ASL has shown potential to depict residual tumor compared to anatomical imaging in previous intraoperative MRI (iMRI) study performed at 1.5T. However, the technique has not been evaluated at higher field, where field inhomogeneities could compromise the labeling efficiency. We aimed to assess feasibility and utility of iMRI-ASL at 3T. To that end, a PCASL sequence was evaluated in 10 patients. In one patient ASL depicted an additional high CBF focus indicating neovascularization (known to correlate with higher grade component) that wasn’t depicted in the anatomical images, favoring the use of ASL in the iMRI setting to achieve maximal resection.
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