Table 1 Comparison between MR and CT perfusion
CT | MRI |
|---|---|
Detection of hemorrhage | Detection of hemorrhage with SWI |
Angiography, better resolution | Angiography, non-contrast |
Faster, more available, less restrictive | Slower, limited availability, restrictive environ |
Radiation | No radiation |
Limited in posterior fossa | Better detection in posterior fossa |
Limited detection of small lesions | Better detection of small lesions (DWI) |
Less specific in detection of “stroke mimics” | Better detection of “stroke mimics,” especially on contrast-enhanced scans |