The group also found that radiotracer decay between the PET/CT and PET/MRI acquisitions was effectively compensated by the longer scanning duration and better scanner sensitivity.
"Our study indicates that hybrid PET/MRI of intracranial tumours using C-11 methionine or Ga-68 DOTATOC can be reliably performed," Boss and his colleagues wrote. "The image quality and quantitative data achieved using PET/MRI is similar to that using PET/CT."
In addition, the authors noted that the combination of PET with MRI, instead of CT, "offers many advantages, such as higher soft-tissue contrast; reduced radiation exposure; and advanced MRI techniques such as perfusion imaging, diffusion imaging, and MR spectroscopy."
Additional clinical benefits are that PET with MRI can reduce a patient's exposure to ionizing radiation, which is present with CT.
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