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Table 1 The 7 variable CT-based model [12]

From: COVID-19-associated rhino-orbital mucormycosis (CAROM)—a case report

Parameters on non-contrast CT Acute invasive fungal sinusitis
o Involvement of  
• Pterygopalatine fossa  
• Nasolacrimal duct Considered positive if any 2 of the 7 features are present
• Lacrimal sac  
o Periantral fat stranding  
o Bony dehiscence  
o Nasal septal ulceration  
o Orbital invasion