Table 3

Radiation Necrosis Events (Per-Lesion Analysis)

Diagnostic Modality N = 55 Necrosis Events
n, %Toxicity Graden, %
MRI + clinical judgment7, 12.7%Grade 1 (radiographic only)22, 40.0%
MRI perfusion/ spectroscopy31, 56.4%Grade 2 (medical therapy required)23, 41.8%
MR perfusion7, 12.7%Grade 3 (surgical therapy required)10, 18.2%
MR spectroscopy2, 3.6%
Surgical resection10, 18.2%
Diagnostic Modality N = 55 Necrosis Events
n, %Toxicity Graden, %
MRI + clinical judgment7, 12.7%Grade 1 (radiographic only)22, 40.0%
MRI perfusion/ spectroscopy31, 56.4%Grade 2 (medical therapy required)23, 41.8%
MR perfusion7, 12.7%Grade 3 (surgical therapy required)10, 18.2%
MR spectroscopy2, 3.6%
Surgical resection10, 18.2%
Table 3

Radiation Necrosis Events (Per-Lesion Analysis)

Diagnostic Modality N = 55 Necrosis Events
n, %Toxicity Graden, %
MRI + clinical judgment7, 12.7%Grade 1 (radiographic only)22, 40.0%
MRI perfusion/ spectroscopy31, 56.4%Grade 2 (medical therapy required)23, 41.8%
MR perfusion7, 12.7%Grade 3 (surgical therapy required)10, 18.2%
MR spectroscopy2, 3.6%
Surgical resection10, 18.2%
Diagnostic Modality N = 55 Necrosis Events
n, %Toxicity Graden, %
MRI + clinical judgment7, 12.7%Grade 1 (radiographic only)22, 40.0%
MRI perfusion/ spectroscopy31, 56.4%Grade 2 (medical therapy required)23, 41.8%
MR perfusion7, 12.7%Grade 3 (surgical therapy required)10, 18.2%
MR spectroscopy2, 3.6%
Surgical resection10, 18.2%
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