Table 5 MR imaging pattern for sinus involvement
From: Magnetic resonance imaging features of post-COVID-19 regional and invasive sino-nasal mucormycosis
MR imaging characteristics | N | % |
|---|---|---|
Pattern of sinus infection | ||
Sinus mucosal thickening | 23 | 37.1 |
Complete sinus opacification | 12 | 19.35 |
Combined pattern | 27 | 43.55 |
T1WI signal | ||
Hypointense | 62 | 100 |
T2WI signal | ||
Isointense/Hypointense | 6 | 9.68 |
Hyperintense | 23 | 37.1 |
Heterogeneous (high signal peripherally + low signal centrally) | 33 | 53.23 |
Sinus post-contrast enhancement | ||
Absent | 27 | 43.55 |
Present | 35 | 56.45 |
Homogeneously mucosal sinus enhancement | 7 | 11.29 |
Heterogeneously sinus enhancement | 23 | 37.1 |
Rim enhancement with central non-enhancement | 5 | 8.06 |
Black turbinate sign | ||
Absent | 28 | 45.16 |
Present | 34 | 54.84 |