Introduction: In order to account for brain deformation during neurosurgery, it is beneficial to obtain images of the brain during the procedure¹. An intra-operative neurosurgical Magnetic Resonance Imaging (MRI) suite has recently been commissioned at The Canberra Hospital. The MR scanner is moveable, and brought into the operating room (OR) when updated information is required. The installation poses many challenges with regards to image quality as well as staff, patient and equipment safety. The aim of this work was to establish procedures for implementation and operation that will ensure quality and safety.
Method: Acceptance testing was performed following international guidelines², with additional tests emphasising on geometrical uncertainty. Magnetic and RF shielding was confirmed, and all equipment that will be used in the OR was tested for magnetically induced displacement. Safety policies and operating procedures were established and all staff requiring unsupervised access was educated accordingly.
Results and Discussion: The MRI scanner was within specifications for all tests at both scanner locations, which will enable use both intra-operatively (in the OR) as well as for diagnostic purposes (in the Magnet Bay). More than 20 operating procedures were developed, and more than 200 staff members have been educated in MRI safety.
Conclusion: The MRI Suite has been successfully installed and commissioned, and high quality images can be obtained at both scanner locations. Procedures have been developed to ensure safety of staff and patients.
References:
¹Mislow et al, Neurosurg Clin N Am 2009, pp 137.
²Och et al, Med Phys 1992, pp 217.