Figure 1.
Measurements of perfusion parameters in a 47-year-old man with pyogenic brain abscess.
Axial contrast-enhanced MPRAGE (A) and T2W image (B) show a rim-enhancing mass with perifocal edema in the right temporal lobe. (C) On contrast-enhanced MPRAGE, three ROIs are placed over the enhancing rim (red), perifocal edema (blue) most adjacent to the enhancing rim and the contralateral NAWM (green) for the measurements of CBV (D), corrected CBV (E) and K2 (F), respectively.
Figure 2.
MR perfusion of a glioblastoma and a metastatic brain tumor.
The upper panel shows the contrast-enhanced MPRAGE (A), CBV (B), corrected CBV (C) and K2 (D) images of a necrotic glioblastoma in the left medial parietal region, and the lower panel (E, F, G and H) shows the corresponding images of a cystic metastatic brain tumor in the right occipital lobe.
Figure 3.
ROC curve analysis of CBV and corrected CBV in differentiating abscesses from glioblastomas (A), abscesses from metastases (B), and abscesses from glioblastomas and metastases.
Table 1.
Quantitative comparisons of perfusion parameters among abscesses, glioblastomas and metastases.
Table 2.
ROC analysis of CBV and corrected CBV of enhancing rim in differentiating abscesses from glioblastomas and/or metastases.