Publications 2025

Bezanson S, Aas E, Smith KA, Di Prospero L, Velec M, Ruco A, Johansen S (2025)
Survey of radiation therapists' current practices and perceptions of psychosocial and supportive care in Canada and Norway
Support Care Cancer, 33 (5), 447
DOI 10.1007/s00520-025-09492-9, PubMed 40320500

Helgesen FG, Tetteh MA, Johansen S (2025)
A survey of diagnostic reference levels for head, chest, and abdomen and pelvis CT in private diagnostic facilities in Norway
Acta Radiol, 2841851251330242 (in press)
DOI 10.1177/02841851251330242, PubMed 40232232

Tonkopi E, Iwaskow M, Lønningen CK, Johansen AM, Suganthan S, Kotlyarova Y, Badawy M, Gunn C, Kimber J, Jackson D, Tetteh MA, Holter TO, Johansen S (2025)
A multi-institutional CT practices survey of pediatric head, chest, and abdomen-pelvis examinations
Acta Radiol Open, 14 (5), 20584601251340974
DOI 10.1177/20584601251340974, PubMed 40370572

Publications 2024

Gullhaug A, Haakensen VD, De Ruysscher D, Simone CB, Hotca-Cho AE, Chhabra AM, Hellebust TP, Paulsen EE, Dimopoulos MP, Johansen S (2024)
Lung cancer reirradiation: Exploring modifications to utilization, treatment modalities and factors associated with outcomes
J Med Imaging Radiat Sci, 55 (2), 221-231
DOI 10.1016/j.jmir.2024.02.004, PubMed 38429174

Henning MK, Aaløkken TM, Martinsen AC, Pripp AH, Johansen S (2024)
Impact of individually tailored contrast medium on vascular attenuation in chest CT: a randomized controlled trial
Acta Radiol, 66 (1), 72-81
DOI 10.1177/02841851241297531, PubMed 39574330

Naimi S, Tetteh MA, Ashraf H, Johansen S (2024)
Evaluation of an in-use chest CT protocol in lung cancer screening - A single institutional study
Acta Radiol Open, 13 (7), 20584601241256005
DOI 10.1177/20584601241256005, PubMed 39044837

Oliveira M, Hogg P, Di Prospero L, Lacey S, El-Farra S, Johansen S (2024)
Research activity among diagnostic and therapeutic radiographers: An international survey
J Med Imaging Radiat Sci, 55 (2), 232-243
DOI 10.1016/j.jmir.2024.02.005, PubMed 38403518

Røhme LAG, Homme THF, Johansen ECK, Schulz A, Aaløkken TM, Johansson E, Johansen S, Mussmann B, Brunborg C, Eikvar LK, Martinsen ACT (2024)
Image quality and radiation doses in abdominal CT: A multicenter study
Eur J Radiol, 178, 111642
DOI 10.1016/j.ejrad.2024.111642, PubMed 39079322

Tonkopi E, Tetteh MA, Gunn C, Ashraf H, Rusten SL, Safi P, Tinsoe NS, Colford K, Ouellet O, Naimi S, Johansen S (2024)
A multi-institutional assessment of low-dose protocols in chest computed tomography: Dose and image quality
Acta Radiol Open, 13 (1), 20584601241228220
DOI 10.1177/20584601241228220, PubMed 38304118

Publications 2023

Amdal CD, Moan JM, Dale E, Falk RS, Johansen S, Bjordal K (2023)
Impact of hyperfractionated re-irradiation on quality of life in patients with recurrent or second primary head and neck cancer, a prospective single institutional study
Clin Transl Radiat Oncol, 42, 100654
DOI 10.1016/j.ctro.2023.100654, PubMed 37415638

Henning MK, Gunn C, Arenas-Jiménez J, Johansen S (2023)
Strategies for calculating contrast media dose for chest CT
Eur Radiol Exp, 7 (1), 29
DOI 10.1186/s41747-023-00345-w, PubMed 37303003

Henning MK, Aaløkken TM, Martinsen AC, Johansen S (2023)
The impact of body compositions on contrast medium enhancement in chest CT: a randomised controlled trial
BJR Open, 5 (1), 20230054
DOI 10.1259/bjro.20230054, PubMed 37942494

Midthun P, Kirkhus E, Østerås BH, Høiness PR, England A, Johansen S (2023)
Metal artifact reduction on musculoskeletal CT: a phantom and clinical study
Eur Radiol Exp, 7 (1), 46
DOI 10.1186/s41747-023-00354-9, PubMed 37524994

Publications 2022

Gunn C, Johansen S (2022)
Leading International Research and Educational Collaborations - A Perspective on Successful Partnerships
J Med Imaging Radiat Sci, 53 (4S), S22-S26
DOI 10.1016/j.jmir.2022.08.002, PubMed 36038424

