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Letters to the Editor
April 1999

Imaging Plane Angulation and Partial Volume

Arch Otolaryngol Head Neck Surg. 1999;125(4):478-479. doi:

In reply

We thank Jungehulsing and Damm for their comments. They correctly point out that the plane of angulation is different for the preoperative and postoperative CT scans shown in our article. Although our radiology staff makes every effort to perform such scans in a reproducible manner, small variations in patient positioning sometimes occur, particularly when scanning in the coronal plane. Since the angulation of the 2 scans performed 6 months apart was not the same, we selected the 2 closest coronal cuts that did coincide along the roof of the frontal sinuses. These 2 images served to demonstrate the tripartite configuration of the frontal sinus anatomy, the surgical removal of the entire frontal sinus floor, and the successful eradication of disease.

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