Study Year MRI Inflammatory lesion
considered
Inflammatory lesion
ADC value reported
Taha et al. [20] 2014 1.5 T Mucocele, inflammatory polyp, fungal sinusitis 1.6 x 10-3 mm2/s
El-Gerby and El-Anwar [21] 2017 1.5 T Acute chronic sinusitis, sinonasal polyps,
fungal sinusitis, mucocele
and Wegner’s granulomatosis
Ranged from 1.54 x 10-3 mm2/s
to 2.72 x 10-3 mm2/s
Kilickesmez et al. [22] 2018 1.5 T Mucosal thickening 2.23 x 10-3 mm2/s
Xiao et al. [31] 2018 3 T Inflammatory polyp Reported only for the group of
benign lesions
Das et al. [32] 2017 1.5 T Inflammatory polyp 1.84 x 10-3 mm2/s
Jiang et al.[33] 2017 3 T Inflammatory polyp 1.61 x 10-3 mm2/s
Wang et al. [34] 2017 3 T Inflammatory polyp Reported only for the group of
benign lesions
Sasaki et al. [35] 2011 1.5 T Rhinosinusitis, inflammatory polyps,
fungal infection
1.5 x 10-3 mm2/s
Sasaki et al. [36] 2011 1.5 T Rhinosinusitis, inflammatory polyps,
fungal infection
1.48 x 10-3 mm2/s
Razek et al. [37] 2009 1.5 T Inflammatory polyps 1.95 x 10-3 mm2/s
White and Zhang [38] 2008 1.5 T Sinonasal secretions Ranged from 2.91 to 35.7 x 10-4 mm2/s

MRI = magnetic resonance imaging; ADC = apparent diffusion coefficient.