Tonkopi E, Wikan EJ, Hovland TO, Høgset S, Kofod TA, Sefenu SK, Hughes-Ryan E, D Entremont-O Connell D, Gunn C, Holter T, Johansen S (2022)
A survey of local diagnostic reference levels for the head, thorax, abdomen and pelvis computed tomography in Norway and Canada
Acta Radiol Open, 11 (10), 20584601221131477
DOI 10.1177/20584601221131477, PubMed 36225897

Publications 2021

Cheuk Tweety N, Johansen S, Morassaei S, Erler D, Gunn C, D'Alimonte L, McLaney E, Di Prospero L (2021)
Translating interprofessional collaboration competencies to an international research team
J Med Imaging Radiat Sci, 52 (4S), S51-S56
DOI 10.1016/j.jmir.2021.09.017, PubMed 34645577

Gullhaug A, Hjermstad MJ, Yri O, Svestad JG, Aass N, Johansen S (2021)
Use of radiotherapy in breast cancer patients with brain metastases: a retrospective 11-year single center study
J Med Imaging Radiat Sci, 52 (2), 214-222
DOI 10.1016/j.jmir.2021.01.002, PubMed 33549504

Henning MK, Aaløkken TM, Johansen S (2021)
Contrast medium protocols in routine chest CT: a survey study
Acta Radiol, 63 (3), 351-359
DOI 10.1177/0284185121997111, PubMed 33648351

Karlsson AT, Hjermstad MJ, Omdahl T, Aass N, Skovlund E, Hellebust TP, Johansen S, Kaasa S, Yri OE (2021)
Overall survival after initial radiotherapy for brain metastases; a population based study of 2140 patients with non-small cell lung cancer
Acta Oncol, 60 (8), 1054-1060
DOI 10.1080/0284186X.2021.1924399, PubMed 34032536

Morassaei S, Di Prospero L, Ringdalen E, Olsen SS, Korsell A, Erler D, Ying C, Ho Choi S, Bolderston A, Middleton J, Johansen S (2021)
A survey to explore the psychological impact of the COVID-19 pandemic on radiation therapists in Norway and Canada: A tale of two countries
J Med Radiat Sci, 68 (4), 407-417
DOI 10.1002/jmrs.557, PubMed 34716675

Publications 2020

Gunn C, Friedrich-Nel H, Johansen S (2020)
International Student Mobility in Radiography: Agency and Experience
J Med Imaging Radiat Sci, 51 (2), 299-306
DOI 10.1016/j.jmir.2020.02.003, PubMed 32247789

Solbak MS, Henning MK, England A, Martinsen AC, Aaløkken TM, Johansen S (2020)
Impact of iodine concentration and scan parameters on image quality, contrast enhancement and radiation dose in thoracic CT
Eur Radiol Exp, 4 (1), 57
DOI 10.1186/s41747-020-00184-z, PubMed 32915405

Publications 2019

Alrehily F, Hogg P, Twiste M, Johansen S, Tootell A (2019)
Scoliosis imaging: An analysis of radiation risk in the CT scan projection radiograph and a comparison with projection radiography and EOS
Radiography (Lond), 25 (3), e68-e74
DOI 10.1016/j.radi.2019.02.005, PubMed 31301794

Publications 2018

Johansen S, Cvancarova M, Ruland C (2018)
The Effect of Cancer Patients' and Their Family Caregivers' Physical and Emotional Symptoms on Caregiver Burden
Cancer Nurs, 41 (2), 91-99
DOI 10.1097/NCC.0000000000000493, PubMed 28426539

Johansen S, Hauge IHR, Hogg P, England A, Lança L, Gunn C, Sanderud A (2018)
Are Antimony-Bismuth Aprons as Efficient as Lead Rubber Aprons in Providing Shielding against Scattered Radiation?
J Med Imaging Radiat Sci, 49 (2), 201-206
DOI 10.1016/j.jmir.2018.02.002, PubMed 32074039

Mohammed Ali A, Hogg P, Johansen S, England A (2018)
Construction and validation of a low cost paediatric pelvis phantom
Eur J Radiol, 108, 84-91
DOI 10.1016/j.ejrad.2018.09.015, PubMed 30396676

Sá Dos Reis C, Pires Jorge JA, York H, Flaction L, Johansen S, Mæhle S (2018)
A comparative study about motivations, expectations and future plans for professional development in four European radiography programs
Radiography (Lond), 24 (4), e91-e97
DOI 10.1016/j.radi.2018.05.007, PubMed 30292519

Sá Dos Reis C, Pires-Jorge JA, York H, Flaction L, Johansen S, Maehle S (2018)
Curricula, attributes and clinical experiences of radiography programs in four European educational institutions
Radiography (Lond), 24 (3), e61-e68
DOI 10.1016/j.radi.2018.03.002, PubMed 29976346

