By Walter Ameling (auth.), Jürgen Meyer MD, Peter Schweizer MD, Raimund Erbel MD (eds.)
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Extra info for Advances in Noninvasive Cardiology: Ultrasound, computed tomography, radioisotopes, digital angiography
By clockwise or counter-clockwise rotation of the probe at the level of the peripheral edge of the aortic cusps the origin of the right (Figure 4) or of the left (Figure 5) coronary artery can be identified. The left ventricular inflow and outflow tracts can be visualized by slightly advancing the gastroscope down the esophagus from the aortic root level and rotating counterclockwise (Figure 6). At lower esophageal levels the transducer allows visualization of the left ventricle at the level of the papillary muscles (Figure 7) or of the apical region.
B) Full size serial angiocardiography by film changers (single or biplane, high spatial, low temporal resolution). (c) Selective injection technique and percutaneous catheterization (right heart, left heart, coronary arteries). (d) Dynamic Cine- and Videoangiocardiography with high spatial- and temporal resolution image intensifiers. , Schweizer, P. and Erbel, R. ) Advances in noninvasive cardiology © 1983 Martinus Nijhoff Publishers, Boston. ISBN 978-94-009-6722-9. 52 QUANT ITATI VE VIDEO ANGIOCARDIOGRAPHY CONCEPTS AND REALIZATION FUNDAMENTALS KV I/'I'//It\ '" d:-t I~ I rW-+~tj VI DEODENSITOMETRY I»lJ ~Jy VIDEOMETRY ru TECHNICAL REQUIREMENTS FOR OUANTITATION X-RAY EQUIPM.
From a comparable number of projection images taken at different times one gets insight into a "new dimension" , namely "function" of the heart. To arrive at a clinically useful 3 0 dynamic reconstruction of the beating heart, a huge, almost utopic data rate has to be processed, which is the purpose and the aim of the Mayo Clinic dynamic spatial reconstructor [OSR 3, 9, 10, 14, 15]. The principle of direct, dynamic digital video-angiocardiographic (OOOVA) is 54 IMAGE SERIES DIG IT AL BUFFER o I G I T A l fHHJ VIDEOSIGNAI.
Advances in Noninvasive Cardiology: Ultrasound, computed tomography, radioisotopes, digital angiography by Walter Ameling (auth.), Jürgen Meyer MD, Peter Schweizer MD, Raimund Erbel MD (eds.)