Bibliography Complete For 1923 And Selected Articles Abstracted On Radium And Radium Therapy

Author : Anonymous
Publisher : Rarebooksclub.com
ISBN 13 : 9781230015460
Total Pages : 24 pages
Book Rating : 4.0/5 (154 download)

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Download or read book Bibliography, Complete for 1922- and Selected Articles Abstracted on Radium and Radium Therapy. Supplement No. 1- written by Anonymous and published by Rarebooksclub.com. This book was released on 2013-09 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 edition. Excerpt: ... hours at 2 cm. and 48 hours at 2.5 cm. The area within which this lethal cancer dose is attained corresponds to isodose 40. Cancer cells beyond this ellipse are not destroyed and beyond isodose 20 are actually stimulated. It was at this po int that the feasibility of combining radium therapy with x-rays was studied. As most pelvic cancers have invaded the regional lymph-nodes. usually 6 cm. distant from the cervical canal, all cancer cells cannot be reached with radium without irreparable injuries to normal tissues. The writer has used 2 types of transformers, with an output of 140 to 300 kv. respectively, and 2 methods of measuring intensities, the direct and indirect. These methods of determining radiation intensities have made it possible to solve the problem of a correct radiation therapy, and to state whether the diseased area is traversed by a. practically homogeneous radiation. Should the combined intensities at either the bladder and rectal wall or on the skin amount to more than 130 in patients with an anteroposterior diameter of less than 20 cm., the application time of the gamma rays or x-rays or both must be reduced; should they be less than 100 in patients with an anteroposterior diameter of more than 24 cm., the application of either gamma rays or x-rays or both must be increased. The writer has employed the method with 140 kv. x-rays and radium sinoe 1919, but with 200 kv. x-rays only since I'ovember, 1921, too short a time to test the results of the newer method. The total number of cases of cancers of the female urogenital organs treated between 1914 and 1921 inclusive is 423, divided among the vulva, urethra, bladder, vagina, cervix, corpus and ovaries. No cases were refused, but experience showed that clearly localized...