Publications 2017

Johansen S, Norman MH, Dale E, Amdal CD, Furre T, Malinen E, Evensen JF (2017)
Patterns of local-regional recurrence after conformal and intensity-modulated radiotherapy for head and neck cancer
Radiat Oncol, 12 (1), 87
DOI 10.1186/s13014-017-0829-5, PubMed 28545588

Publications 2016

Sygna K, Johansen S, Ruland CM (2016)
Erratum to: 'Recruitment challenges in clinical research including cancer patients and their caregivers. A randomized controlled trial study and lessons learned'
Trials, 17 (1), 133
DOI 10.1186/s13063-016-1276-6, PubMed 26965306

Publications 2015

Sygna K, Johansen S, Ruland CM (2015)
Recruitment challenges in clinical research including cancer patients and their caregivers. A randomized controlled trial study and lessons learned
Trials, 16, 428
DOI 10.1186/s13063-015-0948-y, PubMed 26407547

Tjessem KH, Bosse G, Fosså K, Reinertsen KV, Fosså SD, Johansen S, Fosså A (2015)
Coronary calcium score in 12-year breast cancer survivors after adjuvant radiotherapy with low to moderate heart exposure - Relationship to cardiac radiation dose and cardiovascular risk factors
Radiother Oncol, 114 (3), 328-34
DOI 10.1016/j.radonc.2015.01.006, PubMed 25600105

Publications 2014

Johansen S, Fosså K, Nesvold IL, Malinen E, Fosså SD (2014)
Arm and shoulder morbidity following surgery and radiotherapy for breast cancer
Acta Oncol, 53 (4), 521-9
DOI 10.3109/0284186X.2014.880512, PubMed 24495044

Publications 2013

Johansen S, Tjessem KH, Fosså K, Bosse G, Danielsen T, Malinen E, Fosså SD (2013)
Dose Distribution in the Heart and Cardiac Chambers Following 4-field Radiation Therapy of Breast Cancer: a Retrospective Study
Breast Cancer (Auckl), 7, 41-9
DOI 10.4137/BCBCR.S11118, PubMed 23589693

Tjessem KH, Johansen S, Malinen E, Reinertsen KV, Danielsen T, Fosså SD, Fosså A (2013)
Long-term cardiac mortality after hypofractionated radiation therapy in breast cancer
Int J Radiat Oncol Biol Phys, 87 (2), 337-43
DOI 10.1016/j.ijrobp.2013.05.038, PubMed 23886416

Publications 2011

Johansen S, Reinertsen KV, Knutstad K, Olsen DR, Fosså SD (2011)
Dose distribution in the thyroid gland following radiation therapy of breast cancer--a retrospective study
Radiat Oncol, 6, 68
DOI 10.1186/1748-717X-6-68, PubMed 21651829

Johansen S, Vikström J, Hjelstuen MH, Mjaaland I, Dybvik KI, Olsen DR (2011)
Dose evaluation and risk estimation for secondary cancer in contralateral breast and a study of correlation between thorax shape and dose to organs at risk following tangentially breast irradiation during deep inspiration breath-hold and free breathing
Acta Oncol, 50 (4), 563-8
DOI 10.3109/0284186X.2010.541933, PubMed 21370938

Publications 2010

Weber DC, Johanson S, Peguret N, Cozzi L, Olsen DR (2010)
Predicted risk of radiation-induced cancers after involved field and involved node radiotherapy with or without intensity modulation for early-stage hodgkin lymphoma in female patients
Int J Radiat Oncol Biol Phys, 81 (2), 490-7
DOI 10.1016/j.ijrobp.2010.05.035, PubMed 20800383

Publications 2009

Johansen S, Cozzi L, Olsen DR (2009)
A planning comparison of dose patterns in organs at risk and predicted risk for radiation induced malignancy in the contralateral breast following radiation therapy of primary breast using conventional, IMRT and volumetric modulated arc treatment techniques
Acta Oncol, 48 (4), 495-503
DOI 10.1080/02841860802657227, PubMed 19169915

Publications 2008

Johansen S, Danielsen T, Olsen DR (2008)
Estimated risk for secondary cancer in the contra-lateral breast following radiation therapy of breast cancer
Acta Oncol, 47 (3), 391-6
DOI 10.1080/02841860701846152, PubMed 18348001

Publications 2006

Johansen S, Olsen DR, Danielsen T, Malinen E (2006)
Contralateral breast doses following radiotherapy of the breast and regional lymph nodes: Measurements and treatment planning calculations
Radiother Oncol, 82 (3), 332-6
DOI 10.1016/j.radonc.2006.08.018, PubMed 16962677