Transactions of the American Association of Obstetricians, Gynecologists, and Abdominal Surgeons for the year ... . s in the com-bined use of the roentgen and radium radiation. A solution of theproblem is shown in Fig. 1. It shows the intensity of measured raysat each point within the pelvis for x-rays, also the isodoses of gamma-rays measured with a 50 mg. radium element capsule within water,thus indicating the total primary and secondary radiations. The 330 HENRY SCHMITZ measured x-ray intensities also represent a summation of primary andsecondary radiations. Table II indicates how unfavorab
Transactions of the American Association of Obstetricians, Gynecologists, and Abdominal Surgeons for the year ... . s in the com-bined use of the roentgen and radium radiation. A solution of theproblem is shown in Fig. 1. It shows the intensity of measured raysat each point within the pelvis for x-rays, also the isodoses of gamma-rays measured with a 50 mg. radium element capsule within water,thus indicating the total primary and secondary radiations. The 330 HENRY SCHMITZ measured x-ray intensities also represent a summation of primary andsecondary radiations. Table II indicates how unfavorably the sum-mation of radiation becomes with an increase in the anteroposteriordiameter above 18 cm. The greater diameters are found in obese andlarge-boned women. To increase the radiation dose in such patientswe have of late applied the x-rays through three portals of advantages thus gained are an increased x-ray intensity in thecancer area as demonstrated in Fig. 2. Should radiation treatment he combined with surgical procedures toincrease the efficacy of either one? It has been proposed to precede. / AT. —]7&*> ft ~c*rvtc+l . ear 11*2 ^8 for jt-^ys. I Fig. 1.—Median longitudinal section of pelvis showing isodoses of radium capsule, columnto left gives total x-ray intensities obtained for each centimeter of depth. Modified fromOpitz-Friedrich. panhysterectomies for cancer of the uterus with radiation therapy,obviously to degenerate the cancer first and thereby render safer thesurgical procedure. To apply radiation properly it is necessary toemploy such an intensity of radiation that the periphery of the bonypelvis is struck with the same intensity as the region in the axis ofthe pelvis, , the cervix; otherwise the peripheral cancer cells arestimulated to increased proliferation. Such a radiation treatment al-ways causes a decided radiation sickness. During this period thepatient could not be safely subjected to the additional trauma and TREATMENT OF CANCE
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Keywords: ., bookcentury1900, bookdecade1920, booksubje, booksubjectobstetrics
