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[en] For treatment of restenoses tubes (inner/outer diameter 1 and 2 mm; length 3 or 5 mm) with Y-90 foils, shielded by Ti-layers on all sides have been developed (activity 0.5 - 2 GBq). Quality checks with plastic scintillators have been developed and are correlated to absolute dose measurements performed with TLDs (1x1 mm2; 40 mg/cm2). TLD-handling and calibration for beta-dosimetry are described. Additional measurements for depth-dose and dose distribution around the tubes were done with GAFCHROMIC- films and compared to Monte-Carlo calculations with the MCNP4-code, yielding a half-value depth of 0.8 mm from the tube-surface. Manufacturing and delivery of the sources including leakage tests has been standardized, treatments (irradiation times <5min; irradiation length <30mm) are planned to start in spring '98. (authors)
Source
Christofides, Stelios; Pattichis, Constantinos; Schizas, Christos; Keravnou-Papailiou, Elpida; Kaplanis, Prodromos; Spyros, Spyrou; Christodoulides, George; Theodoulou, Yiannis (eds.); Cyprus Association of Medical Physics and Biomedical Engineering (CAMPBE), Nicosia (Cyprus); The Department of Computer Science, University of Cyprus, Nicosia (Cyprus); 220 p; ISBN 9963-607-14-4; 
; 1998; p. 131; 8. Mediterranean Conference on Medical and Biological Engineering and Computing (Medicon '98); Lemesos (Cyprus); 14-17 Jun 1998; 1 refs., 5 figs.
; 1998; p. 131; 8. Mediterranean Conference on Medical and Biological Engineering and Computing (Medicon '98); Lemesos (Cyprus); 14-17 Jun 1998; 1 refs., 5 figs.