Wednesday, April 22, 2015

Computed tomography MPR of Paranasal Sinuses – Avoidance of Dental Artifacts

Reformats can be done from one axial helical scan. The need for direct coronal imaging is eliminated. The SurviewÔ in this patient shows multiple metallic dental fillings (arrows). These would have caused significant artifacts if the coronal images had been acquired directly. Since the coronal and sagittal images were reconstructed from an axial data set above the level of the fillings, no artifact is present on the MPRs.

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Axial scanning + MPRs is  helpful in trauma patients, patients with respiratory distress and in pediatric and sedated patients, for whom neck extension may be difficult and dangerous.

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Computed tomography MPR of Paranasal Sinuses – Avoidance of Dental Artifacts
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