. Radiography and radio-therapeutics . Fig. 395.—Tube arranged oil a length of pliable silver wire. This is a convenient form of applicatorfor the treatment of growths in the lower half of the oesophagus. The wire keeps the radiumtube in position, and it is fixed outside the mouth with adhesive plaster. oesophagus up to the time they died of secondary growth in the is important that the stricture should be definitely located before theradium tube is introduced. A radiographic examination with a bismuthcachet or semi-liquid bismuth is used to enable us to recognise the positionof
. Radiography and radio-therapeutics . Fig. 395.—Tube arranged oil a length of pliable silver wire. This is a convenient form of applicatorfor the treatment of growths in the lower half of the oesophagus. The wire keeps the radiumtube in position, and it is fixed outside the mouth with adhesive plaster. oesophagus up to the time they died of secondary growth in the is important that the stricture should be definitely located before theradium tube is introduced. A radiographic examination with a bismuthcachet or semi-liquid bismuth is used to enable us to recognise the positionof the stricture. A radium tube in a platinum filter, 2 mm., is attached to a RADIUM IN CANCER 535. length of pliable silver wire, which is enclosed in a rubber tube of 2 to cut off the secondary radiations. When it iff desirable to producea superficial reaction a thinner filter may be used, a J-mm. platinum tubein a rubber tube being used. The exposure is proportionately shorter, alarger percentage of the Beta rays being employed. The tube is passedinto position either with or without an anaesthetic (in most cases it is betterto give an anaesthetic), and then with a Brunning apparatus the stricturecan be examined, and ifnecessary dilated to allowof the passage of theradium tube. The silverwire is brought out at themouth and fixed to theside of the face. Whenthe exposure is finisheda special tube may beintroduced through thestricture, this securing thedouble purpose of keepingthe channel open for atime, and of allowing thepatient to be fed throughthe tube. The durationof the exposure is deter-mined by the quantity ofradium used and theamount of growth pre-sent. A radiograph
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