Mark BM Hofman1, Cristina Lavini2, Albert van der Zwan3, Carola van Pul4, Sara H Muller5, Mette K Stam6, Marinette van der Graaf7, Carla Kloeze8, Bastiaan J van Nierop9, Wouter Teeuwisse10, Peter Kappert11, Evie EM Kolsteren12, Kristie Venhorst12, and Joost PA Kuijer13
1Radiology and Nuclear Medicine, Amsterdam UMC, Vrije Universiteit, Amsterdam, Netherlands, 2Radiology and Nuclear Medicine, Amsterdam UMC location AMC, Amsterdam, Netherlands, 3, Neurology and Neurosurgery, UMC Utrecht Brain Center, Utrecht, Netherlands, 4Maxima Medical Centre, Eindhoven, Netherlands, 5Antoni van Leeuwenhoek Hospital, Amsterdam, Netherlands, 6Radiology, LUMC, Leiden, Netherlands, 7Imaging, Radboud UMC, Nijmegen, Netherlands, 8Catharina Hospital, Eindhoven, Netherlands, 9Radiology and Nuclear Medicine, University Medical Centre Utrecht, Utrecht, Netherlands, 10CJ Gorter Center for High Field MRI, LUMC, Leiden, Netherlands, 11Radiology, UMCG, Groningen, Netherlands, 12Knowledge Institute Medical Specialists, Utrecht, Netherlands, 13Radiology and Nuclear Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
1Radiology and Nuclear Medicine, Amsterdam UMC, Vrije Universiteit, Amsterdam, Netherlands, 2Radiology and Nuclear Medicine, Amsterdam UMC location AMC, Amsterdam, Netherlands, 3, Neurology and Neurosurgery, UMC Utrecht Brain Center, Utrecht, Netherlands, 4Maxima Medical Centre, Eindhoven, Netherlands, 5Antoni van Leeuwenhoek Hospital, Amsterdam, Netherlands, 6Radiology, LUMC, Leiden, Netherlands, 7Imaging, Radboud UMC, Nijmegen, Netherlands, 8Catharina Hospital, Eindhoven, Netherlands, 9Radiology and Nuclear Medicine, University Medical Centre Utrecht, Utrecht, Netherlands, 10CJ Gorter Center for High Field MRI, LUMC, Leiden, Netherlands, 11Radiology, UMCG, Groningen, Netherlands, 12Knowledge Institute Medical Specialists, Utrecht, Netherlands, 13Radiology and Nuclear Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
Can a patient with an aneurysm clip undergo an MRI exam? The Dutch Association of Medical
Specialists wrote a guideline that includes a decision flow diagram and the
risk estimates whether an unknown clip type might be ferromagnetic.
Figure
1: Flowchart with decision tree for MRI examination in
patient with a cerebral aneurysm clip, with references to Tables numbers in
this ISMRM abstract (which differ in numbering from the full guideline). Zoom in your browser to read. While considering all evidence and considerations it
was recognized that withholding an MR exam for large patients groups in which
it is likely but not entirely certain that the aneurysm clip is
non-ferromagnetic, will impact patient’s diagnostics.
Table 4: Probability that an unknown type of cerebral aneurysm clip is not safe
for MRI; as estimated by the working group.