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OBJECTIVE This study assesses intravascular density produced by ionic and nonionic contrast material and its effect on visualization of stenoses by CT angiography. MATERIALS AND METHODS CT angiography was performed using a 32-vessel phantom to study grades of luminal stenoses (0-100%), three lengths of stenoses (1, 3, and 5 mm), and two angles of(More)
A method of power injection of contrast material pushed with injectable saline solution during thoracic computed tomography (CT) was evaluated in 75 patients to help decrease the amount of contrast material necessary. Patients received 50-125 mL of 60% nonionic contrast material alone or pushed with 50 mL of saline. A volume of 75 mL of contrast material(More)
BACKGROUND Informed consent forms are universally used by hospitals throughout the United States before surgery or invasive procedures. This survey was undertaken to determine the content of these forms and their ability to be understood by individuals with differing reading comprehension levels. METHODS Ten percent of all U.S. hospitals were requested to(More)
The objective of this study was to test whether extended 1.5 pitch helical computed tomography (CT) can be used for routine thoracic CT without a significant loss of clinical scan quality. Thirty consecutive patients presenting for contrast thoracic CT were computer randomized into one of three groups: conventional, 1.0 pitch helical, and 1.5 pitch helical.(More)
Wireless devices are pervasive in everyday life from mobile phones to millimetre precision locating systems (GPS). Wireless technology is advancing at speed and the opportunities for use in the intelligent transport field are immeasurable and include areas such as road user charging, congestion control and fleet management. The opportunity to harness the(More)
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