. The Röntgen rays in medical work . , when once the condition isestablished, little compensation can be provided, and cardiac failureand arrest soon prove fatal. By the courtesy of the Medical Review we are enabled to presentthe original outlined illustration of the heart displacement (Fig. 162). Reported Action of X-Rays upon the Heart.—Mr. BezleyThorne* has made an interesting observation in relation to cardiac * British Medical Journal, vol. ii., p. 1238, 1896. MEDICAL AND SURGICAL APPLICATIONS 329 radiography. He noticed that the heart shrank visibly after thirtyminutes exposure to the Ro
. The Röntgen rays in medical work . , when once the condition isestablished, little compensation can be provided, and cardiac failureand arrest soon prove fatal. By the courtesy of the Medical Review we are enabled to presentthe original outlined illustration of the heart displacement (Fig. 162). Reported Action of X-Rays upon the Heart.—Mr. BezleyThorne* has made an interesting observation in relation to cardiac * British Medical Journal, vol. ii., p. 1238, 1896. MEDICAL AND SURGICAL APPLICATIONS 329 radiography. He noticed that the heart shrank visibly after thirtyminutes exposure to the Rontgen rays. In one case the lesseningamounted to no less than 2 inches in the long axis of the viscus, andlh inches in the short diameter. There may, of course, he somefallacy involved in this observation. For instance, it is known thatincreased exposure to the rays or an alteration of current in manycases means greater penetrability of any given substance. So thatthe appearance of a light zone round the heart towards the end of a. Fig. 162.— A. Chauffard. long exposure might mean that so much of the muscle had becomefully penetrated, or that the electrical conditions had changed. Ineither case the dark core would probably represent blood or densemuscular tissue, or both. Should, however, actual contraction be proved, it points topossibilities of importance. Without venturing too far afield inabstract speculations, it seems tolerably clear that, assuming suchcontraction, there might be direct tonic influence on heart muscle, 330 THE RONTGEN RAYS IN MEDICAL WORK while traumatic injury to deep organs from the Rontgen exposuresmight be connoted. In this connection it may be noted thatDr. H. Heincke found extensive pigmentation occurs in the cells ofthe splenic pulp of lower animals after the abdomen has beenexposed to the action of se-rays.* Atheroma of the Aorta. Atheromatous patches have been demonstrated in the aorta, andare usually seen better on the scre
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