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How to find us dr. ir. N.M. (Marianna) Sijtsema
University Medical Center Groningen

dr. ir. N.M. (Marianna) Sijtsema

Medical Physicist
dr. ir. N.M. (Marianna) Sijtsema
Telephone:
Secretary:
E-mail:
n.m.sijtsema umcg.nl
Research interests Publications

Research interests

Radiotherapy, Adaptive Radiotherapy (ART), Image Biomarkers, Radiomics, Adaptive Proton Therapy

Publications

Inter-fraction motion robustness and organ sparing potential of proton therapy for cervical cancer

Gort, E. M., Beukema, J. C. , Matysiak, W. , Sijtsema, N. M. , Aluwini, S., Langendijk, J. A. , Both, S. & Brouwe, C. L. , Jan-2021 , In : Radiotherapy and Oncology. 154 , p. 194-200 7 p.

Research output: Contribution to journal › Article › Academic › peer-review

Towards the clinical implementation of intensity-modulated proton therapy for thoracic indications with moderate motion: robust optimised plan evaluation by means of patient and machine specific information

Ribeiro, C. O. , Visser, S. , Korevaar, E. W. , Sijtsema, N. M. , Melissa Anakotta, R. , Dieters, M. , Both, S. , Langendijk, J. A. , Wijsman, R. , Muijs, C. T. , Meijers, A. & Knopf, A. , 2-Feb-2021 , In : Radiotherapy and Oncology.

Research output: Contribution to journal › Article › Academic › peer-review

A comprehensive motion analysis - consequences for high precision image-guided radiotherapy of esophageal cancer patients

Roos, C. T. G., Faiz, Z. , Visser, S. , Dieters, M. , van der Laan, H. P. , den Otter, L. A. , Plukker, J. T. M. , Langendijk, J. A. , Knopf, A-C. , Muijs, C. T. & Sijtsema, N. M. , 5-Nov-2020 , In : ACTA ONCOLOGICA. p. 1-8 8 p.

Research output: Contribution to journal › Article › Academic › peer-review

Can we safely reduce the radiation dose to the heart while compromising the dose to the lungs in oesophageal cancer patients?

Beukema, J. C. , Kawaguchi, Y., Sijtsema, N. M. , Zhai, T-T. , Langendijk, J. A. , van Dijk, L. V., van Luijk, P. , Teshima, T. & Muijs, C. T. , Aug-2020 , In : Radiotherapy and Oncology. 149 , p. 222-227 6 p.

Research output: Contribution to journal › Article › Academic › peer-review

Development and Internal Validation of an NTCP-model for Acute Coronary Events after Breast Cancer Radiotherapy: First Results of the MEDIRAD BRACE Study (H2020-Euratom-1.4 / 755523)

Spoor, D., Leeuwen, F. E. V., Russell, N., Boekel, N. B., Jacob, S., Combs, S. E., Borm, K., Vliegenthart, R. , Sikkema, G., van den Bogaard, V. A. B. , Sijtsema, M. , Maduro, J. H. , Shuit, E., Langendijk, H. & Crijns, A. P. G. , 1-Nov-2020 , In : International Journal of Radiation Oncology Biology Physics. 108 , 3 , p. S11-S12 2 p.

Research output: Contribution to journal › Meeting Abstract › Academic

External validation of nodal failure prediction models including radiomics in head and neck cancer

Zhai, T-T. , Wesseling, F., Langendijk, J. A. , Shi, Z., Kalendralis, P., van Dijk, L. V., Hoebers, F., Steenbakkers, R. J. H. M. , Dekker, A., Wee, L. & Sijtsema, N. M. , 11-Nov-2020 , In : Oral Oncology. 112 , 6 p. , 105083.

Research output: Contribution to journal › Article › Academic › peer-review

Head and Neck IMPT probabilistic dose accumulation: feasibility of a 2 mm setup uncertainty setting

Wagenaar, D. , Kierkels, R. G. J. , van der Schaaf, A. , Meijers, A. , Scandurra, D. , Sijtsema, N. M. , Korevaar, E. W. , Steenbakkers, R. J. H. M. , Knopf, A. C. , Langendijk, J. A. & Both, S. , 5-Sep-2020 , In : Radiotherapy and Oncology. 154 , p. 45-52 8 p.

Research output: Contribution to journal › Article › Academic › peer-review

Investigation of inter-fraction target motion variations in the context of pencil beam scanned proton therapy in non-small cell lung cancer patients

den Otter, L. A. , Anakotta, R. M. , Weessies, M., Roos, C. T. G., Sijtsema, N. M. , Muijs, C. T. , Dieters, M. , Wijsman, R. , Troost, E. G. C., Richter, C., Meijers, A. , Langendijk, J. A. , Both, S. & Knopf, A-C. , 9-Jul-2020 , In : Medical Physics. 47 , 9 , p. 3835-3844 10 p.

Research output: Contribution to journal › Article › Academic › peer-review

Is the 4D planning CT representative for breathing motion of esophageal tumors during treatment?

Roos, Q., Faiz, Z. , Dieters, M. , Laan, van der, H. P. , Otter, den, L. , Plukker, J. T. H. M. , Both, S. , Langendijk, J. A. , Knopf, A. , Muijs, C. T. & Sijtsema, N. M. , Nov-2020 , (Accepted/In press). 1 p.

Research output: Contribution to conference › Poster › Academic

Pre-treatment radiomic features predict individual lymph node failure for head and neck cancer patients

Zhai, T-T. , Langendijk, J. A. , van Dijk, L. V., van der Schaaf, A. , Sommers, L. , Vemer-van den Hoek, J. G. M. , Bijl, H. P. , Halmos, G. B. , Witjes, M. J. H. , Oosting, S. F. , Noordzij, W. , Sijtsema, N. M. & Steenbakkers, R. J. H. M. , May-2020 , In : Radiotherapy and Oncology. 146 , p. 58-65 8 p.

Research output: Contribution to journal › Article › Academic › peer-review

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