title: Endovascular gamma irradiation for the prevention restenosis after angioplasty of femoropopliteal de novo stenoses.
abstract: The purpose of this study was to investigate the effectiveness and detect side effects of centered, overlapped endovascular gamma irradiation after angioplasty of de novo femoropopliteal stenoses. Thirty patients (age 65.3+/-9.2 years) with arterial occlusive disease were prospectively enrolled to receive endovascular gamma irradiation (192-iridium, 14 Gy centered at 2 mm vessel wall) immediately after percutaneous transluminal angioplasty (PTA) of femoropopliteal stenoses. Irradiation overlapped dilatation by 1-2 cm at each end. Follow-up involved angiography after 12 months; duplex sonography; and interviews before and after PTA and at 1, 6, and 12 months follow-up. PTA and centered endovascular irradiation were performed successfully in all patients. Three thromboembolic complications occurred during irradiation. Angiographic and clinical follow-up was possible in 28 patients. The angiographic degree of stenosis was 73.8%+/-16.3% before and 3.6%+/-23.5% after PTA and was 3.5%+/-43.7% at the 1-year follow-up. Restenosis (>50%) of the target lesion developed in three patients (10.7%) and edge stenoses (>30%) in nine patients (32.1%). An aneurysm of the irradiated segment in one patient was treated by stenting. The rate of retreatment was 17.9%. The vessel diameter after endovascular gamma irradiation and PTA of femoropopliteal stenoses remained stable. Restenosis, induction of edge stenoses, and aneurysm were reasons for reinterventions.
authors.affiliation: Department of Radiology, University of Cologne, Joseph-Stelzmann-Str., 50924, Cologne, Germany. Karsten.Krueger@uni-koeln.de
authors.forename: Karsten
authors.initials: K
authors.lastname: Krueger
authors.forename: Mark
authors.initials: M
authors.lastname: Bendel
authors.forename: Markus
authors.initials: M
authors.lastname: Zaehringer
authors.forename: David
authors.initials: D
authors.lastname: Strohe
authors.forename: Christopher
authors.initials: C
authors.lastname: Bangard
authors.forename: Carsten
authors.initials: C
authors.lastname: Weise
authors.forename: Rolf-Peter
authors.initials: RP
authors.lastname: Mueller
authors.forename: Klaus
authors.initials: K
authors.lastname: Lackner
mesh_terms: D000368:Aged; D015901:Angiography, Digital Subtraction / Q000379:methods*; D000800:Angioplasty, Balloon; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000532:radiotherapy*; D001918:Brachytherapy / Q000379:methods*; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging / Q000528:radiation effects*; D005500:Follow-Up Studies; D005720:Gamma Rays / Q000627:therapeutic use*; D006801:Humans; D007511:Ischemia / Q000000981:diagnostic imaging / Q000532:radiotherapy; D007866:Leg / Q000098:blood supply; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery / Q000000981:diagnostic imaging / Q000528:radiation effects*; D011879:Radiotherapy Dosage; D012008:Recurrence; D019233:Retreatment; D012307:Risk Factors; D013923:Thromboembolism / Q000000981:diagnostic imaging / Q000209:etiology