Frontiers in European Radiology

Buch | Softcover

IV, 160 Seiten

2011 | 1. Softcover reprint of the original 1st ed. 1984
Springer Berlin (Verlag)
978-3-642-69719-7 (ISBN)

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The quantitative analysis of blood flow within central and peripheral blood vessels has attracted more and more interest, for with the rapid developments in vascular surgery and the introduction of percutaneous transluminal angioplasty, it is becom ing increasingly important to be able to measure regional blood flow in man. In clinical radiology, angiography has been used predominantly from the point of view of its morphological applications. However, theoretically angiography may also be regarded as a specific application of indicator-dilution measurements of blood flow. The indicator is contrast medium (CM), the changing concentration of which is re corded by cinematography or video-electronic systems at sites downstream from the point of injection. The curves of density thus obtained correspond to indicator-di lution curves. The blood flow can be calculated from the concentration-time curves ofCM in much the same way as it is estimated from other indicator-dilution curves. In our early work with clinical application of videodensitometric measurement of blood flow in the iliac artery, we found that this method did not offer as high a degree of accuracy as one would have expected from investigations by other authors. We saw that we needed to examine the following problems: 1. We had to investigate whether our conventional X-ray equipment and video densitometer could be viewed as a linear measuring system. To what extent do unavoidable nonlinear changes in the measuring signals influence the blood flow values? 2.

Therapeutic Angiography in Neuroradiology: Clinical Objectives and Results. With 7 Figures.- Densitometrie Investigations of Renal Perfusion by Dynamic X-Ray Computed Tomography With 13 Figures.- Percutaneous Transhepatic Drainage: Technique, Results, and Special Applications. With 45 Figures.- Videodensitometric Measurements of the Blood Flow in the Model Circulation and in the Iliac Arteries: Methodological Investigations. With 17 Figures.

Erscheint lt. Verlag	18.11.2011
Reihe/Serie	Frontiers in European Radiology
Co-Autor	P. Lasjaunias, P. Halim, L. Lopez-Ibor, U. Reiser, J. Buch, F.H.W. Heuck, R. Köster, H. Fröhlich
Zusatzinfo	IV, 160 p.
Verlagsort	Berlin
Sprache	englisch
Maße	170 x 244 mm
Gewicht	301 g
Themenwelt	Medizinische Fachgebiete ► Radiologie / Bildgebende Verfahren ► Radiologie
Schlagworte	Angiography • Radiology • X-Ray
ISBN-10	3-642-69719-4 / 3642697194
ISBN-13	978-3-642-69719-7 / 9783642697197
Zustand	Neuware