Jacob Graversen Johansen

Associate Professor Department of Clinical Medicine, Aarhus University Hospital jacjoa@rm.dk
Research interests

DK: Jeg er fysiker med speciale i dosimetri. Mit fokusområde er tidsopløst dosimetri gennem brugen af scintillator-baserede detektorer. Jeg har været med til at udvikle et nyt detektorsystem, som i øjeblikket testes for behandlingsformerne brachyterapi, protonterapi samt røntgenterapi med lavenergetiske fotoner.

UK: I am a physicist working with dosimetry. My main focus is time-resolved dosimetry using scintillator based detectors. Currently, I am testing in-house developed and built detectors for brachytherapy, proton therapy and low-energy X-ray therapy.

 Workgroups Publications
  • Kanouta E, Johansen JG, Kertzscher G, Sitarz MK, Sørensen BS, Poulsen PR Time structure of pencil beam scanning proton FLASH beams measured with scintillator detectors and compared with log files Med Phys . 2022 Mar;49(3):1932-1943 2022
  • Erik B Jørgensen, Gustavo Kertzscher, Simon Buus, Lise Bentzen, Steffen B Hokland, Susanne Rylander, Kari Tanderup, Jacob G Johansen Accuracy of an in vivo dosimetry-based source tracking method for afterloading brachytherapy - A phantom study Med Phys. 2021 May;48(5):2614-2623 2021
  • Erik B Jørgensen, Jacob G Johansen, Joakim Overgaard, Dominique Piché-Meunier, Daline Tho, Haydee M L Rosales, Kari Tanderup, Luc Beaulieu, Gustavo Kertzscher, Sam Beddar A high-Z inorganic scintillator-based detector for time-resolved in vivo dosimetry during brachytherapy Med Phys. 2021 Nov;48(11):7382-7398 2021
  • Erik B Jørgensen, Simon Buus, Lise Bentzen, Steffen B Hokland, Susanne Rylander, Gustavo Kertzscher, Sam Beddar, Kari Tanderup, Jacob G Johansen 3D dose reconstruction based on in vivo dosimetry for determining the dosimetric impact of geometric variations in high-dose-rate prostate brachytherapy Radiother Oncol. 2022 Jun;171:62-68 2022
  • Peter Georgi, Gustavo Kertzscher, Lars Nyvang, Jaroslav Šolc, Thorsten Schneider, Kari Tanderup, Jacob Graversen Johansen Toward 3D dose verification of an electronic brachytherapy source with a plastic scintillation detector Med Phys. 2022 May;49(5):3432-3443 2022
  • Verhaegen, F., Fonseca, G.P., Johansen, J.G., Beaulieu, L., Beddar, S., Greer, P., Jornet, N., Kertzscher, G., McCurdy, B., Smith, R.L., Mijnheer, B., Olaciregui-Ruiz, I., Tanderup, K. Future directions of in vivo dosimetry for external beam radiotherapy and brachytherapy Physics and Imaging in Radiation Oncology, 2020, 16, pp. 18-19 2020
  • Fonseca, G.P., Johansen, J.G., Smith, R.L. Beaulieu, L., Beddar, S., Kertzscher, G.,Verhaegen, F., Tanderup, K In vivo dosimetry in brachytherapy: Requirements and future directions for research, development, and clinical practice Physics and Imaging in Radiation Oncology, 2020, 16, pp. 1-11 2020
  • Johansen JG, Rylander S, Buus S, Bentzen L, Hokland SB, Søndergaard CS, With AKM, Kertzscher G, Tanderup K. Time-resolved in vivo dosimetry for source tracking in brachytherapy Brachytherapy. 2018 Jan - Feb; 17(1): 122-132 2018
  • Johansen JG, Kertzscher G, Jørgensen EB, Rylander S, Bentzen L, Hokland SB, Søndergaard CS, With AKM, Buus S, Tanderup K. Dwell time verification in brachytherapy based on time resolved in vivo dosimetry Phys Med. 2019 Apr;60:156-161. 2019
  • Linares Rosales HM, Johansen JG, Kertzscher G, Tanderup K, Beaulieu L, Beddar S 3D source tracking and error detection in HDR using two independent scintillator dosimetry systems Med Phys . 2021 May;48(5):2095-2107 2021
  • Sørensen BS, Sitarz MK, Ankjærgaard C, Johansen JG, Andersen CE, Kanouta E, Grau C, Poulsen P Pencil beam scanning proton FLASH maintains tumor control while normal tissue damage is reduced in a mouse model Radiother Oncol. 2022 Oct;175:178-184 2022
  • Kanouta E, Poulsen PR, Kertzscher G, Sitarz MK, Sørensen BS, Johansen JG Time-resolved dose rate measurements in pencil beam scanning proton FLASH therapy with a fiber-coupled scintillator detector system Med Phys. 2022 Dec 12 2022