McDavid W D, Welander U, Kanerva H, Tronje G, Morris C R
Oral Surg Oral Med Oral Pathol. 1984 Jan;57(1):96-101. doi: 10.1016/0030-4220(84)90268-8.
The use of the modulation-transfer function in defining the layer thickness in rotational panoramic radiography is discussed. This method is compared with other methods and is shown to be a more accurate means for describing the layer.