@inproceedings{QamhiyehKhouyaZylkaetal.2021, author = {Qamhiyeh, Sima and Khouya, A. and Zylka, Waldemar and Stuschke, M. and P{\"o}ttgen, C.}, title = {Vergleich der interfraktionellen Variation der Zwerchfell-Position im atemgetriggerten CBCT mit dem Planungs-4D-CT als Basis f{\"u}r das Atemcoaching und f{\"u}r die Dosisakkumulation}, series = {Strahlentherapie und Onkologie. Journal of radiation oncology, biology, physics}, volume = {197}, booktitle = {Strahlentherapie und Onkologie. Journal of radiation oncology, biology, physics}, number = {Supplement 1}, issn = {0179-7158}, doi = {10.1007/s00066-021-01791-4}, pages = {S39 -- S40}, year = {2021}, language = {de} } @inproceedings{EseQamhiyehKreutneretal.2018, author = {Ese, Zehra and Qamhiyeh, Sima and Kreutner, Jakob and Schaefers, Gregor and Erni, Daniel and Zylka, Waldemar}, title = {Erweiterte CT Hounsfield Werte Skala als eine Methode zu Verbesserung der Strahlentherapie f{\"u}r Patienten mit aktiven und metallischen Implantaten}, series = {Konferenz: 49. Jahrestagung der DGMP und 21. Jahrestagung der Deutschen Sektion der ISMRM, 19.-22. September 2018 in N{\"u}rnberg}, booktitle = {Konferenz: 49. Jahrestagung der DGMP und 21. Jahrestagung der Deutschen Sektion der ISMRM, 19.-22. September 2018 in N{\"u}rnberg}, year = {2018}, language = {de} } @inproceedings{EseTumaQamhiyehetal.2018, author = {Ese, Zehra and Tuma, Lara and Qamhiyeh, Sima and Kreutner, Jakob and Schaefers, Gregor and Erni, Daniel and Zylka, Waldemar}, title = {Extended CT Hounsfield values scale as a method to improve radiotherapy for patients with active and metallic implants}, series = {Biomedical engineering = Biomedizinische Technik. Joint journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering}, volume = {63}, booktitle = {Biomedical engineering = Biomedizinische Technik. Joint journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering}, number = {S1}, issn = {0013-5585}, doi = {10.1515/bmt-2018-6051}, pages = {303}, year = {2018}, language = {en} } @incollection{EseQamhiyehKreutneretal.2018, author = {Ese, Zehra and Qamhiyeh, Sima and Kreutner, Jakob and Schaefers, Gregor and Erni, Daniel and Zylka, Waldemar}, title = {CT Extended Hounsfield Unit Range in Radiotherapy Treatment Planning for Patients with Implantable Medical Devices}, series = {World Congress on Medical Physics and Biomedical Engineering 2018. June 3-8, 2018, Prague, Czech Republic (Vol.3)}, booktitle = {World Congress on Medical Physics and Biomedical Engineering 2018. June 3-8, 2018, Prague, Czech Republic (Vol.3)}, editor = {Lhotska, Lenka and Sukupova, Lucie and Lacković, Igor and Ibbott, Geoffrey S.}, publisher = {Springer}, address = {Singapore}, isbn = {978-981-10-9022-6}, doi = {10.1007/978-981-10-9023-3_111}, publisher = {Westf{\"a}lische Hochschule Gelsenkirchen Bocholt Recklinghausen}, pages = {599 -- 603}, year = {2018}, abstract = {Radiotherapy (RT) treatment planning is based on computed tomography (CT) images and traditionally uses the conventional Hounsfield unit (CHU) range. This HU range is suited for human tissue but inappropriate for metallic materials. To guarantee safety of patient carrying implants precise HU quantification is beneficial for accurate dose calculations in planning software. Some modern CT systems offer an extended HU range (EHU). This study focuses the suitability of these two HU ranges for the quantification of metallic components of active implantable medical devices (AIMD). CT acquisitions of various metallic and non-metallic materials aligned in a water phantom were investigated. From our acquisitions we calculated that materials with mass-density ρ > 3.0 g/cm3 cannot be represented in the CHU range. For these materials the EHU range could be used for accurate HU quantification. Since the EHU range does not effect the HU values for materials ρ < 3.0 g/cm3, it can be used as a standard for RT treatment planning for patient with and without implants.}, language = {en} }