[The administration of intravenous contrast agents: extravasations].

Local extravasation of intravenous contrast material is a relatively common complication that radiologists need to know about. The risk of extravasation is greater in children, the elderly, and unconscious patients. Although most extravasations are mild and do not lead to further complications, some can result in severe lesions that require surgery, especially in cases that are associated with compartment syndrome.

[Silicosis: computed tomography findings].

Silicosis is an occupational lung disease, which is caused by the inhalation of silica and affects a wide range of jobs. There are many clinical forms of silicosis: acute silicosis, results from exposure to very large amounts of silica dust over a period of less than 2 years. Simple chronic silicosis, the most common type that we see today, results from exposure to low amounts of silica between 2 and 10 years.

[Dual energy CT angiography of the carotid arteries: quality, bone subtraction, and radiation dosage using tube voltage 80/140 kV versus 100/140 kV].

Objective: To study the differences in vascular image quality, bone subtraction, and dose of radiation of dual energy CT angiography of the supraaortic trunks using different tube voltages.

Material And Methods: We reviewed the CT angiograms of the supraaortic trunks in 46 patients acquired with a 128-slice dual source CT scanner using two voltage protocols (80/140 kV and 100/140 kV). The "head bone removal" tool was used for postprocessing.

[Oral versus intravenous beta-blockers for computed tomography coronary angiography? A randomized controlled trial].

Objectives: To determine whether the time employed in the radiological management of outpatients undergoing computed tomography (CT) coronary angiography varies in function of whether oral or intravenous beta-blockers are administered.

Material And Methods: This was a prospective, analytical, randomized controlled trial. A total of 40 patients with heart rates greater than 65 beats per minute were randomly assigned to one of two groups.