[Computerized tomography in the planning of radiotherapy of prostatic cancer]. / Kompiuternaia tomografiia v planirovanii luchevoi terapii raka predstatel'noi zhelezy.

The paper is devoted to the description of methods of topometric preparation of 73 prostatic cancer patients for gamma-and proton-beam irradiation using an x-ray simulator and a CT tomograph. Basing on the measurement of the prostate in 3 directions in patients with different stages of disease (T1-2-24, T3-29 and T4-20), a conclusion was made that a prostate size was not enough to determine a stage of disease though a tendency to an increase in prostate size corresponded to the growing T index. However, stages T1-2 and T4 could be determined for sure within a certain range of prostate size values.

[Initial experience with the use of the proton beam at the Institute of Theoretical and Experimental Physics to treat prostatic cancer]. / Pervyi opyt ispol'zovaniia protonnogo puchka Instituta teoreticheskoi i éksperimental'noi fiziki pri pake predstatel'noi zhelezy.

The proton beam of the 157 MeV synchrotron of the Institute of Theoretical and Experimental Physics was modified for irradiation of prostatic cancer patients. Patient's topometric preparation and method of transperineal irradiation were described. A method of radiotherapy with proton beam boost was applied to 17 patients with different clinical stages of disease. After 6-20 months of the follow-up all the patients have been alive without clinical signs of tumor. In most of the patients radiation reactions of the critical organs were regarded as mild ones. Chronic and long-term radiation injuries were not detected in the patients who lived over 1 year.

[Computerized tomography in planning radiation therapy of patients with nasopharyngeal squamous-cell cancer]. / Komp'iuternaia tomografiia v planirovanii luchevoi terapii u bol'nykh ploskokletochnym rakom nosoglotki.

In 27 patients with squamous cell nasopharyngeal cancer, the results of a routine x-ray study were correlated with those of computerized tomography. It has been shown that the resolution of computerized tomography is about twice as high in specified diagnosis of a disseminated tumor process, particularly in cases when the tumor involves the orbit, retrobulbar space, pterygopalatine fossa, uncinate processes, nasal cavity, etc. Besides, computerized tomography can de effectively used to correct irradiation conditions during radiation therapy and to evaluate therapeutic results.