[Studies on the use of electroradiography with selenium layers in irradiation planning (author's transl)].
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Biomedical subjects
Publications and source records attributed to G Reichel.
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A review is given on the most important neurologic sequelae after long lasting abuse of alcohol. The paper especially deals with the clinical features of neuropathic and myopathic disorders in alcoholics. Electromyography (including electroneurography) is considered to be a major diagnostic aid in these conditions.
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The variation in the speed of conduction of motor fibers of the ulnar nerve was determined by Hopf's double-stimulus method and compared with values obtained from the duration of muscular response potentials for differently spaced points of stimulation. However, the values obtained from the difference of the duration of response potentials are inadequate since the duration of potentials cannot always be determined accurately. After a ten-day administration of faustan (15 mg per day) or phenytoin (300 mg per day) there was observed a decrease especially in the minimum rate of conduction of motor fibers of the ulnar nerve.
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The authors show the methodological problems connected with the determination of distal latency and the possibility of misinterpretation. They recommend the use of concentric needle electrodes together with surface electrodes for the determination of the distal latency of the hand nerves and also to always register both nerves.
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In 1932 Kettle reported that the fibrogenic action of quartz particles is inhibited when they are coated with iron. Many authors subsequently confirmed this finding. Reif et al., who studied the effect of different iron-ore mine dusts, showed that, like aluminium hydroxide, iron hydroxide has a strong effect in inhibiting the fibrogenic action due to quartz. The findings of this paper, based on an X-ray survey of a group of 7735 iron ore miners, on autopsy examinations, tissue dust analysis and physiological examinations, confirm the view that FeO(OH) is a most powerful inhibiting substance.
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