Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes
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Randomized Controlled Trial Comparative Study Clinical Trial
A prospective randomized clinical trial comparing two film-screen systems for chest radiography.
To compare conventional and asymmetric film-screen chest radiography systems in a prospective, randomized trial. ⋯ In general, the asymmetric system was superior for assessing mediastinal features and inferior for assessing the lateral subpleural zones in the posteroanterior radiographs. The asymmetric system was superior for assessing retrosternal lung markings and inferior for assessing fissures in the lateral radiographs. The results for the posteroanterior radiographs were consistent with the results of nonblinded studies reported elsewhere.
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To determine the long-term clinical and radiographic outcome of patients who undergo insertion of a Gianturco-Roehm Bird's Nest vena caval filter (Cook Inc., Bloomington, Ind.). ⋯ In this small group of patients the Bird's Nest filter was effective in preventing recurrent pulmonary embolism and caused less caval thrombosis than has previously been suspected, although intrafilter clot was found in 25% of the patients who underwent follow-up imaging. Colour Doppler imaging is the method of choice for detecting nonocclusive thrombus with this type of filter. Perforation of the caval wall was universal but not clinically symptomatic. Finally, guidelines should be established to ensure the cost-effective use of inferior vena caval filters in ICU patients.
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The authors present a case of aortic arch interruption in an adult, an anomaly that was discovered coincidentally during angiography for ruptured cerebral aneurysm. The presentation in adulthood with rupture of the aneurysm and the successful surgical treatment of both abnormalities are unusual.
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The authors report a case of tracheobronchomegaly in a 62-year-old man with chronic expiratory cough. Computed tomography showed dilatation of the trachea on inspiration and complete collapse of the trachea and the proximal bronchi on full expiration. The authors discuss the importance of the collapse on expiration as the cause of the patient's symptoms.