Torjan Haslerud
Haukeland University Hospital
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Publication
Featured researches published by Torjan Haslerud.
The Journal of Nuclear Medicine | 2011
Amir Sabet; Hojjat Ahmadzadehfar; Marianne Muckle; Torjan Haslerud; Kai Wilhelm; Hans-Jürgen Biersack; Samer Ezziddin
99mTc-macroaggregated albumin (99mTc-MAA) scanning precedes radioembolization of the liver to detect extrahepatic shunting to the lung or gastrointestinal tract. Despite strict preventive measures in the production of 99mTc-MAA and in scanning protocols, the images frequently show a gastric concentration of free 99mTc-pertechnetate, hindering accurate evaluation of the gastroduodenal region. Our aim was to evaluate whether oral administration of sodium perchlorate (NaClO4) before 99mTc-MAA scanning will improve its accuracy by blocking free 99mTc-pertechnetate gastric uptake. Methods: In 144 patients, 171 diagnostic hepatic angiograms combined with a 99mTc-MAA scan were performed; 86 angiograms were performed after oral administration of NaClO4, and 85 were performed without this premedication. Clinical follow-up, esophagogastroduodenoscopy, and angiography served as reference standards. Results: 99mTc-MAA studies showed tracer uptake in the gastric region of 25 patients who did not receive NaClO4. The uptake was interpreted as a free 99mTc-pertechnetate concentration in 21 studies and as a 99mTc-MAA accumulation in 4 studies. In 5 patients with a free 99mTc-pertechnetate concentration, aberrant vessels were detected in angiographic reexamination, and 3 patients developed gastrointestinal ulcer. In 7 studies, gastric findings viewed pretherapeutically as free 99mTc-pertechnetate were retrospectively classified as equivocal. Of the patients receiving NaClO4, 2 showed gastric accumulation of 99mTc-MAA but no equivocal or free 99mTc-pertechnetate. Oral administration of NaClO4 increased the negative predictive value and accuracy of the test concerning the detection of gastric perfusion from 68% and 69%, respectively, to 93% and 94%, respectively. Conclusion: Oral administration of NaClO4 before the test angiogram with 99mTc-MAA resulted in effective avoidance of free 99mTc-pertechnetate concentration and, consequently, of equivocal findings in the gastroduodenal region. This technique increased test accuracy and reporter confidence, saved time in reviewing the angiograms, and can improve treatment planning and reduce therapeutic side effects.
Acta Radiologica | 2016
Torjan Haslerud; Katrin Brauckhoff; Lars A.R. Reisæter; Regina Küfner Lein; Achim Heinecke; Jan Erik Varhaug; Martin Biermann
Background Positron emission tomography (PET) with fluor-18-deoxy-glucose (FDG) is widely used for diagnosing recurrent or metastatic disease in patients with differentiated thyroid cancer (DTC). Purpose To assess the diagnostic accuracy of FDG-PET for DTC in patients after ablative therapy. Material and Methods A systematic search was conducted in Medline/PubMed, EMBASE, Cochrane Library, Web of Science, and Open Grey looking for all English-language original articles on the performance of FDG-PET in series of at least 20 patients with DTC having undergone ablative therapy including total thyroidectomy. Diagnostic performance measures were pooled using Reitsma’s bivariate model. Results Thirty-four publications between 1996 and 2014 met the inclusion criteria. Pooled sensitivity and specificity were 79.4% (95% confidence interval [CI], 73.9–84.1) and 79.4% (95% CI, 71.2–85.4), respectively, with an area under the curve of 0.858. Conclusion F18-FDG-PET is a useful method for detecting recurrent DTC in patients having undergone ablative therapy.
Acta radiologica short reports | 2017
Torjan Haslerud; Andreas Julius Tulipan; Robert M Gray; Martin Biermann
Background While e-learning has become an important tool in teaching medical students, the training of specialists in medical imaging is still dominated by lecture-based courses. Purpose To assess the potential of e-learning in specialist education in medical imaging. Material and Methods An existing lecture-based five-day course in Clinical Nuclear Medicine (NM) was enhanced by e-learning resources and activities, including practical exercises. An anonymized survey was conducted after participants had completed and passed the multiple choice electronic course examination. Results Twelve out of 15 course participants (80%) responded. Overall satisfaction with the new course format was high, but 25% of the respondents wanted more interactive elements such as discussions and practical exercises. The importance of lecture handouts and supplementary online material such as selected original articles and professional guidelines was affirmed by all the respondents (92% fully, 8% partially), while 75% fully and 25% partially agreed that the lectures had been interesting and relevant. Conclusion E-learning represents a hitherto unrealized potential in the education of medical specialists. It may expedite training of medical specialists while at the same time containing costs.
European Journal of Nuclear Medicine and Molecular Imaging | 2015
Amir Sabet; Kristina Dautzenberg; Torjan Haslerud; Anas Aouf; Amin Sabet; Birgit Simon; Karin Mayer; Hans-Jürgen Biersack; Samer Ezziddin
American journal of nuclear medicine and molecular imaging | 2013
Amir Sabet; Feras Khalaf; Torjan Haslerud; Abdullah Al-Zreiqat; Amin Sabet; Birgit Simon; Thorsten D Pöppel; Hans-Jürgen Biersack; Samer Ezziddin
The Journal of Nuclear Medicine | 2012
Amir Sabet; Khaled Ezziddin; Karl Reichmann; Hojjat Ahmadzadehfar; Torjan Haslerud; Stefan Guhlke; Hans J. Biersack; Samer Ezziddin
Journal of Clinical Oncology | 2018
Alfred Honoré; Liv Cecilie Vestrheim Thomsen; Bjarte Almås; Lars A.R. Reisæter; Jannicke Frugård; Einar Kleboe Kristoffersen; Guro Kristin Melve; Torjan Haslerud; Jarle Rørvik; Martin Biermann; Svein Inge Helle; Gunnar Kvalheim; Ole J. Halvorsen; Duke Bahn; Klaus Pantel; Haakon Ragde; Bjørn Tore Gjertsen; Anne Margrete Øyan; Karl-Henning Kalland; Christian Beisland
Cancer Research | 2018
Liv Cecilie Vestrheim Thomsen; Alfred Honoré; Bjarte Almås; Lars A.R. Reisæter; Jannicke Frugård; Einar K. Kristoffersen; Guro Kristin Melve; Torjan Haslerud; Jarle Rørvik; Martin Biermann; Svein Inge Helle; Gunnar Kvalheim; Waqas Azeem; Jan Roger Olsen; Ole J. Halvorsen; Lars A. Akslen; Duke Bahn; Klaus Pantel; Sabine Riethdorf; Haakon Ragde; Bjørn Tore Gjertsen; Anne Margrete Øyan; Karl-Henning Kalland; Christian Beisland
The Journal of Nuclear Medicine | 2015
Ankush Gulati; Torjan Haslerud; Magne Følling; Peder Gjengstø; Marius Dalin; Martin Biermann
The Journal of Nuclear Medicine | 2014
Torjan Haslerud; Amir Sabet; Ali Abdulnabi Mohamed; Carsten H. Meyer; Feras Khalaf; Hojjat Ahmadzadehfar; Claus Christian Pieper; Hans J. Biersack; Samer Ezziddin