Proceedings of the European Symposium on Frontiers in Science and Technology with Synchrotron Radiation

J. Phys. IV France 04 (1994) C9-279-C9-286
DOI: 10.1051/jp4:1994949

Coronary angiography with synchrotron radiation

W.-R. Dix¹, H.J. Besch², W. Graeff¹, C.W. Hamm³, G. Illing¹, W. Kupper⁴, M. Lohmann², T. Meinertz³, R.H. Menk¹, B. Reime¹, C. Rust³, L. Schildwächter¹, U. Tafelmeier¹ and A.H. Walenta<sup>2

1</sup>  Hamburger Synchrotron-Strahlungslabor, HASYLAB at DESY, Notkestr. 85, 22607 Hamburg, Germany
²  Fachbereich 7 Physik der Universität Gesamthochschule Siegen, Adolf-Reichwein-Str. 2, 57068 Siegen, Germany
³  Kardiologische Abteilung der Medizinischen Klinik, Universitäts-Krankenhaus Eppendorf, Martinistr. 52, 20251 Hamburg, Germany
⁴  Herz-Kreislauf-Klinik, Römstedter Str. 25, 29549 Bad Bevensen, Germany

Abstract
Worldwide several systems for Digital Subtraction Angiography in energy subtraction mode (dichromography) are developed. One of the systems which allows investigations of patients - the system NIKOS in the Hamburger Synchrotronstrahlungslabor HASYLAB at DESY is described. The system consists out of six main parts : The 20 pole wiggler HARWI in the beamline W2 of the storage ring DORIS, the two beam monochromator for the two 12.5 cm wide monochromatic X-ray beams, the safety system, the fast scanning device, the fast low-noise two-line ionization chamber and the computer system. Since 1990 patients were investigated with the system NIKOS. Aim of the work is to visualize coronary arteries down to 1 mm diameter with an iodine mass density of 1 mg/cm², thus allowing non-invasive investigations by intravenous application of the contrast medium. The two images for subtraction are simultaneously taken with photon energies just below and above the iodine K-edge (33.17 keV) in a line scan mode. Intravenous angiograms from investigations with version III of the system NIKOS are presented and the next steps for getting an increased image quality are described.

© EDP Sciences 1994