RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
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Comparative Study
[Prospective observation of abdominal ultrasound in radiological emergency services: approaches to cost saving].
To analyze prospectively abdominal ultrasound in an emergency department (ED) with special emphasis on different routes of obtaining radiology service, reasons for consultation and ordering diagnosis, and to identify strategies for realizing cost savings. ⋯ In the ED, sonography was performed with significantly lower clinical effectiveness on self-referred than on physician-referred patients. Substantial cost-savings could be achieved by more selective use of abdominal sonography for self-referred patients.
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Comparative Study
[Contrast-enhanced MR angiography of the arterial and portovenous system of the liver with varying concentrations of contrast medium].
To evaluate the diagnostic value of a higher concentrated contrast medium (gadobutrol) for contrast-enhanced MRA of the hepatic arteries and portovenous system. ⋯ For MRA of the hepatic arteries and the portal veins, the higher concentrated Gd-DTPA contrast medium gadobutrol can be used at half the dosage recommended for the standard Gd-DTPA contrast medium.
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To introduce a new interventional method for CT-guided aortic balloon occlusion in patients with life-threatening abdominal or pelvic bleeding. ⋯ CT-guided aortic occlusion provides fast and effective bleeding control immediately after completion of the diagnostic CT. The procedure can be combined with other specific emergency surgical or interventional procedures. Experience with more patients is necessary for further evaluation of this new technique.
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We sought to evaluate the radiation exposure of cardiac CT scans with 16-row multidetector computed tomography (MDCT). Additionally the possibility of dose reduction by using a ECG-controlled tube current modulation technique was evaluated. ⋯ MDCT of the heart shows a significant radiation exposure, which can significantly be reduced by ECG-pulsed tube current modulation. Radiation exposure of cardiac MDCT is comparable to CT-examinations of chest or abdomen, but seem to be slightly higher compared to conventional coronary angiography.