Wolfgang Wüst

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Low tube voltage allows for computed tomography (CT) imaging with increased iodine contrast at reduced radiation dose. We sought to evaluate the image quality and potential dose reduction using a combination of attenuation based tube current modulation (TCM) and automated tube voltage adaptation (TVA) between 100 and 120 kV in CT of the head and neck. One(More)
Transcatheter Aortic Valve Implantation (TAVI) is an alternative to surgical valve replacement in high risk patients. Angiography of the aortic root, aorta and iliac arteries is required to select suitable candidates, but contrast agents can be harmful due to impaired renal function. We evaluated ECG-triggered high-pitch spiral dual source Computed(More)
BACKGROUND AND PURPOSE CT is the imaging technique of choice in the evaluation of midface trauma or inflammatory disease. We performed a systematic evaluation of scan protocols to optimize image quality and radiation exposure on third-generation dual-source CT. MATERIALS AND METHODS CT protocols with different tube voltage (70-150 kV), current (25-300(More)
OBJECTIVES We sought to evaluate the image quality of iterative reconstruction in image space (IRIS) in half-dose (HD) datasets compared with full-dose (FD) and HD filtered back projection (FBP) reconstruction in abdominal computed tomography (CT). MATERIALS AND METHODS To acquire data with FD and HD simultaneously, contrast-enhanced abdominal CT was(More)
OBJECTIVE To evaluate the image quality and diagnostic accuracy of very low-dose computed tomography (CT) angiography (CTA) for the evaluation of coronary artery stenosis. BACKGROUND Iterative reconstruction (IR) has shown to substantially reduce image noise and hence permit the use of very low-dose data acquisition protocols in coronary CTA. METHODS(More)
PURPOSE According to echocardiography reports, Fabry cardiomyopathy not only affects the left ventricle (LV) but also the right ventricle (RV). Until now no MRI studies about the effect of enzyme replacement therapy (ERT) on the RV are available. We evaluated the effect of ERT on the RV. MATERIALS AND METHODS In this prospective trial 14 patients with(More)
Tumoren der Kopf-Hals-Region sind überwiegend Plattenepithelkarzinome, die der Speicheldrüsen Adenokarzinome, adenoid-zystische Karzinome oder Mukoepidermoidkarzinome. In der Bundesrepublik lag 2011 die Inzidenz von Tumoren der Mundhöhle und des Rachens bei 6839 (5026 Männer und 1813 Frauen), die von Tumoren des Kehlkopfs bei 1878 (1642 Männer und 236(More)
BACKGROUND AND PURPOSE CTA is considered the imaging modality of choice in evaluating the supraaortic vessels in many institutions, but radiation exposure remains a matter of concern. The objective of the study was to evaluate a fully automated, attenuation-based kilovolt selection algorithm in carotid CTA in respect to radiation dose and image quality(More)
Shaping the energy spectrum of the X-ray beam has been shown to be beneficial in low-dose CT. This study’s aim was to investigate dose and image quality of tin filtration at 100 kV for pre-operative planning in low-dose paranasal CT imaging in a large patient cohort. In a prospective trial, 129 patients were included. 64 patients were randomly assigned to(More)
Die unklaren Risiken der Strahlenbelastung durch die Computertomographie sind ein andauernder Anlass für Besorgnis, sowohl für medizinisches Personal als auch den Patienten. Gemäß dem Leitsatz „soviel wie nötig, aber so wenig wie möglich“ ist die Dosisreduktion zentrales Thema in klinischem Alltag, Forschung und Entwicklung. Das komplexe Zusammenspiel aus(More)