Combined pre- and postcontrast imaging provides the best opportunity to identify and characterize potential intracranial complications. Restricted diffusion on diffusion- weighted sequences can accurately identify the presence of purulent material within extra-axial collections and brain abscesses. MRI Orbits, Face, and Neck MRI orbits, face, and neck without and with IV contrast can confirm paranasal sinus inflammation and identify orbital complications and adjacent intracranial complications included in the field of view [17]. This study may be done in conjunction with MRI head for suspected orbital and intracranial complications. Although noncontrast imaging can demonstrate fluid collections and edema, combined pre- and postcontrast imaging provides the best opportunity to identify and characterize potential orbital and intracranial complications. Radiography Paranasal Sinuses There is no relevant literature to support the use of radiography in the evaluation of ARS with suspected orbital or intracranial complication. Radiography is limited in the evaluation of soft-tissue structures. SPECT or SPECT/CT Paranasal Sinuses There is no relevant literature to support the use of SPECT or SPECT/CT in the evaluation of ARS with suspected orbital or intracranial complication. Variant 3: Acute recurrent sinusitis or chronic rhinosinusitis or noninvasive fungal sinusitis or sinonasal polyposis. Possible surgical candidate for these indications or other non-neoplastic indications, including suspected silent sinus syndrome or suspected mucocele, or deviated nasal septum. Initial imaging. CRS refers to rhinosinusitis lasting >12 weeks, and the most common symptoms of CRS include nasal obstruction, facial congestion and pressure, discolored nasal discharge, and hyposmia [26].
Sinonasal Disease. Combined pre- and postcontrast imaging provides the best opportunity to identify and characterize potential intracranial complications. Restricted diffusion on diffusion- weighted sequences can accurately identify the presence of purulent material within extra-axial collections and brain abscesses. MRI Orbits, Face, and Neck MRI orbits, face, and neck without and with IV contrast can confirm paranasal sinus inflammation and identify orbital complications and adjacent intracranial complications included in the field of view [17]. This study may be done in conjunction with MRI head for suspected orbital and intracranial complications. Although noncontrast imaging can demonstrate fluid collections and edema, combined pre- and postcontrast imaging provides the best opportunity to identify and characterize potential orbital and intracranial complications. Radiography Paranasal Sinuses There is no relevant literature to support the use of radiography in the evaluation of ARS with suspected orbital or intracranial complication. Radiography is limited in the evaluation of soft-tissue structures. SPECT or SPECT/CT Paranasal Sinuses There is no relevant literature to support the use of SPECT or SPECT/CT in the evaluation of ARS with suspected orbital or intracranial complication. Variant 3: Acute recurrent sinusitis or chronic rhinosinusitis or noninvasive fungal sinusitis or sinonasal polyposis. Possible surgical candidate for these indications or other non-neoplastic indications, including suspected silent sinus syndrome or suspected mucocele, or deviated nasal septum. Initial imaging. CRS refers to rhinosinusitis lasting >12 weeks, and the most common symptoms of CRS include nasal obstruction, facial congestion and pressure, discolored nasal discharge, and hyposmia [26].