Advances in CT III: 3rd European Scientific User Conference by J. Regn, J. Ezrielev, R. Hupke, W. A. Kalender, K. Maatsch

By J. Regn, J. Ezrielev, R. Hupke, W. A. Kalender, K. Maatsch (auth.), Professor Dr. H. Pokieser, Professor Dr. G. Lechner (eds.)

In approximately all parts of expertise our new release is experiencing the phenomena of fast-paced innovation and nice bursts in improvement. along with the thoroughly new innovations, the "experienced consumer" is astonished whilst evidently strong and appar­ ently matured expertise comparable to the subsequent to final new release of CT apparatus undergoes extra improvement, similar to is the case with the spiral CT process. the big power of spiral CT abruptly grew to become obvious, stimulating and giving upward thrust to quite a lot of examine on its scientific software. over again we will see within the box of imaging how nice advances in a single approach competitively impact the variety of program in one other. for this reason this can be very necessary and essential to appraise the present state of affairs now. either physicians - who use the gear - and the wellbeing and fitness approach and with this the sufferer - which funds it - have the duty and the ideal to everlasting optimization of the appliance concepts of diagnostic strategies. now not least, this symposium additionally intended to slot the hot voice of spiral CT harmo­ niously into the symphonic rating of diagnostic strategies. the big radiodiagno­ stic division ofthe collage clinics which has been validated on the Neues All­ gemeines Krankenhaus in Vienna, Austria, is proud to have together prepared this person symposium with Siemens.

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Extra info for Advances in CT III: 3rd European Scientific User Conference SOMATOM PLUS Vienna, April 1994

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Otherwise, in cases of thrombosed aneurysms without marginally calcifications MIP has not the correct discernibility of grey values (HU) to show the aneurysm itself (Fig. 4). Spatial resolution of DSA is superior, but CT angiography offers a rapid examination with lower radiation dose [8], without any arterial punction and gives an excellent anatomical overview with correct distances to renal and superior mesenteric arteries. As a 3-D display shaded surface rendering is available. In connection with a predetermined threshold pictures result in clear imagination of vessel morphology.

In 5 % of all patients, the right hepatic artery originates from the superior mesenteric artery. 50 M. Oldendorf et al. a b Fig. 1 a, b. Infrarenal aortic aneurysm in a 77-year-old patient. Thrombosed wall; no dissection; no renal artery involvement Digital spiral CT Angiography of the Aorta and Its Main Branches 51 Fig. 2. Renal artery stenosis in small left kidney. Implantation of Y-prosthesis after occlusion of distal aorta in a 59-year-old woman a b Fig. 3 a, b. Stent implantation right renal artery after percutaneous transluminal angioplasty for stenosis in known diabetic nephropatia in left kidney of a 46-year-old woman 52 M.

K. DIXON, IH. A. D. FLOWER Introduction The first reports of the use of computed tomography (CT) for the diagnosis of aortic dissection were announced in the early 1980s. A milestone paper at that time was by Thorsen et al. (1983) who reported excellent results using a technique which evaluated the aorta during a bolus enhanced sequence of images obtained at three separate anatomical levels. However, data acquisition times were then in the region of 5 s and were limited by an inherent 5 s interscan delay in order to allow tube cooling.

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