Osteoblastoma
When diagnosing osteoblastoma, the preliminary radiologic workup should consist of radiography of the site of the patient's pain. However, computed tomography (CT) is often necessary to support clinical and plain radiographic findings suggestive of osteoblastoma and to better define the margins of the lesion for potential surgery. CT scans are best used for the further characterization of the lesion with regard to the presence of a nidus and matrix mineralization. MRI aids in detection of nonspecific reactive marrow and soft tissue edema, and MRI best defines soft tissue extension, although this finding is not typical of osteoblastoma. Bone scintigraphy (bone scan) demonstrates abnormal radiotracer accumulation at the affected site, substantiating clinical suspicion, but this finding is not specific for osteoblastoma. In many patients, biopsy is necessary for confirmation.
Saint Boniface Hospital
The Dr. Andrei Sakharov Magnetic Resonance Imaging (MRI) Facility, the first of its kind in Manitoba, has three MRI scanners. The facility allows radiologists to diagnose abnormalities of the brain, spinal cord, internal organs and joints. St. Boniface Hospital Research Centre is a recognized leader in the MRI field and has one of the largest MRI research facilities in Canada. An MRI was first installed at St. Boniface in 1990; this MRI was eventually replaced by a more modern version, which is primarily used for clinical purposes. The other two MRIs are research-oriented: they are an interventional scanner and a head-only functional unit. The clinical scanner enables the Centre to do echo-planar imaging, producing images at video rates; the interventional MRI gives physicians access to the patient during imaging, which supports research into robotics-guided laser surgery. Research carried out at the centre has been published in the "Journal of Magnetic Resonance Imaging".