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Author

N. Tselis

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Open access Sep 2026

Image-guided high-dose-rate brachytherapy after short-course external beam radiotherapy for elderly/frail rectal cancer patients.

PURPOSE For elderly and frail patients with rectal cancer, unfit for radical surgery or extensive chemoradiation schedules, radiotherapy dose escalation by use of high-dose-rate brachytherapy (HDR-BT) may be an alternative organ-preserving approach. METHODS 15 elderly/frail patients (median age, 83 years; ECOG 1‑2: 8...

Alexander Kristen, N. Tselis, M. Diefenhardt et al. · 0 citations
Open access Sep 2026

Trends in radiation oncology between 2015 and 2022: report from a German university radio-oncology department.

PURPOSE How have the demographics of radiotherapy patients changed between 2015 and 2022? What was the impact of the pandemic, of modified multidisciplinary therapy concepts, and of structural changes on our patient cohort? METHODS We analyzed the data of all patients who underwent computed tomography-guided radiothe...

M. Diefenhardt, D. Imhoff, N. Tselis et al. · 0 citations

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