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OBJECTIVE The purpose of this study was to determine the efficacy of real-time sonography for the detection and estimation of the volume of pneumothorax using receiver operating characteristic (ROC) analysis in 27 patients evaluated by five radiologists using previously described sonographic findings. MATERIALS AND METHODS Bilateral chest sonograms were(More)
Extravasation of intravenously injected contrast medium is a well-known complication of radiologic procedures. Records from a 27-month period were reviewed of 28 patients in whom extravasation of nonionic contrast medium occurred during computed tomographic (CT) scanning. Extravasated amounts ranged from 3 mL in an infant to 100 mL in an adult. There were(More)
Although anatomic lesions and obesity can produce obstructive sleep apnea (OSA), most subjects with OSA have no recognizable anatomic lesion. We hypothesized that the occurrence of OSA is related to the size of the region enclosed by the mandible and the degree of obesity. We studied 30 subjects with a range of OSA and obesity with magnetic resonance(More)
Computed tomography (CT)-guided interventions such as biopsy, drainage, and ablation may be significant sources of radiation exposure in both patients and radiologists. Simple CT techniques to reduce radiation dose may be employed without increasing the procedure time or significantly degrading image quality. To develop low-dose protocols, it is important(More)
RATIONALE AND OBJECTIVES The authors' purpose was to evaluate radiology residents' assessment of their own computer skills for potential development of computer training in a residency curriculum. METHODS The authors conducted a survey to evaluate the attitudes of radiology residents concerning personal computing. Surveys were completed by 136 radiology(More)
Although most patients with obstructive sleep apnea (OSA) are obese, it is not known how obesity contributes to airway collapse during sleep. The purpose of this study was to determine whether the volume of adipose tissue adjacent to the pharyngeal airway in humans is related to the degree of OSA. We studied 30 subjects, nine without OSA and 21 with OSA;(More)
Given the magnitude of the problem of blunt abdominal trauma, we have the opportunity, through abdominal CT, of making a great impact on the health care of many patients. Through the efforts of early investigators and with continued refinements, great progress has been made in developing CT as an accurate, reliable emergency modality. With meticulous(More)
A 71-year-old man who underwent a coronary artery bypass using a saphenous vein bypass graft (SVG) in 1977 presented with a new mediastinal mass on chest radiography. A variety of imaging techniques were applied and magnetic resonance imaging (MRI) provided excellent anatomic detail of an aneurysm of the previously placed SVG. This condition was(More)
Multidetector computed tomography (CT) represents a significant advance in CT technology and can allow the accurate assessment of trauma patients, including the detection of traumatic retroperitoneal injuries, many of which are clinically occult. Retroperitoneal injuries include duodenal, pancreatic, vascular, renal, and adrenal injuries. Abnormal blood,(More)