J. Phys. IV France 04 (1994) C9-279-C9-286
Coronary angiography with synchrotron radiationW.-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. Walenta2
1 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
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