RESUMO
Objective To assess the quality of coronal multi-planar reconstructed versus direct coronal scan images and to confirm whether the multiplanar reconstructed image can replace coronal scan.Methods One hundred and sixteen patients with orbital and paranasalsinuses disease were examined with GE Lightspeed plus 4 slices helical CT.All patients had transvers scan,and the coronal multiplannarreconstructed images were reformatted basis on transverse scan.All reformatted and scanned images were evaluated by the senior radiologists.Results In 116 cases,simultaneously multiplanar reconstructed images were performed in 60 cases,the quality of reformatted coronal imageswas similar to direct coronal scan in revealing normal anatomy and lesions of orbit and paranasal sinuses,all images were excellent andimaging quality was grade Ⅰ.54 cases couldn't be undergone direct coronal scan but reformatted coronal images also acquired the effect of diagnosis(32 cases were grade Ⅰ and 3 cases were grade Ⅱ on quality).Conclusion Direct coronal scan can be substitued by multiplanar reconstruction of multi-slice helical CT scan for orbit and paranasal sinuses.