Radiographs of the brain

Antero-posterior (A-P) pneumoencephalogram

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Image #34-6

Radiographs of the brain Antero-posterior (A-P) pneumoencephalogram This roentgenogram was made with the patient in a supine position. The anterior horns and central parts of the lateral ventricles have been visualized by their content of air. The third ventricle (2) and cerebral aqueduct (1) are also well filled. The cisterns of the lateral fossae (14) are clearly outlined by their content of air. The basal cisterns likewise contain quantities of air but the margins of these spaces are obscured. (These films have been reproduced through the courtesy of Dr. Howard L. Jones of the Palo Alto Hospital.) 1 . Cerebral aqueduct 2 . Third ventricle 3 . Anterior horn lateral ventricle right 4 . Calvaria 5 . Central part lateral ventricle 6 . Orbital part of frontal bone 7 . Outline of petrosal (pyramidal) part of temporal bone 8 . Frontal sinus 9 . Cribriform plate ethmoid bone 10 . Bony nasal septum 11 . Inferior nasal concha 12 . Nasal cavity 13 . Foramen rotundum sphenoid bone 14 . Cistern of lateral cerebral fossa 15 . Mastoid part of temporal bone