. Radiography, x-ray therapeutics and radium therapy . PLATE III.—Skulls showing Departures from the Normal. a, Lateral view of skull, showing erosion of occipital bone the result of injury with secondary■disease of bone. Note large frontal sinuses. b, Skull in a child, showing moulding of the cranial bones resulting from intracranial pressure. c, Skull from a case of tumour of the brain, situated at the sella turcica ; the detail in theregion is PLATE IV.—Lower Jaw and Cervical Region. a, Dentigerous cyst iu lower jaw (buried tooth).6, Fracture through ramus of lower showing
. Radiography, x-ray therapeutics and radium therapy . PLATE III.—Skulls showing Departures from the Normal. a, Lateral view of skull, showing erosion of occipital bone the result of injury with secondary■disease of bone. Note large frontal sinuses. b, Skull in a child, showing moulding of the cranial bones resulting from intracranial pressure. c, Skull from a case of tumour of the brain, situated at the sella turcica ; the detail in theregion is PLATE IV.—Lower Jaw and Cervical Region. a, Dentigerous cyst iu lower jaw (buried tooth).6, Fracture through ramus of lower showing good detail in soft parts, absence of teeth, calcified cervical , Bismuth food in stricture at upper end of oesophagus. THE LOWER JAW . 129 In the region of the neck the cervical vertebrae are shown lq profile, thestyloid process extending downwards and forwards between the cervicalvertebrae and the descending ramus of the lower jaw. The zygomatic archis seen extending forwards on the lateral aspect of the face. The superiormaxilla gives an irregular shadow and the anterior shows a clear space, thenasal bones are faintly outlined in profile, and the lower jaw is also shown inits lateral aspect. (4) The Lower Jaw is an important bone, and rather difficult to demon-strate satisfactorily. It may be shown by two methods : (a) showing thewhole of the bone in a skiagram of the face ; (6) portions of the bone may bedemonstrated by placing a f
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