[Accelerators in radiotherapy; analysis of the features of betatrons (author's transl)]. / Gli acceleratori in radioterapia. Analisi delle caratteristiche delle apparecchiature: betatroni

The physical, mechanical and dosimetric features of betatrons are described and discussed. Reference is also made to difficulties that may arise and the limitations associated with their employment as electron accelerators in radiotherapy.

[Vocal cords carcinoma. Results of radiotherapy (author's transl)]. / Il cancro delle corde vocali: risultati della radioterapia.

The results of larynx carcinoma radiotherapy with electron beams are reported: 67 cases of glottic carcinoma (vocal cords) Tis, T1a, T1b, T2, treated between 1965 and 1978 are studied. Survival cumulative and not evidence disease rates are reported 84.7% at three years, 80.2% at five years, 77.1% at ten years, 77.1% at fourteen years. To conclude we underline the importance of radiotherapy in the treatment of carcinoma of the vocal cords.

[Proposal for evaluating the psychological effects of exposure to non-ionizing radiation in the work environment]. / Proposta per la valutazione degli effetti psichici della esposizione a radiazioni non ionizzanti in ambiente di lavoro.

Because of the growing national and international spreading of devices producing non-ionizing radiations, the AA consider the possibility of a deep study on some of the most precious and interesting effects, though controversial at the same time, described in occupationally exposed subjects: the psychological ones. Such a study, however, presents considerable difficulties because of the great deal of personal, domestic and social factors responsible for the arising of such a symptomatology. Therefore the AA suggest the use of a set of tests particularly aiming at leaving out such factors in the genesis of the psychological troubles; this set must be previously administered to a carefully selected sample in order to verify its accuracy, reliability, sensitivity and specificity, so that it will be possible to extend afterwards the research to larger samples of population.

[Quantitative computerized tomography of the vertebral spongiosa. Proposal of a method applicable to the study of postmenopausal osteoporosis]. / Tomografia computerizzata quantitativa (TCQ) della spongiosa vertebrale. Proposta di una metodica applicabile allo studio dell'osteoporosi post-menopausale (PMO).

A Quantitative Computed Tomography (QCT) method, simplifying the well-known technique proposed by Genant (1982) and applied to a standard third generation whole body CT scanner is described. This technique was applied in the measurement of the trabecular bone which has high sensitivity for metabolic changes. The BMC (Bone Mineral Content) measured in different groups of subjects (healthy postmenopausal patients versus women with postmenopausal osteoporosis) showed a highly significant difference (p less than 0.001). The precision of repositioning (coefficient of variation 1.8% to 2.3%, obtained in healthy male patients) and the good, linear relationship computed from the phantom values, minimize measurement errors. Since this method is quickly applied and involves low-dose radiation-exposure, it could be introduced in the clinical study of metabolic bone diseases.

[Evaluation of various psychologic parameters in a group of workers occupationally exposed to radiofrequency]. / Valutazione di alcuni parametri psicologici su un gruppo di lavoratrici professionalmente esposte a radiofrequenze.

In this study effects on psyche caused by a protract exposure to radiofrequency are examined. 13 women, occupationally exposed to radiofrequency, were subjected to a series of psychological tests in order to verify possible psychological troubles. Results seem to demonstrate a significant presence of troubles concerning social relations, anxiety and depression.

[Various psychological parameters in subjects occupationally exposed to radiofrequencies]. / Indagine su alcuni parametri psicologici in soggetti professionalmente esposti a radiofrequenze.

Because of increasing interest for electromagnetic fields biological effects we examined possible effects on behaviour produced by prolonged exposition to radiofrequencies on some wood industry workers. The results of psychological tests seem to prove a significant difference between exposed and control groups in the answers concerning social relations and anxiety. However these results have to be confirmed by other and more complete studies.