Table II.
Comparison of commonly used hyperintensity measurement scales.
| Fazekas | Coffey | Boyko | |
|---|---|---|---|
| Periventricular hyperintensity | |||
| 0 | Absent | Absent | Absent |
| 1 | Caps/pencil-thin lining | Caps | Hypointense to grey matter and hyperintense to CSF on proton density images |
| 2 | Smooth halo | Smooth halo | Isointense to grey matter and hyperintense to CSF on proton density images |
| 3 | Irregular and extending into deep white matter | Irregular and extending into deep white matter | Hyperintense to CSF on T2-weighted images |
| 4 | NA | NA | Hyperintense to CSF on T2-weighted images and isointense to CSF on T1-weighted images |
| Deep white matter hyperintensity | |||
| 0 | Absent | Absent | Absent |
| 1 | Punctate foci | Punctuate foci | Punctate |
| 2 | Beginning of confluence of foci | Beginning confluence of foci | Rounded ( <5 mm) |
| 3 | Large confluent areas | Large confluent areas | Irregular ( >5 mm) |
| 4 | NA | NA | Confluent lesions |
| Subcortical grey matter hyperintensity | |||
| 0 | NA | Absent | Absent |
| 1 | NA | Punctuate | Punctuate |
| 2 | NA | Multi-punctate | Rounded (<5 mm) |
| 3 | NA | Diffuse | Irregular (>5 mm) |
| 4 | NA | NA | Confluent lesions |
| Frontal caps | |||
| 0 | NA | NA | Absent |
| 1 | NA | NA | Present |
| Subependymal hyperintensity | |||
| 0 | NA | NA | Absent |
| 1 | NA | NA | Thin |
| 2 | NA | NA | Thick (>2 mm) |