. Radiography and radio-therapeutics . IOGRAPHY Vertebra the maximum clear space between the two, this clear space containing theoesophagus. A little practice enables the operator to get the best patient is told to swallow some ojjaque food, and the operator keepsa careful watch for its passage down the oesophagus, this being indicated by a dark rapidly moving shadowpassing down the oesophagusto enter the stomach. Anydelay in transit should becarefully noted. By thismethod of examination it ispossible accurately to locatestricture of the oesophagus orobstruction at the cardiac end
. Radiography and radio-therapeutics . IOGRAPHY Vertebra the maximum clear space between the two, this clear space containing theoesophagus. A little practice enables the operator to get the best patient is told to swallow some ojjaque food, and the operator keepsa careful watch for its passage down the oesophagus, this being indicated by a dark rapidly moving shadowpassing down the oesophagusto enter the stomach. Anydelay in transit should becarefully noted. By thismethod of examination it ispossible accurately to locatestricture of the oesophagus orobstruction at the cardiac endof the stomach. Foreignbodies may readily be detectedHeart in the oesophagus and accu-rately located. The other useful positionsare (4) left antero-lateral, left™ oblique ; ^ (5) lateral. Radioscopy and radio-graphy may both be employedin the examination of theoesophagus. They are valuableaids in the diagnosis of manydiseases of the oesophagus, andare of the greatest help to theclinician when combined withThe technique is similar to. Plate Fig. 257.—Diagram to show the position for lateraloblique examination of the tliorax, and tlie path ofthe rays from tube to plate. the examination with the oesophagoscope that described in the routine examination of the thorax, the lateral and lateral oblique positions being the most useful. A brief consideration of the departures from the normal met with inthe oesophagus will be necessary, and where possible the method of demon-stration and appearances under X-rays will be referred to. Anomalies of the (Esophagus The chief congenital conditions met with are : (1) Imperforate (Eso-phagus ; (2) Stenosis; (3) (Esophago-tracheal Fistula; and (4) PharyngealPouches. * The author has found a simple method of olitaining the best position for the examin-ation of the oesophagus. The patient stands with his back and the left side of the thoraxtoward the fluorescent screen; the left hand is pressed against the board in front of thetube-box while the
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