I admit frankly that if the otolaryngologist had been satisfied with the results obtained from the roentgenographic examinations of the paranasal sinuses, I would never have carried out the experiments which form the basis of this paper. And I feel deeply indebted to my colleagues, the otolaryngologists of New Orleans, for the incentive to undertake this work, and when the experiments were under way, for valuable suggestions and assistance. Later, when the results obtained with dried skulls had to be confirmed on living heads, with and without diseased sinuses, their cooperation and advice became invaluable.
I had become thoroughly convinced of the inadequacy and inaccuracy of the findings in roentgenograms intended to show the sphenoid and the ethmoids. I knew of no definite and positive landmarks by which the sphenoid sinus could be identified, and I not only found it difficult and almost impossible when roentgenographing the heads of different
GRANGER A. POSITIVE IDENTIFICATION OF SPHENOID AND ETHMOID SINUSES. JAMA. 1923;81(16):1336–1341. doi:10.1001/jama.1923.02650160010003
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