pulmonary disease or interstitial lung disease. A chest radiograph is recommended as the initial imaging study. When chest radiography is nonrevealing or provides no definitive diagnosis, a high-resolution chest computed tomography is indicated. The high-resolution chest computed tomography should include expiratory imag...

conclusions the automatic bolus-tracking method, results in higher contrast enhancement of the aorta and spleen at the portal phase, but has no effect on liver enhancement. however, bolus tracking is associated with reduced variability for liver enhancement among different patients. results forty-eight patients (23 male, 25 female, mean age=56.4±13.5 years) were included. the contrast enhanceme...

The hantavirus pulmonary syndrome (HPS) is an acute, rapidly progressive disease transmitted by rodent excreta, with endothelial damage playing a central role in the pathophysiology. It usually affects rural workers. The lung itself is the target organ and reflects all the patterns of endothelial involvement of this disease. The radiologic findings of HPS are vast and range from a mild intersti...

A 73-year-old woman was hospitalized for the treatment of anaplastic large-cell lymphoma. She complained of itchiness with a rash on her trunk and was diagnosed with chickenpox. Although she had no respiratory symptoms, chest high-resolution computed tomography (HRCT) performed on the same day showed multiple nodules with surrounding ground-glass attenuation (GGA) and consolidation (Picture). B...

An important part of any computed tomography (CT) system is the reconstruction method, which transforms the measured data into images. Reconstruction methods for CT can be either analytical or iterative. The analytical methods can be exact, by exact projector inversion, or non-exact based on Back projection (BP). The BP methods are attractive because of thier simplicity and low computational co...

Background: This study assessed the optimal timing of computed tomography for detection of metastatic disease in locoregional lymph nodes in patients with rectal cancer who have undergone chemoradiotherapy. Materials and Methods: This observational retrospective study was performed in a single institution. All patients with locally advanced rectal cancer treated with chemoradiotherapy, followed...

1. Assistant Professor of Radiology at the Universidade Federal Fluminense (UFF), Niterói, RJ, Radiologist and Medical Coordinator at Dimagem – Diagnóstico por Imagem, Nova Iguaçu, RJ, Brazil. E-mail: [email protected]. Despite the high incidence and lethality of hantavirus pulmonary syndrome (HPS), there is limited information in the literature about the high-resolution computed tomogra...