. The American journal of roentgenology, radium therapy and nuclear medicine . Fig. 4. No. i. Universal silver filter with walls thick. No. 2. Modified Universal tube appli-cator; the walls are brass. No. 3. A rubber filterwith wall 3 mm. thick. No. 4. A stem of solder wire40 cm. long, with a small piece of adhesive tapearound the tip to keep the stem from slipping throughthe canal in the rubber filter. No. 5. Part of a softrubber Wales bougie (No. 10 or 12). The windowaccommodates one Universal tube applicator with orwithout the brass filter. No. 6. A modification ofthe soft rubber Wal


. The American journal of roentgenology, radium therapy and nuclear medicine . Fig. 4. No. i. Universal silver filter with walls thick. No. 2. Modified Universal tube appli-cator; the walls are brass. No. 3. A rubber filterwith wall 3 mm. thick. No. 4. A stem of solder wire40 cm. long, with a small piece of adhesive tapearound the tip to keep the stem from slipping throughthe canal in the rubber filter. No. 5. Part of a softrubber Wales bougie (No. 10 or 12). The windowaccommodates one Universal tube applicator with orwithout the brass filter. No. 6. A modification ofthe soft rubber Wales bougie. rectal Walles bougie. The unmodifiedbougie is very uncomfortable to wear for. Fig. 5. No. i. \\ire stem and hard rubber tip withwalls 2 mm. thick, into which the Universal tubeapplicator fits, with or without the extra brass 2. A stem made of solder wire measuring in diameter and 40 cm. in length. The screwadaptor at one end fits the applicator shown inFigure 4, No. 2. No. 3. A stem of solder wire. Abrassshell is fixed at one end devised to fit the Universaltube applicator, and a Para rubber tube extends 3to iS mm. beyond the end of the tube. any length of time. Some patients will nottolerate it at all. It does not permitaccurate introduction, since the index The Treatment b\ Radiation of Cancer of the Rectum 235 finger cannot be placed in the rectal canalat the same time. The length of the part (Fig. 4, No. 5)may varj^ to suit the tumor, but if it is6 cm. long, it is convenient, since it canbe mo^•ed along the surface of the strip of adhesi\e plaster is placed aroundthe rubber part and then fixed to the stem;this makes a rigid appli


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