. Radiography, x-ray therapeutics and radium therapy . 128 RADIOGRAPHY shows the frontal air sinuses well. Plate I., showing frontal air sinuses,taken by this method, illustrates the points to be examined. (3) For the Examination of the Sphenoidal Sinuses, theEthmoidal Sinuses, and the Turbinate Bones, a plate is fixed on the frontof the face, and the tube centred just a little below the occipital position should also show the bones of the face and the maxillary teeth are also well demonstrated. The condyles of the jaw and the an-terior view of the tempero-maxillar
. Radiography, x-ray therapeutics and radium therapy . 128 RADIOGRAPHY shows the frontal air sinuses well. Plate I., showing frontal air sinuses,taken by this method, illustrates the points to be examined. (3) For the Examination of the Sphenoidal Sinuses, theEthmoidal Sinuses, and the Turbinate Bones, a plate is fixed on the frontof the face, and the tube centred just a little below the occipital position should also show the bones of the face and the maxillary teeth are also well demonstrated. The condyles of the jaw and the an-terior view of the tempero-maxillary articulation are also seen, while behindand a little external is the mastoid process, with its air cells clearly shown. Plate I., representing a normal skull takenin the lateral position, shows. Fig. 108.—Chair for cranial radiography. all the important structures at the base of the skull; the three levels are wellshowTi, and the various air sinuses are distinctly seen, notably the frontalair sinuses. Taking the bones of the skull from before backwards, one seesthe orbital plate of the frontal bone, the anterior clinoid process, the sellaturcica, the posterior clinoid process standing well in relief ; extendingbackwards, the petrous portion of the temporal bone appears as a denserirregular shadow ; and, immediately behind, the mastoid air cells are promi-nently shown. Then, at the posterior portion, the well-marked depressionformed by the occipital bone is shown. The thickness of the bony wall ofthe section of the skull shows the two layers of bone with the cancellousbone between them.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1915
