(1) Royal Medical Services, Amman, Jordan
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The aim of this paper was to compare the quality of CT scan images using low dose CT compared with standard dose CT in patients with suspected sinusitis.
Materials and Methods
Sixty patients aged between 6 and 25years were enrolled in this study. CT was indicated based on suspicion of sinusitis; patients were divided randomly into 2 groups. In the first group the standard CT protocol was obtained using 451 mAs in the axial projection and 503 mAs in the coronal projection. In the second group, patients were exposed to 16 mAs in the axial projection and 23 mAs in the coronal projection. Comparison of image quality was performed between the two groups based on certain parameters.
Images obtained using low mAs value showed comparable image quality to standard mAs protocol in coronal projection with minimum noise. In axial projection, the low mAs protocol, image quality was optimal in 73% plotted against the standard protocol.
low dose sinuses CT are as effective as high dose computed tomography in all patients with coronal projections and in 96.6% of patients in axial projection. Low dose sinuses computed tomography is highly recommended in the assessment of sinusitis.